One free API for flights, hotels, and activities.
One free travel API for flights, hotels and activities. You search live inventory, hold it, then issue, all over a single REST API priced in USD. We built it for travel agencies and developers who ship booking apps, travel software and OTA platforms. It's free to integrate, and after that you pay 1% per issued ticket, never more than $10.
The inventory your product needs, in one place.
Global flight, hotel and activity inventory for your travel app, all behind one API contract that stays the same as you grow.
Hotels worldwide
Airlines
Activities across the world's destinations
Backed by the world's leading travel inventory.
Global distribution systems, airlines, hotels, and travel platforms, unified behind one API.
Sharper flight fares across 26 markets.
Direct contracts with tier-one suppliers in these 26 countries unlock fares you will not find through standard distribution. Hover a highlighted country to explore.
One simple, transparent price.
No platform fees, no seat minimums, no surprises. You pay only when you earn.
The API is always free
Search, availability, pricing, and the full sandbox cost nothing. Integrate for as long as you need before you issue a single ticket.
1% per issued ticket
A 1% fee on each successful issuance, capped at $10 . That's the ceiling per issuance, and it doesn't change.
Every plan includes
- 5M+ hotels worldwide
- 1,000+ airlines
- 2,500+ activities across global destinations
- A full sandbox with a seeded wallet
- Prices normalized to USD
See what issuance would cost you.
Enter your monthly volume and average order value. We apply 1% per issuance, capped at $10.
Flights
Stays
Activities
Estimated monthly fee
1,000 issuances / month
Just an estimate. Your real fee is 1% of each issued order, and never more than $10 per issuance.
Consulting and support bundle.
Optional. Get a year of hands-on help from the team that built the API.
One flat fee for a full year of implementation guidance and priority support.
- Guided integration and architecture review
- Priority support with fast response times
- Sandbox-to-production go-live checklist
- Direct line to the engineers behind the API
Fund your wallet your way.
Top up once, issue against your balance. Deposit with any of these.
From first request to first ticket.
Two steps, at your pace.
Integrate and test in the sandbox
Wire up the API and run the full booking flow against the sandbox. Search is real, and no funds are spent. Take as long as you need.
Go live and start issuing
Point your client at production and issue your first ticket whenever you're ready. Same requests, now live.
What you can build
Build a travel booking app for flights, hotels, and activities.
Use the Hermeseus travel API to power a mobile app where travellers search live flight fares, hotel availability and activities, then book and pay right in the app. A single REST API feeds your iOS and Android build with real-time inventory, all in USD.
- Real-time flight, hotel, and activity search from one API.
- In-app booking, ticket issuance, and downloadable vouchers.
- A free sandbox to build and test before you go live.
FlightsHotelsActivitiesLaunch a travel booking website or OTA.
Turn the free Hermeseus API into a full booking website or online travel agency. Add flight, hotel and activity search to any web stack, with results built for SEO and a checkout that issues tickets straight against your balance.
- Flight, hotel, and activity search for any web framework.
- Clean JSON and an OpenAPI spec to wire up fast.
- Prices normalized to USD for a global audience.
For teams building travel software.
If you build travel software, booking engines or back-office tools for agencies, Hermeseus is the content layer behind your product. Ship faster with one contract for flights, hotels and activities, instead of wiring up dozens of suppliers one by one.
- One API instead of many supplier integrations.
- Stable, versioned endpoints with clear errors.
- Optional consulting from sandbox to production.
Build your travel product on one API.
Free to integrate. 1% per issued ticket, capped at $10. Live coverage across flights, hotels, and activities.