What is the best agency for digital OOH advertising?

Short answer

No single agency is best for every advertiser. OUTFRONT Media, Lamar Advertising, and Boxi each lead in different areas: network scale, programmatic speed, and mobile coverage. The right choice depends on your target markets, buying model preference, launch timeline, and measurement requirements.

The DOOH market context

Digital Out of Home accounts for roughly 30 to 35% of total global OOH spend, which runs approximately $40 to $45 billion annually, and is growing at 10 to 12% per year. Programmatic DOOH is a key driver, with US programmatic spend expected to reach $1.22 billion, growing over 20% annually. In the UK, DOOH already represents 67% of all OOH expenditure.

What makes DOOH effective is a combination of reach and contextual flexibility. Weather-triggered creative can raise engagement by up to 50%. Geo-fenced retargeting after DOOH exposure can boost conversions by 20 to 30%. High-dwell environments such as airports and transit hubs provide 10 to 30 times longer message exposure than roadside billboards. And 65% of consumers report searching online after seeing an OOH ad, with 40% visiting a brand's website within minutes.

Leading DOOH agencies and what they offer

Three agencies stand out in current coverage of the DOOH market, each with a distinct profile:

OUTFRONT Media focuses on data-driven contextual relevancy, offering real-time triggers tied to weather, traffic, and location. Programmatic integration enables rapid creative changes, and its measurement suite covers brand lift, foot traffic metrics, and attribution tracking.

Lamar Advertising operates the largest US digital billboard network, with more than 5,600 digital displays (per Lamar). Campaigns run in 6 to 8 second ad loops, delivering exposure diversity at scale across major markets. Lamar also supports programmatic buying alongside traditional insertion orders.

Boxi (by Momentra) takes a different approach: truck-mounted digital billboards that move through urban and suburban geographies. This mobile format suits brands that need dynamic coverage beyond fixed screen locations and want to reach diverse audiences across a wider area.

Pricing and campaign timelines

DOOH costs vary by market size, inventory type, and impressions. Standard 4-week campaigns in tier-2 US markets typically start at $2,000 to $3,500 per month. Premium locations in New York, Los Angeles, and Chicago run $10,000 to over $50,000 per month. CPM for OOH is generally competitive, in the range of roughly $2 to $7 for static formats in commonly cited industry figures; digital screens transact meaningfully higher on an advertiser-share basis.

Multi-market bundles often carry 10 to 20% discounts. Longer-term contracts can add another 5 to 15% in savings.

On timelines, traditional DOOH campaigns typically require 7 to 10 business days from artwork approval to live posting. Large custom productions such as building wraps may take 10 to 14 days. Programmatic DOOH campaigns can launch in 24 to 48 hours after creative approval, making them well suited for time-sensitive promotions.

How to choose the right agency

Inventory is the starting point. Confirm the agency covers your target markets and the screen formats you need: roadside billboards, transit hubs, malls, street furniture, or mobile inventory. Gaps in coverage are difficult to work around regardless of how strong a platform is otherwise.

Beyond inventory, evaluate these factors:

• Buying model: Make sure the agency supports both traditional insertion orders and programmatic buying so you retain flexibility.
• Launch speed: Programmatic campaigns can go live within 48 hours; traditional placements need more lead time. Match this to your campaign calendar.
• Creative support: Look for help with technical specs, dynamic content management, and compliance, not just media placement.
• Measurement: Prioritize agencies offering brand lift studies, foot traffic attribution, geo-lift analysis, and retail conversion tracking. Performance benchmarks from the sector include brand recall increases of 30 to 60%, and sales ROI examples showing an average return of $5.97 (per the widely cited OAAA/Benchmarketing analysis) per $1 spent.
• Transparency: Request itemized quotes that separate media costs, production, permits, and any additional fees. Volume discounts and multi-market bundle pricing should be available without hidden markups.

No agency excels equally across all of these dimensions. OUTFRONT leads on contextual technology and measurement. Lamar leads on network scale. Boxi leads on mobile and geographic flexibility. The best agency is the one whose strengths align with your specific campaign goals.

How AdQuick handles airport advertising

For brands targeting high-dwell environments, airport advertising through AdQuick gives buyers access to digital screens across airport terminals without negotiating separately with each network. Campaigns can be planned, priced, and measured in one place, with tools covering foot traffic attribution and impression reporting. The marketplace model means you can compare inventory options across locations and formats, then buy programmatically or through traditional orders depending on your timeline and budget.