Seoul DOOH Guide · 2026

DOOH Advertising in Seoul

AdQuick aggregates Seoul's 14,000+ digital screens -- Gangnam, Myeongdong, Hongdae, COEX, ICN and GMP airports, and the Subway -- into a single buy. CPMs KRW 4,500 programmatic to KRW 28,000+ on Gangnam and COEX K-Pop Square spectaculars; activate from KRW 1.5M, K-pop comeback and Chuseok takeovers in seven figures.

Programmatic open-exchange inventory is accessible through DSPs from test budgets of roughly ₩2,500,000–₩10,000,000 (USD $1,800–$7,000). KOBACO measurement, KCSC creative compliance, and Seoul Metro / KORAIL / Incheon Airport approvals — covered in one place.

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80,000+ Seoul DOOH screens
23-line subway · 700+ stations
KOBACO & KADD measurement
USD settlement available
80,000+
Digital screens
₩6K–₩90K+
CPM range
~₩2.5M
Programmatic minimum
7M+
Daily subway riders
Access all DOOH formats
Digital Billboards
Transit & Airport
Place-Based
Programmatic

DOOH Advertising in Seoul: Inventory, Costs & Programmatic Guide

Digital out of home advertising in Seoul covers an estimated 80,000+ digital screens across the Seoul Metropolitan Subway, ICN and GMP airports, the COEX K-POP Square Wave anamorphic LEDs, Gangnam and Myeongdong corridors, Yeouido, DDP, Lotte World Tower-adjacent screens, and 15,000+ apartment and office elevator LCD networks. Typical CPMs range from ₩6,000–₩15,000 for subway D6s and elevator LCDs to ₩35,000–₩90,000+ for premium COEX and Gangnam landmark LEDs.

Overview

What Is DOOH Advertising in Seoul?

Digital out of home (DOOH) is outdoor advertising delivered on digital screens — LED, LCD, and e-paper — rather than printed static posters. In Seoul, DOOH spans the Seoul Metropolitan Subway (~7 million daily passengers), Incheon International Airport (ICN), Gimpo International Airport (GMP), COEX K-POP Square's globally viral "Wave" anamorphic LED, Gangnam, Sinnonhyeon/Sinsa-dong, Myeongdong, Yeouido IFC and 63 Building, DDP, Lotte World Tower / Jamsil, Itaewon and Hannam-dong, premium malls (Lotte, Hyundai, Starfield COEX, IFC Mall, The Hyundai Seoul), 15,000+ apartment and office elevator LCDs, KTX/SRT stations (Seoul Station, Yongsan, Suseo), and place-based screens in cinemas, cafés, and taxis. Digital now accounts for an estimated 70%+ of total Seoul OOH ad spend, with double-digit annual growth driven by K-pop tourism, 3D anamorphic LED innovation, and cross-border programmatic via VIOOH and Nasmedia partnerships.
Inventory layers

The four layers of Seoul DOOH inventory

Seoul DOOH is defined by venue environment. Plans typically blend across these four layers to balance impact, frequency, and CPM efficiency.

Iconic Takeover

COEX K-POP Square Wave (d'strict), Gangnam Station and Sinnonhyeon LEDs, Myeongdong spectaculars, Yeouido 63 Building, DDP and Lotte World Tower-adjacent screens. SOV packages anchor flagship K-Wave campaigns.

Transit

Seoul Metropolitan Subway (23 lines, 700+ stations), in-train LCDs, station dominations, KTX/SRT high-speed rail at Seoul Station, Yongsan, and Suseo, plus ICN and GMP airport digital. The mass-commuter and traveller backbone.

Street-Level

JCDecaux Korea bus shelters, Kakao T and Tada taxi digital, Seoul-area pedestrian LEDs across Hongdae, Itaewon, Cheongdam-dong, Gwanghwamun. Hyperlocal pedestrian and rideshare reach with strong daypart flexibility.

Place-Based

15,000+ apartment-complex and Grade-A office elevator LCDs (Nasmedia and Mezzomedia), premium mall digital, CJ CGV / Lotte Cinema / Megabox screens, plus cafés, gyms, karaoke, and convenience stores. Captive dwell and frequency.

Seoul is one of the most visually dense DOOH markets in the world.
From 3D anamorphic landmark LEDs to apartment-elevator captive dwell, Seoul's mix is uniquely Korean — and increasingly programmatic.
80,000+
Digital OOH screens across the Seoul Metropolitan Area
70%+
Digital share of total Seoul OOH ad spend
15,000+
Buildings in the Nasmedia-led elevator LCD network
7M+
Daily Seoul Metropolitan Subway riders
Pricing data

How Much Does DOOH Advertising Cost in Seoul?

DOOH pricing in Seoul depends on venue type, format, daypart, campaign duration, and buying model. Four pricing models are in active use.

CPM

Cost per thousand impressions — increasingly dominant for programmatic DOOH (pDOOH) and cross-border programmatic buys. Range: ₩6,000–₩90,000+ depending on venue.

Share of Voice

SOV / weekly package — dominant for premium COEX, Gangnam, and Myeongdong landmark LED spectaculars, where slot share is the standard buying unit.

Loop Share (송출)

Per-play pricing used on apartment and office elevator LCD networks and some place-based screens; you pay per play insertion or per loop rotation.

Programmatic Guaranteed

PG — fixed impression count at a negotiated CPM, delivered via DSP against a reserved deal ID. Bridges direct buy certainty with programmatic delivery.

Indicative Seoul DOOH rates by format (2026)

Format Typical CPM (₩) Typical Minimum Buy Buying Model
Apartment elevator LCD (Nasmedia, Mezzomedia) ₩6,000–₩15,000 ₩3,500,000/week Loop share / programmatic
Grade-A office elevator LCD ₩10,000–₩22,000 ₩5,000,000/week Loop share / programmatic
Seoul subway platform D6 / digital poster ₩8,000–₩18,000 ₩4,000,000/week SOV / programmatic
Seoul subway station digital dominations ₩15,000–₩40,000 blended ₩15,000,000/week Direct / PG
Seoul subway in-train LCD ₩7,000–₩16,000 ₩4,000,000/week SOV / programmatic
ICN Incheon Airport digital (airside + landside) ₩30,000–₩80,000 ₩20,000,000/week Direct / PG
GMP Gimpo Airport digital ₩20,000–₩55,000 ₩10,000,000/week Direct / PG
KTX/SRT stations (Seoul Station, Yongsan, Suseo) ₩15,000–₩35,000 ₩8,000,000/week Direct / PG
Premium mall digital (Starfield COEX, Hyundai, Lotte, The Hyundai Seoul) ₩18,000–₩50,000 ₩7,000,000/week SOV / programmatic
COEX K-POP Square / Wave LED (d'strict) Quoted by slot share ₩30,000,000–₩120,000,000/week SOV packages
Gangnam Station / Sinsa / Sinnonhyeon LEDs Quoted by slot share ₩25,000,000–₩80,000,000/week SOV packages
Myeongdong landmark LEDs Quoted by slot share ₩20,000,000–₩70,000,000/week SOV packages
Yeouido IFC / 63 Building Quoted by slot share ₩15,000,000–₩60,000,000/week SOV packages
Bus shelter digital (Seoul city) ₩10,000–₩25,000 ₩5,000,000/week SOV / programmatic
Taxi digital (Kakao T, 타다 Tada) ₩7,000–₩18,000 ₩3,500,000/week Programmatic / direct
Programmatic open exchange (blended cross-border) ₩7,000–₩30,000 ~₩2,500,000 test Auction

Ranges reflect typical Seoul in-charge rates for commercial campaigns; agency-negotiated rates and programmatic auction clearing prices can run below these floors. Cross-border DSP pricing typically settles in USD with automatic KRW conversion. For live quotes tied to actual availability, pull pricing through the AdQuick marketplace.

Formats & venues

Seoul DOOH Format & Venue Breakdown

DOOH inventory in Seoul is defined by venue environment, not creative format. Below, the venue categories that matter and who owns them.

Venue Category Primary Media Owners Typical CPM (₩) Best For
Apartment elevator LCD Nasmedia (나스미디어) affiliated, Mezzomedia (메조미디어), Focus Media Korea (where applicable), local operators ₩6,000–₩15,000 Mass urban, family demo, captive dwell
Grade-A office elevator LCD Nasmedia, Cheil OOH, Mezzomedia ₩10,000–₩22,000 B2B, finance, tech decision-makers
Seoul subway (platform, in-train, tunnel) Seoul Metro Advertising (서울교통공사 광고), JCDecaux Korea (selected lines) ₩7,000–₩40,000 Mass commuter, 7M+ daily riders
ICN Incheon International Airport digital Incheon Airport Media, JCDecaux Korea ₩30,000–₩80,000 International travellers, luxury, Asian-hub transit
GMP Gimpo Airport digital Gimpo Airport Media, JCDecaux ₩20,000–₩55,000 Domestic business, short-haul Tokyo/Osaka/Beijing
KTX / SRT stations KORAIL Advertising, SR Advertising ₩15,000–₩35,000 Intercity business, Busan/Daejeon/Daegu corridor
Premium shopping (Starfield COEX, Lotte Department Store, Hyundai, The Hyundai Seoul, IFC Mall) Nasmedia, JCDecaux Korea, mall-specific concessionaires ₩18,000–₩50,000 Luxury, K-beauty, fashion, CPG
Landmark / full-motion LED (COEX K-POP Square, Gangnam, Myeongdong, Yeouido, DDP) d'strict (COEX Wave), Gangnam-area concessionaires, Myeongdong ops SOV packages K-Wave, tourism, global brand amplification
Bus shelter digital JCDecaux Korea, Seoul-area operators ₩10,000–₩25,000 Pedestrian, hyperlocal
Taxi digital (Kakao T, Tada) Kakao Mobility, Tada, T-Map Mobility ₩7,000–₩18,000 25–45 urban mobile reach, nightlife
Place-based (cafés, gyms, karaoke, convenience stores) Mezzomedia, Cheil OOH, local networks ₩10,000–₩22,000 Lifestyle, K-beauty, food & beverage
Cinema digital CJ CGV Media, Lotte Cinema, Megabox ₩18,000–₩40,000 Entertainment, younger audiences

Signature Seoul DOOH sites

COEX K-POP Square / "Wave" LED

The globally viral 3D anamorphic curved LED at COEX in Samseong-dong, designed and operated by d'strict — the template that made Seoul synonymous with 3D DOOH and a tourist destination in its own right.

Gangnam Station / GS Tower / Sinnonhyeon

Dense LED spectaculars anchoring Seoul's premium shopping and business district along the Gangnam–Sinnonhyeon corridor.

Myeongdong pedestrian district

K-beauty and tourism capital of Seoul; concentrated LED spectaculars on the Myeongdong shopping streets reach inbound Chinese, Japanese, and Southeast Asian visitors.

Yeouido IFC Mall / 63 Building

Seoul's financial-district LEDs overlooking the Han River — finance, broadcast, and National Assembly audience.

Dongdaemun Design Plaza (DDP)

Zaha Hadid-designed fashion and design hub with modern LED-first installations, anchoring Seoul Fashion Week and 24-hour shopping audiences.

Seoul Metro Line 2

The world's busiest subway loop line; concentration of D6, station dominations, and in-train digital across Gangnam, Hongik, Jamsil, and Seoul Station interchanges.

ICN Incheon International Airport T1 & T2

The global Asian hub, with T2 as the newer DOOH-dense terminal — international travellers, luxury, and Asian-hub transit audiences.

Lotte World Tower / Jamsil

123-storey landmark with adjacent LED spectaculars serving the Jamsil/Sincheon/Gangnam-southeast corridor — families, tourism, and luxury shoppers.

Nasmedia elevator network

Covers an estimated 15,000+ Seoul apartment and office buildings — Korea's largest captive-dwell elevator LCD category, with concentrations in Gangnam, Seocho, Songpa, Mapo, Yongsan, Nowon, and Bundang/Pangyo.

Seoul DOOH at a Glance (2026)

Metric 2026 Snapshot
Estimated digital OOH screens in Seoul Metropolitan Area 80,000+
Dominant media owners Nasmedia (나스미디어), JCDecaux Korea, Mezzomedia (메조미디어), Cheil Worldwide OOH, Innocean OOH, Seoul Metro Advertising, Incheon Airport Media, d'strict (COEX Wave)
Lowest self-serve programmatic entry ₩2,500,000–₩10,000,000 (USD $1,800–$7,000) via AdQuick, Vistar, VIOOH, Nasmedia
Typical CPM range ₩6,000 (subway/elevator) to ₩90,000+ (premium landmark)
Korean audience currency KOBACO (한국방송광고진흥공사), KADD (Korea ADvertising Data), mobile panel verification
Regulator KCSC (방송통신심의위원회 / Korea Communications Standards Commission), Korea Fair Trade Commission (KFTC) under the Act on Fair Labelling and Advertising
Subway / airport creative approval Seoul Metro Advertising (서울교통공사 광고), KORAIL Advertising, Incheon International Airport Corporation (IIAC), Gimpo Airport Media
Subway & elevator

Seoul Subway & Nasmedia Elevator: Formats, Specs & Reach

Two formats define Seoul DOOH at scale: the Seoul Metropolitan Subway network (23 lines, 700+ stations, ~7 million daily riders across Seoul Metro/KORAIL/9호선/Shinbundang) and the Nasmedia-led elevator LCD network — the Korean version of the captive-dwell elevator category. These are the planning workhorses for any serious Seoul campaign.

Seoul subway digital formats

Subway Format Dimensions / Resolution Typical Location Slot
Platform digital 6-sheet (D6) 1080×1920 portrait Platform walls, concourses 10–15 sec in 60-sec loop
Digital lightbox / pillar Various Station pillars, passageways 10 sec
Tunnel LED / train-window sequence Synchronised LED array Facing platforms at major stations 15–30 sec storytelling
In-train LCD 1920×1080 Carriage interiors, door tops 10–15 sec loop
Station Digital Domination Multiple synchronised screens Flagship stations (Gangnam, Hongik University, Jamsil, Seoul Station, Gangnam-gu Office, COEX/Samseong) Customised

Creative approval: Seoul subway creative is reviewed by Seoul Metro Advertising (서울교통공사 광고) under Seoul Metropolitan Government advertising policies. Allow 7–10 business days for clearance. Political, gambling, alcohol (partial), pharmaceutical, adult products, and cryptocurrency all carry tight restrictions.

Nasmedia apartment & office elevator network

Nasmedia (나스미디어, KOSDAQ-listed 089600.KQ, a KT Group subsidiary) operates one of Korea's largest elevator LCD networks alongside Mezzomedia and Cheil OOH-affiliated networks. Two subformats:

Apartment complex elevator LCD — screens in the elevator lobbies and inside elevators of gated apartment complexes across Gangnam, Seocho, Songpa, Mapo, Yongsan, Nowon, and Bundang/Pangyo (Gyeonggi extension); loop-share pricing, 15-second slots, deep frequency builds. Korea's apartment-living density makes this category uniquely high-reach.
Grade-A office elevator LCD — screens in the elevator lobbies of Grade-A office buildings in Gangnam Finance Center, Yeouido IFC, Euljiro, and Jamsil; concentrated on the urban white-collar decision-maker audience.

Nasmedia is accessible programmatically through select cross-border DSP deal IDs and PMPs, in addition to traditional direct buys and its own SSP/DSP offering.

KOBACO and KADD audience measurement: Reach and frequency on Seoul subway, elevator, and landmark inventory are reported through KOBACO (한국방송광고진흥공사 / Korea Broadcast Advertising Corporation) and KADD, combining passenger counts, mobile device panel verification, and Statistics Korea data.

Programmatic

Programmatic DOOH (pDOOH) in Seoul: How to Activate

Korea's programmatic DOOH market has expanded meaningfully with Nasmedia's SSP/DSP integration, VIOOH's Korean inventory expansion, and the growth of cross-border DSP access. Seoul is the largest programmatic DOOH market in Korea.

How pDOOH works in Seoul

A DSP sends bids into an SSP representing one or more media owners. When a play opportunity opens on a screen, the SSP runs an auction (or fulfils a reserved deal) and returns the winning creative to the ad server. Screen-level identifiers, venue taxonomy, and dayparting determine which auctions your campaign participates in. Cross-border campaigns typically settle in USD via a DSP's Korea-compliant billing path; domestic KRW buys transact through Korean agencies or direct DSP/SSP accounts.

Major DSPs buying Seoul DOOH inventory

AdQuick

DSP and marketplace — transacts programmatically across every major SSP (Vistar, Hivestack, Place Exchange, Broadsign Reach, VIOOH, Nasmedia) and aggregates direct inventory from every major Seoul media owner (Nasmedia, JCDecaux Korea, Mezzomedia, Seoul Metro Advertising, Incheon Airport Media, d'strict, Cheil OOH) in a single unified plan, with native KOBACO/KADD planning, creative delivery, and attribution.

Nasmedia

KT Group-owned; operates both a media network and its own SSP/DSP; primary domestic buying path for Korean advertisers.

Vistar Media

Largest pDOOH DSP globally; APAC coverage including Seoul via SSP partnerships.

VIOOH

JCDecaux-backed SSP with DSP functionality; primary path into JCDecaux Korea's subway, airport, and bus shelter inventory.

Broadsign Ads

Integrated with Broadsign Reach SSP and Broadsign's CMS footprint across APAC.

The Trade Desk (OpenPath DOOH)

DOOH as a channel within TTD's omnichannel buying; growing Korea access.

Yahoo DSP

Omnichannel DSP with DOOH inventory access for Korean cross-border campaigns.

Mezzomedia

Kakao Group affiliate; integrated media and SSP offering for Korean inventory.

StackAdapt DOOH

Omnichannel DSP with DOOH module; Korea supply via SSP integrations.

Major SSPs / networks with Seoul inventory

Nasmedia

Accessible via AdQuick, direct Nasmedia DSP/SSP, and select programmatic paths for apartment/office elevator, mall, and supplemental inventory.

VIOOH SSP

JCDecaux's SSP. Accessible via AdQuick, VIOOH (primary), Vistar for Seoul subway (selected lines), ICN/GMP airports, and bus shelters. The JCDecaux "Visit Korea" DOOH-plus-YouTube engagement case is the proof point.

Hivestack SSP

Strong APAC footprint; accessible Seoul inventory via deal IDs across Korean media owner partners.

Place Exchange

Integrated into The Trade Desk, Yahoo DSP, and other omnichannel DSPs for DOOH line items reaching Seoul inventory.

Broadsign Reach

Broadsign's SSP with APAC DOOH supply, including Korean media-owner partners on the Broadsign CMS footprint.

Mezzomedia

Kakao Group affiliate SSP path; strong in place-based and elevator. Accessible via AdQuick and direct.

Other Seoul programmatic paths

Seoul Metro Advertising — accessible via AdQuick, Nasmedia, and direct PMPs for Seoul subway supplemental inventory.
d'strict (COEX Wave) — typically direct buy; programmatic takeovers are bespoke PG deals.
Incheon Airport Media, Kakao Mobility (taxi), CJ CGV Media — enabled through AdQuick, Vistar, and Korean SSPs.
Moving Walls — APAC-focused DSP/measurement platform with Seoul supply paths and the most-used third-party attention layer for cross-border buyers.

Targeting capabilities for Seoul pDOOH

Venue targeting — buy only subway, airport, apartment elevator, office elevator, mall, or landmark using IAB OOH venue taxonomy.
Geofence / district / apartment complex — fence to Gangnam-gu, Seocho-gu, Songpa-gu, Mapo-gu, Yongsan-gu, Jongno-gu, or specific named apartment complexes and commercial areas.
Daypart — commute windows, lunch peaks, weekends, K-pop concert and event windows.
Contextual triggers — weather (rain, fine-dust PM2.5 index, temperature), flight delays at ICN/GMP, Korean sports (KBO baseball, K League football, Korean basketball, esports tournaments), Coupang/Naver Shopping/Kakao retail cycles, K-pop release windows (new MV drops, concert dates).
Mobile audience extension — Nasmedia + KT mobile panels, Naver behavioural segments, Kakao Mobility segments, Mezzomedia audience data (where consented under PIPA).
Dynamic creative optimisation (DCO) — creative variations served by location, weather, fine-dust AQI, time, or audience segment; Korean-language creative is the default with English/Chinese/Japanese for international audiences at ICN and Myeongdong.

Programmatic Deal Types in Seoul

Deal Type How It Works Typical Use
Open exchange Auction-based buying against any qualifying inventory at the floor CPM. Lowest CPM; growing share of Korean DOOH.
Private marketplace (PMP) Invite-only deal with preferred floor and premium inventory. The most common programmatic path for Korean brand campaigns.
Programmatic Guaranteed (PG) Fixed impression count, fixed CPM, reserved inventory. Bridges direct buy certainty with programmatic delivery.
Measurement

Measuring DOOH in Seoul: KOBACO, KADD, Lift & Attribution

Korean DOOH measurement consolidates around KOBACO and the newer KADD standards, with mobile panel verification playing a central role given Korea's ~100% smartphone penetration.

1. KOBACO and KADD (the Korean audience standards)

KOBACO (한국방송광고진흥공사 / Korea Broadcast Advertising Corporation) — the state-affiliated broadcast and OOH advertising authority; produces traffic, passenger, and audience panels used for OOH impression modelling.
KADD (Korea ADvertising Data) — emerging DOOH-specific standard combining KOBACO panels with mobile device data and venue impression modelling.
Mobile panel verification — given Korea's 99%+ smartphone penetration and dense mobile panel coverage (KT, SKT, LG U+), audience extension and foot-traffic verification are highly accurate by global comparison.
Moving Walls — third-party measurement layer used by cross-border programmatic buyers for attention and attribution on Seoul inventory.

2. Verification & attribution partners

Moving Walls — attention measurement, impression verification, attribution across APAC/Korea.
Adelaide AU — attention measurement; AU scores for creative and placement quality.
Nielsen Korea / Kantar Korea — brand lift studies (awareness, consideration, intent).
Kakao Mobility / T-Map / Naver Maps — mobile-based foot-traffic and location verification.
Coupang / Naver Shopping / Kakao lift studies — e-commerce sales lift, coupon redemption, Kakao mini-app engagement.
Branded search lift — correlates DOOH exposure with incremental Naver and Google Korea branded search volume.

3. Core Seoul DOOH KPIs

Impressions, reach, frequency, Share of Voice (SOV), CPM, CPV, store visits, Naver/Kakao branded search lift, Coupang/Naver Shopping traffic lift, Kakao mini-app engagement, and conversion lift where first-party data is available.

DIGITAL SHARE OF SEOUL OOH SPEND70%+
SEOUL METROPOLITAN AREA SCREENS80,000+
KOREA SMARTPHONE PENETRATION99%+
DAILY SUBWAY RIDERSHIP7M+
NASMEDIA ELEVATOR BUILDING REACH15,000+
PROGRAMMATIC ENTRY CPM₩7K–₩30K
Creative specs

Seoul DOOH Creative Specs & Best Practices

Most Seoul DOOH uses standard digital specs, with longer 15-second creative durations and bilingual considerations distinct to the Korean market.

Standard creative specs

Format Resolution Aspect Duration File
Subway platform D6 / portrait mall / elevator LCD 1080×1920 9:16 10–15 sec MP4, JPG, PNG
Subway in-train + lightbox landscape 1920×1080 16:9 10–15 sec MP4, JPG, PNG
Airport / large-format mall 1920×1080 or custom 16:9 10–20 sec MP4, JPG, PNG
COEX Wave / 3D anamorphic LEDs Custom (3D workflow) Curved / bespoke Typically 15 sec MP4 + 3D-aware brief
Gangnam / Myeongdong / Yeouido landmark LEDs Custom (building-specific) Varies Varies Owner-specified

Best practices

Motion is widely supported on subway, elevator, mall, and landmark DOOH; expressway and roadside digital is subject to stricter static/animation limits under Korean traffic-safety rules.
Audio — rarely supported; exceptions include cinema, some in-train units, and select landmark installations.
Korean-language creative (한국어) — expected for domestic audiences; bilingual Korean/English/Chinese/Japanese is standard for ICN airport, Myeongdong, Itaewon, and Gangnam targeting international travellers.
Text sizing rule of thumb — Korean Hangul (한글) text should be ≥ 1/8 of the shortest screen dimension; English/Chinese/Japanese text ≥ 1/10.
Safe zones — 5–10% margin from each edge; avoid the bottom 15% of subway D6s (sightline obstruction).
Creative duration — 15 seconds is the Korean standard (vs. 10 seconds in Western markets).
3D anamorphic creative (COEX Wave-style) — requires a bespoke 3D brief from the screen operator (d'strict for COEX); creative is rendered for the exact screen curvature and viewing angle. Allow 4–6 weeks of production and 2–3 weeks of approval.
Dynamic triggers — supported via DCO; in Seoul specifically, fine-dust (미세먼지 PM2.5) triggered creative for health, air-purifier, and outdoor brands is an established tactic; K-pop concert and MV-release-day triggers are common for music, beauty, and entertainment campaigns.
File weight — 10–25 MB per asset; H.264 is the dominant codec.

Seoul creative approval bodies

Seoul Metro Advertising (서울교통공사 광고) — Seoul subway creative review; 7–10 business days. Strict on political, gambling, alcohol, adult products, and cryptocurrency.
KORAIL Advertising — KTX and national rail; separate clearance, 7–10 business days.
Incheon International Airport Corporation (IIAC) — ICN creative review; 10 business days.
Gimpo Airport Media — GMP creative review; 7–10 business days.
d'strict / COEX Wave — bespoke approval for 3D anamorphic creative; typically 2–3 weeks including 3D rendering review.
Building-specific landmark concessionaires — Gangnam, Myeongdong, Yeouido, Jamsil landmarks have bespoke processes, typically 10 business days.

KCSC and Korean advertising compliance

All Korean advertising, including DOOH, is subject to the KCSC (방송통신심의위원회 / Korea Communications Standards Commission) and the Korea Fair Trade Commission (KFTC) under the Act on Fair Labelling and Advertising (표시·광고의 공정화에 관한 법률). Categories with extra scrutiny in Seoul:

Cryptocurrency and virtual assets — heavily restricted since the 2021 Virtual Asset User Protection framework and subsequent FSC guidance; celebrity endorsements especially scrutinised.
Gambling — public gambling (Kangwon Land casino, sports betting via Sports Toto) permitted; private gambling banned; online gambling advertising banned.
Alcohol — permitted with conditions; banned on subway surfaces during certain hours; drinking-age (19+) advisories required.
Tobacco — banned across all OOH including DOOH.
Pharmaceutical / medical devices — MFDS (Ministry of Food and Drug Safety) review required; prescription drug advertising restricted.
Education (hagwon 학원) advertising — KFTC has increased scrutiny on "#1 academy" and superlative claims.
K-beauty and cosmetics — require evidence-based claims; before/after imagery regulated.
Political content — National Election Commission rules apply during election periods; generally off-limits for commercial DOOH.
Food / functional foods — MFDS-approved claims only for functional foods (건강기능식품).
Vendor landscape

Seoul DOOH Vendor Landscape

Korea's DOOH ecosystem is concentrated among a handful of dominant operators across elevator, transit, airport, landmark, and place-based environments.

Media owners & network operators

Nasmedia (나스미디어)

Apartment + Grade-A office elevator LCD; dominant Korean DOOH network as a KT Group subsidiary. Korea's largest captive-dwell elevator category.

Elevator · Place-Based · KT Group

Mezzomedia (메조미디어)

Elevator, place-based, and digital DOOH as a Kakao Group affiliate; strong in lifestyle and apartment supplemental supply.

Place-Based · Elevator · Kakao Group

JCDecaux Korea

Seoul subway (selected lines), ICN Incheon Airport, and bus shelters across the city. Primary VIOOH-enabled programmatic supplier in Korea.

Transit · Airport · Street Furniture

Seoul Metro Advertising (서울교통공사 광고)

Seoul Metropolitan Subway digital master operator for most city-run lines, including platform D6, in-train, lightbox, and station digital domination inventory.

Subway · Transit

KORAIL Advertising

KTX and national rail digital inventory across Seoul Station, Yongsan, and Suseo, plus the wider intercity Busan/Daejeon/Daegu corridor.

Rail · Intercity

Incheon Airport Media / IIAC

ICN Incheon Airport digital estate covering airside and landside, T1 and T2 — international travellers, luxury, and Asian-hub transit reach.

Airport

Gimpo Airport Media

GMP Gimpo Airport digital, focused on domestic business and short-haul Tokyo / Osaka / Beijing routes.

Airport · Domestic

d'strict (디스트릭트)

COEX K-POP Square "Wave" anamorphic LED design, build, and concession. The studio behind the global 3D DOOH template.

3D Anamorphic LED · Landmark

Cheil Worldwide OOH / Innocean OOH

Samsung-affiliated and Hyundai-affiliated OOH operations, with major Seoul inventory across place-based, premium mall, and Grade-A office environments.

Place-Based · Mall · OOH Group

Kakao Mobility

Kakao T taxi digital screens — 25–45 urban mobile reach with rideshare and nightlife strength across central Seoul districts.

Rideshare · Taxi

CJ CGV Media, Lotte Cinema, Megabox

Cinema digital networks across Seoul and the wider metropolitan area, with younger audiences and entertainment context for film, beauty, and CPG brands.

Cinema

Local landmark concessionaires

Gangnam GS Tower, Myeongdong shopping district, Yeouido 63 Building, DDP, and Lotte World Tower-area screens — bespoke processes, SOV-package buying.

Landmark · Concession

DSPs Actively Buying Seoul Inventory

AdQuick, Nasmedia, Vistar Media, VIOOH, Broadsign Ads, Mezzomedia, Moving Walls, The Trade Desk (OpenPath DOOH), Yahoo DSP, StackAdapt DOOH.

AdQuick — The DSP and Marketplace for Seoul DOOH

AdQuick is a DSP and marketplace that transacts programmatically across every major SSP (Vistar, Hivestack, Place Exchange, Broadsign Reach, VIOOH, Nasmedia) and aggregates direct media-owner inventory from Nasmedia, JCDecaux Korea, Mezzomedia, Seoul Metro Advertising, KORAIL Advertising, Incheon Airport Media, d'strict (COEX Wave), Cheil OOH, and Kakao Mobility into a single unified plan — with native mapping, creative delivery, KOBACO/KADD audience planning, mobile audience extension, and foot-traffic attribution. That means one platform to plan, buy, measure, and report across the full Seoul DOOH landscape — rather than running parallel DSP seats and parallel owner RFPs, navigating Korean-language paperwork, and managing cross-border billing in multiple currencies.

Districts & audiences

Best DOOH Districts & Audiences in Seoul

Seoul's DOOH map is district-driven. Each gu and corridor anchors a distinct audience, format mix, and signature inventory.

Gangnam / Gangnam Station (강남역)

Audience: Finance, business, luxury shoppers, K-beauty, 25–45 professionals, tourists.

Signature formats: GS Tower LEDs, Gangnam Station dominations, Grade-A office elevator.

Samseong-dong / COEX (삼성동/코엑스)

Audience: Business travellers, international visitors, global brand audiences.

Signature formats: COEX K-POP Square Wave (d'strict), Starfield COEX mall, Grade-A office.

Seocho-gu / Sinsa / Apgujeong (서초구/신사/압구정)

Audience: Luxury shoppers, celebrity-spotting, K-fashion, 25–40 affluent.

Signature formats: Dosan Park-adjacent LEDs, Rodeo Street, luxury mall digital.

Myeongdong (명동)

Audience: Inbound tourism (Chinese, Japanese, SE Asian), K-beauty shoppers.

Signature formats: Myeongdong LED spectaculars, department-store digital.

Hongik University / Hongdae (홍대)

Audience: Gen Z, students, K-pop fans, nightlife, indie culture.

Signature formats: Hongik Station dominations, street-level LEDs.

Itaewon / Hannam-dong (이태원/한남동)

Audience: Expats, diplomats, hospitality, luxury residential.

Signature formats: Bus shelter, mall, hotel lobby LCD.

Yeouido / 63 Building (여의도/63빌딩)

Audience: Finance, National Assembly, KBS/MBC broadcast HQ, 30–55 professionals.

Signature formats: IFC Mall, 63 Building, Grade-A office elevator.

Jamsil / Songpa / Lotte World Tower (잠실/송파/롯데월드타워)

Audience: Families, tourism, luxury shoppers, Gangnam-southeast residential.

Signature formats: Lotte World Tower-adjacent LEDs, mall digital, subway Line 2.

Dongdaemun / DDP (동대문/DDP)

Audience: Fashion wholesale, tourism, 24-hour shopping, design.

Signature formats: DDP LED installations, shopping mall digital.

Jongno / Gwanghwamun / Insa-dong (종로/광화문/인사동)

Audience: Government, tourism, traditional culture.

Signature formats: Cheonggyecheon-adjacent, Gwanghwamun Square, historic-district digital.

Mapo / Seoul Station / Yongsan

Audience: KTX travellers, commuters, hotel district.

Signature formats: Seoul Station LEDs, subway interchange, hotel lobby.

Pangyo / Bundang (판교/분당 — Gyeonggi)

Audience: Tech (Kakao, Naver, SK Telecom), IT workers, 25–40.

Signature formats: Office elevator, Pangyo Techno Valley roadside.

ICN Incheon International Airport

Audience: International travellers, luxury, transit hub.

Signature formats: T1/T2 digital walls, international arrivals/departures.
Compliance

Regulatory & Privacy Considerations for Seoul DOOH

Korean DOOH advertisers navigate a layered compliance stack covering broadcast standards, fair-labelling rules, transit and airport approvals, sector-specific restrictions, PIPA, and Seoul municipal sign ordinances.

KCSC / KFTC compliance

The KCSC reviews broadcast and online advertising; KFTC enforces the Act on Fair Labelling and Advertising; superlative and misleading claims carry corrective orders and fines.

Subway, KTX, and airport creative approval

Seoul Metro Advertising — 7–10 days.
KORAIL Advertising — 7–10 days.
IIAC for ICN — 10 days.
Gimpo Airport — 7–10 days.

Category restrictions

Cryptocurrency and virtual assets — tightly restricted; celebrity endorsement scrutinised; FSC and Virtual Asset User Protection Act apply.
Gambling — online gambling advertising banned; sports betting via Sports Toto only permitted in approved channels.
Alcohol — 19+ advisories required; subway surface restrictions during daytime hours; Fair Trade Commission and Korea Alcohol and Liquor Industry Association codes apply.
Tobacco — banned across all Korean OOH.
K-beauty and cosmetics — Ministry of Food and Drug Safety (MFDS) regulates claims; before/after imagery requires substantiation.
Health / functional foods (건강기능식품) — only MFDS-approved functional claims permitted.

Personal Information Protection Act (PIPA)

Korea's data protection law (개인정보보호법). DOOH screens themselves do not collect personal data; mobile audience extension tactics using device IDs fall under PIPA — ensure your DSP and data vendor operate with explicit consent signals. Korea's PIPA is among the strictest globally.

Location and municipal sign rules

Location-Based Services Act — governs location data collection and use.
Municipal sign ordinances — Seoul Metropolitan Government Outdoor Advertising Ordinance (옥외광고물 조례) and district (gu) sign regulations restrict size, brightness, and placement of landmark digital; heritage and green-belt zones (around Bukchon, Insa-dong, and the Blue House area) have additional limits.
Bilingual / multilingual signage — Korean (primary, Hangul) with optional English/Chinese/Japanese; increasingly standard at ICN/GMP and Myeongdong tourist zones.
Political content — National Election Commission (선거관리위원회) rules apply during election periods; generally off-limits for commercial DOOH.
Budget examples

Seoul DOOH Budget Examples

Three reference tiers from a cross-border programmatic test through a flagship K-Wave activation, with line-item breakdowns.

Tier 1: Test / Korea-entry
₩2.5M–₩10M

Single DSP, Gangnam/Seocho geofence, 2-week flight, KOBACO-benchmarked reporting and bilingual creative. Approx. USD $1,800–$7,000.

DSP: Single seat via AdQuick or Vistar with cross-border billing.
Geo: Gangnam / Seocho geofence.
Inventory: Apartment elevator LCD + Seoul subway Line 2 platform D6.
Flight: 2 weeks, 2 dayparts (AM + PM commute).
Measurement: KOBACO/KADD-benchmarked impressions, mobile lift pixel for directional attribution.
Creative: Bilingual EN / 한국어.
Tier 2: Mid-market multi-venue
₩40M–₩150M

Multi-venue programmatic with weather and fine-dust DCO, audience extension, and a foot-traffic lift study. Approx. USD $28,000–$105,000.

Programmatic PMP: Seoul subway, Nasmedia elevator, premium malls, Kakao T taxi.
Direct PMP: JCDecaux Korea and Mezzomedia.
DCO: Fine-dust (PM2.5) and weather-triggered creative (3–4 variants).
Audience extension: Nasmedia + KT panels, Kakao segments.
Lift study: Foot-traffic via Moving Walls or Kakao Mobility.
Flight: 4 weeks.
Compliance: KCSC pre-clearance for regulated categories.
Tier 3: Flagship K-Wave / Korea-entry
₩500M+/quarter

Direct SOV across the COEX Wave, Gangnam, Myeongdong, Yeouido, ICN, and Line 2 with rolling programmatic PMP and brand lift. Approx. USD $350,000+/quarter.

Landmark SOV: COEX K-POP Square Wave (d'strict) + Gangnam Station + Myeongdong LEDs + Yeouido 63 Building.
Airport: ICN airport premium digital takeover.
Transit: Seoul subway Line 2 domination + KTX Seoul Station.
National PMP: Rolling programmatic across Seoul, Busan, Daegu, Incheon.
3D production: Anamorphic creative production for COEX Wave.
Brand lift: Kantar Korea or Nielsen Korea brand lift study.
Tentpole DCO: K-pop / drama release-day triggers for music, K-beauty, or streaming brands.
Reporting: Dedicated bilingual attribution dashboard.
How to buy

How to Buy DOOH Advertising in Seoul

Three viable buying paths, depending on budget, scale, cross-border complexity, and comfort with Korean media operations.

01

Direct with a Korean media owner or agency

Contact Nasmedia, JCDecaux Korea, Mezzomedia, Seoul Metro Advertising, KORAIL Advertising, Incheon Airport Media, d'strict (for COEX Wave), Cheil Worldwide OOH, Innocean OOH, or a Korean agency directly. Best for flagship, landmark, and large-budget direct buys (COEX Wave 3D takeovers, Gangnam Station dominations, ICN airport premium walls, Nasmedia Tier-1 elevator packages). Downsides: parallel RFPs in Korean, KRW invoicing and typically a Korean billing entity, Korean-language creative approval paperwork, and slow plan stitching across owners — particularly challenging for international brands without a Korean entity or local agency of record.

02

Programmatic via a DSP

Activate through any of the DSPs buying Seoul inventory: AdQuick, Vistar Media, The Trade Desk, StackAdapt, VIOOH, Broadsign Ads, Mezzomedia, Nasmedia, Yahoo DSP, or Moving Walls. Best for impression-based, flexible, and data-targeted campaigns from roughly ₩2,500,000 (USD $1,800) test budgets upward. Cross-border advertisers can typically settle in USD with automatic KRW conversion. Downsides if picking a single non-unified DSP: some DSPs have limited Nasmedia, Mezzomedia, or Seoul Metro access, so you won't see every Seoul SSP's supply from one seat.

03

Through AdQuick: the unified DSP + marketplace approach

AdQuick is a DSP and marketplace — it transacts programmatically across every major SSP (Vistar, Hivestack, Place Exchange, Broadsign Reach, VIOOH, Nasmedia) and aggregates direct inventory from every major Seoul media owner (Nasmedia, JCDecaux Korea, Mezzomedia, Seoul Metro Advertising, KORAIL Advertising, Incheon Airport Media, d'strict, Cheil OOH, Kakao Mobility) in a single unified plan, with KOBACO/KADD audience data, creative delivery, bilingual creative approval workflows, mobile audience extension, and foot-traffic attribution all native — plus USD settlement for cross-border advertisers. The fastest path for any international buyer entering Korea without a domestic entity, or any domestic buyer who wants full-market access without running parallel DSP seats and owner RFPs.

FAQ

Seoul DOOH Frequently Asked Questions

Quick answers on screens, costs, programmatic, measurement, minimum budgets, buying paths, creative specs, and K-Wave strategy.

DOOH advertising in Seoul is outdoor advertising shown on digital screens across the city — the Seoul Metropolitan Subway (23 lines, 700+ stations), Incheon International Airport (ICN), Gimpo International Airport (GMP), the iconic COEX K-POP Square "Wave" anamorphic LED, Gangnam Station and Myeongdong pedestrian LED spectaculars, Yeouido IFC and 63 Building LEDs, Dongdaemun DDP and Lotte World Tower areas, premium malls like Starfield COEX, Hyundai, Lotte, and The Hyundai Seoul, 15,000+ apartment-complex and office-building elevator LCD networks, and place-based screens in cafés, gyms, taxis, and cinemas. Seoul has an estimated 80,000+ digital OOH screens operated by Nasmedia, JCDecaux Korea, Mezzomedia, Seoul Metro Advertising, Incheon Airport Media, d'strict, Cheil OOH, and Innocean OOH. Most premium inventory is bookable programmatically through DSPs including AdQuick, Nasmedia, Vistar Media, and VIOOH.
Seoul DOOH CPMs typically range from ₩6,000–₩15,000 for apartment elevator LCDs and ₩8,000–₩18,000 for Seoul subway platform D6s, to ₩30,000–₩80,000 for premium ICN Incheon Airport digital and tens of millions of won per week as a share-of-voice package on COEX K-POP Square Wave, Gangnam Station, and Myeongdong landmark LEDs. Programmatic open-exchange inventory is accessible from around ₩7,000–₩30,000 CPM. Self-serve test campaigns start at roughly ₩2,500,000–₩10,000,000 (USD $1,800–$7,000), mid-market multi-venue flights run ₩40M–₩150M (USD $28K–$105K), and flagship K-Wave buys start at ₩500M+/quarter. Pricing varies by venue, daypart, buying model (CPM, SOV, loop share, or PG), and campaign duration.
The Seoul Metropolitan Area has an estimated 80,000+ digital out of home screens across the Seoul Metropolitan Subway, ICN and GMP airports, KTX/SRT stations, premium landmark LEDs (COEX, Gangnam, Myeongdong, Yeouido, DDP, Lotte World Tower), apartment and Grade-A office elevator LCD networks (the Nasmedia-led category alone covers an estimated 15,000+ Seoul buildings), bus shelters, taxis, and place-based venues. Nasmedia operates Korea's largest elevator network; JCDecaux Korea runs selected subway lines, ICN, and bus shelters; Seoul Metro Advertising is the subway master operator for most city-run lines; d'strict designs and operates the COEX Wave; Mezzomedia, Cheil OOH, and Innocean OOH complete the place-based and premium mall supply.
Programmatic DOOH in Seoul is the automated, impression-based buying of digital outdoor advertising through a DSP such as AdQuick, Nasmedia, Vistar Media, or VIOOH. Every major Seoul media owner — Nasmedia, JCDecaux Korea, Mezzomedia, Seoul Metro Advertising, Incheon Airport Media — has enabled programmatic paths via SSPs including Nasmedia, VIOOH, Hivestack SSP, Broadsign Reach, and Place Exchange. Buyers can target by venue, district (gu), apartment complex, daypart, and contextual triggers (weather, fine-dust PM2.5 index, flight status, K-pop release windows, sports) with cross-border minimums as low as ₩2,500,000 (USD $1,800). JCDecaux's "Visit Korea" DOOH + YouTube engagement case is a proof point for data-driven Seoul DOOH activation.
Traditional OOH in Seoul is printed, paper-and-paste advertising posted for set periods (typically four weeks) on a flat rate. DOOH is delivered on digital screens and priced on impressions (CPM), share of voice (SOV), loop share (송출), or programmatic guaranteed (PG), with creative that can change by daypart, weather, fine-dust AQI, flight status, K-pop release moments, or e-commerce cycle. DOOH enables dynamic creative, real-time triggers, tighter geofencing, and KOBACO/KADD impression reporting — all without print production delays. In Seoul specifically, digital now represents roughly 70%+ of total OOH spend, with 3D anamorphic LEDs (the COEX Wave template) and high-density apartment elevator LCDs being distinctively Korean DOOH formats with limited Western equivalents.
Korean DOOH is measured through KOBACO (the Korea Broadcast Advertising Corporation), KADD (Korea ADvertising Data), and mobile panel verification, combining passenger/pedestrian counts, Statistics Korea data, KT/SKT/LG U+ mobile location panels, and venue-level impression models to report weekly circulation, reach, frequency, and impressions. Moving Walls is the most-used third-party attention and attribution layer for cross-border programmatic buyers. Attribution for Seoul campaigns can combine mobile foot-traffic lift (Kakao Mobility, T-Map, Naver Maps), Naver/Kakao branded search lift, Coupang/Naver Shopping sales lift, and brand lift studies (Kantar Korea, Nielsen Korea). KOBACO/KADD are the Korean equivalents of the UK's Route and US's Geopath.
Self-serve programmatic DOOH on cross-border platforms like AdQuick or Vistar Media can be activated with test budgets from around ₩2,500,000–₩10,000,000 (USD $1,800–$7,000) in Seoul. Managed-service campaigns with a Korean agency typically start at ₩30,000,000+ (USD $21,000+). Premium direct buys on the COEX K-POP Square Wave, Gangnam Station, or Myeongdong LED spectaculars start at tens of millions of won per week as share-of-voice packages, and ICN/GMP airport premium takeovers typically start at ₩20,000,000+/week.
There are three buying paths. Path 1: direct with a Korean media owner or agency (Nasmedia, JCDecaux Korea, Mezzomedia, Seoul Metro Advertising, KORAIL Advertising, Incheon Airport Media, d'strict for COEX Wave, Cheil Worldwide OOH, Innocean OOH) — best for flagship direct buys but typically requires Korean capability and often a domestic agency of record. Path 2: programmatic via a DSP — AdQuick, Nasmedia, Vistar Media, VIOOH, Broadsign Ads, Mezzomedia, The Trade Desk, Yahoo DSP, Moving Walls, or StackAdapt DOOH — best for impression-based, data-targeted campaigns from ~₩2,500,000. Path 3: through AdQuick, the unified DSP and marketplace approach that transacts across every major SSP and aggregates direct media-owner inventory into a single plan with KOBACO/KADD planning, bilingual creative workflows, USD settlement for cross-border advertisers, and attribution built in.
Most Seoul DOOH uses standard specs: 1080×1920 (9:16 portrait) for subway platform D6s, apartment/office elevator LCDs, and mall verticals; 1920×1080 (16:9 landscape) for in-train, airport, and large-format screens; and custom resolutions for the COEX Wave and landmark LEDs. Typical creative duration is 15 seconds in a 60-second loop — longer than the 10-second Western standard. MP4 (H.264) is the dominant codec; JPG and PNG are universally supported. Audio is rarely permitted. Korean (Hangul) is the default creative language; bilingual Korean/English/Chinese/Japanese is standard for ICN, Myeongdong, and Gangnam tourist venues. 3D anamorphic creative for the COEX Wave requires a bespoke production brief from d'strict and 4–6 weeks of lead time.
K-Wave-anchored Seoul DOOH strategies pair COEX K-POP Square Wave or Gangnam LED takeovers with programmatic PMP windows triggered by release events. For a K-pop group comeback or new MV, that's COEX Wave fan-gathering + Gangnam Station + Myeongdong + Hongik University LEDs + MV-release-day-triggered DCO, timed to the 6 PM KST release window. For Seoul Fashion Week (March/October), DDP Dongdaemun + Cheongdam-dong + Gangnam Station + The Hyundai Seoul with DCO tied to show schedules. For K-beauty and tourism-season campaigns, Myeongdong + ICN Airport + COEX with bilingual Korean/Chinese/Japanese/English creative. For KBO baseball and K League football finals, stadium-adjacent LEDs + Gangnam + score-triggered DCO. Build in 6–8 weeks of lead time and plan for Seoul Metro, IIAC, KCSC, and d'strict creative approvals.

Start Your Seoul DOOH Campaign

AdQuick is the DOOH DSP and marketplace that unifies programmatic buying across every major SSP (Vistar, Hivestack, Place Exchange, Broadsign Reach, VIOOH, Nasmedia) with direct media-owner inventory across Seoul — including Nasmedia's apartment and office elevator network, JCDecaux Korea's subway, ICN, and bus shelters, Mezzomedia's place-based and digital inventory, Seoul Metro Advertising's subway digital estate, KORAIL Advertising's KTX stations, Incheon Airport Media's ICN estate, d'strict's COEX K-POP Square Wave 3D anamorphic LED, Cheil Worldwide OOH, Innocean OOH, Kakao Mobility's Kakao T taxi network, and local Gangnam, Myeongdong, Yeouido, and Jamsil landmark LED concessionaires.

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