AncillaryOne – Unified API for Travel Ancillary Services

Integrate once, sell everything. AncillaryOne connects airlines, OTAs, and travel platforms to eSIMs, lounges, refund protection, transfers, and more through a single API.

Ancillary Services

eSIM Data Plans – Global connectivity in 190+ countries
Refund Protection – Turn non-refundable bookings into flexible options
Flight Tracking – Real-time flight status with notifications
Carbon Offsetting – Verified environmental offset projects
Private Transfers – Airport and ground transportation
Tours & Activities – Destination experiences and excursions
Lounge Access – Airport lounge bookings worldwide
Flight Delay Compensation – EU261 claims processing
Baggage Compensation – Lost and delayed baggage claims

Resources

Ancillary Revenue Calculator – Estimate ancillary revenue uplift for travel sellers based on booking volume, attach rates, and margins. Ancillary revenue accounts for nearly 15% of airline income globally ($148B+).
Flight API Leaderboard – Ranked comparison of major flight API providers (GDS, Aggregators, Metasearch) scored on coverage, NDC readiness, developer experience, ancillary depth, and market presence.
Hotel API Leaderboard – Ranked comparison of major hotel API providers (Direct, Bedbank, Aggregator) including Booking.com, Expedia, Hotelbeds, Ratehawk, and more.
Monetisation Guide – Comprehensive guide on how to make money selling travel ancillaries, covering business models, channels, tech stack, and unit economics.

Thought Leadership

How MCP Servers Are Shaping Travel – How Model Context Protocol is reshaping travel technology and AI accessibility.
NDC Players Shaping Airline Distribution – Analysis of NDC implementation challenges and key players.
How Online Travel Agencies Make Money – Revenue models and the future of OTAs in an AI-first world.