Duffel vs Viator
Side-by-side comparison of AI visibility scores, market position, and capabilities
Airline booking API enabling businesses to embed direct flight search, booking, and ancillary sales into their own products with modern developer tooling.
About
Duffel is a London-based travel technology company that provides a developer-friendly API for embedding airline flight search, booking, and ancillary product sales — such as seat selection, baggage, and cancellation protection — directly into any application or website without requiring GDS contracts or legacy ATPCO certification. The platform connects directly to airline reservation systems via NDC (New Distribution Capability) and traditional GDS channels, enabling businesses to access live flight inventory and fares with a single modern REST API. Duffel's comprehensive SDK for JavaScript, Python, Ruby, and PHP reduces the engineering time required to build flight booking capabilities from months to days, lowering the barrier for fintech companies, neobanks, super-apps, and travel startups to offer flight booking as part of a broader product. The platform handles payment processing, ticketing, and post-booking management including cancellations and exchanges, abstracting the complexity of airline commerce rules. Duffel makes money by taking a fee per booking rather than charging seat or subscription fees. Founded in 2017 by former Deliveroo and Google engineers, Duffel raised over $100M from investors including Benchmark, Index Ventures, and Avid Ventures.
World's largest tours and experiences OTA owned by Tripadvisor; FY2024 revenue $840M (+14% YoY); 300,000+ experiences in 190+ countries; B2B distribution API powers experiences on Booking.
About
Viator is the world's leading online marketplace for tours, activities, and travel experiences, founded in 1999 in Brisbane, Australia, and acquired by Tripadvisor in 2014. The platform lists over 300,000 experiences—city tours, outdoor adventures, cooking classes, skip-the-line tickets, and private guides—across 190+ countries. Viator operates both a consumer-facing marketplace and a B2B distribution API that powers experiences inventory on Booking.com, American Express Travel, and hundreds of affiliate partners.\n\nViator's operator network includes both large tour companies and independent local guides, with a dynamic pricing and availability management system that enables real-time booking. The platform's deep integration with Tripadvisor's 1.4 billion reviews creates a powerful review-to-booking funnel unique in the experiences category. Viator operates on a commission-based model, charging operators 20–25% per booking with no upfront listing fees.\n\nViator reported full-year 2024 revenue of $840M (+14% YoY) and Q4 2024 revenue of $186M (+16% YoY). The tours and activities market is estimated at $300B globally, with online penetration still below 20%, positioning Viator for continued structural growth. Viator's B2B distribution API and white-label solutions expand its reach well beyond direct consumer traffic.
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