A travel API provider gives your website, app or agent system access to flights, hotels and other travel content through code, and takes on the work of connecting, certifying and maintaining each supplier. Choosing one is mostly about four things: whether the content you need comes back in one search, what happens after the booking, how integration and support work, and how the commercial model scales with you. This checklist sets out the questions to ask any provider, including us.

4areas to evaluate
3pricing models to compare
5red flags to watch

1. Content: does one search return what you sell?

No single channel carries every fare or room. For flights, full-service carriers file in the GDS, many sell richer offers through NDC, and most low-cost carriers sell outside the GDS. For hotels, bed-banks, online travel suppliers and direct chain connections each carry different inventory and rates. Ask:

  • Which GDS, NDC carriers and low-cost airlines are live today — on your routes?
  • Are GDS, NDC and LCC fares returned in one normalised result set, or as separate calls you merge yourself?
  • Which hotel sources are connected, and are properties and rooms mapped and deduplicated across them?
  • Can you add your own GDS credentials and directly contracted hotels?
  • What other services sit behind the same API — transfers, activities, visas?

Background: GDS vs NDC, GDS vs bed-bank vs direct, hotel mapping.

2. After the booking: servicing is where integrations break

Search and book are the easy half. Ask how the API handles:

  • Void, refund and reissue — automated through the API, or manual?
  • Airline schedule changes after ticketing — are you notified?
  • Fare rules — returned in a form your staff and customers can read?
  • Asynchronous events — are there webhooks for booking and status changes?
  • NDC order servicing — changes and refunds on NDC bookings, not just shopping?

3. Integration and support

  • Sandbox — is there a test environment with realistic content before you sign?
  • Conventions — REST/JSON, authentication method, idempotency keys on booking calls, versioning and rate limits.
  • Documentation — full endpoint reference and error catalogue, not just a marketing overview.
  • Certifications — which GDS and airline certifications does the provider hold, and with which partner programmes?
  • Support — hours, channels and response times when a ticketing call fails at night in your market.

4. Commercials and ownership

ModelHow it worksWatch for
Usage-based APIPay per search, booking or transactionLook-to-book limits and how search volume is billed
Subscription platformMonthly fee for a hosted booking engine on the same contentWhat is included as volume grows
Licence / source codeOne-time licence to self-hostWho maintains supplier connections afterwards

Ask also whether you can move between models later — for example from API to a hosted portal, or from hosted to self-hosted — without re-integrating. Third-party costs such as GDS contracts, supplier deposits, payment fees and IATA accreditation sit outside any provider’s price.

Red flags

  • Supplier counts with no list of which suppliers are live on your routes.
  • No sandbox until after contract signature.
  • Servicing (void, refund, reissue) handled “manually by our team”.
  • No way to use your own GDS credentials or hotel contracts.
  • Review scores on the vendor’s own site that you cannot find on independent review platforms.

How Innovate Solution answers these questions

For transparency, our own answers: TripGic returns 3 GDS (Amadeus — certified partner, Sabre, Travelport — TDN certified partner), 37 NDC carriers and 100+ low-cost airlines in one normalised REST search with sub-second typical response, and 2M+ hotel properties with room mapping and deduplication. You can connect your own PCC / Office ID / SID. Booking calls use idempotency keys; webhooks cover booking and status events; sandbox access comes with onboarding. Void, refund and reissue are automated on the platform side, with schedule-change alerts. Support is 24/7 with a first response within 3 minutes. Pricing is usage-based for the API, with SaaS and Source Code editions on the same content. Details: flight booking API, hotel booking API, GDS integration, developer docs.

For a structured shortlist, use the vendor evaluation checklist and the travel API providers buyer’s guide.

Frequently asked questions

What does a travel API provider do?

A travel API provider connects to airlines, GDS, hotel suppliers and other sources, normalises their content and booking flows, and exposes them through one programming interface so your website, app or agent system can search, book and service travel without integrating each supplier yourself.

What is the most important factor when choosing a travel API provider?

Content coverage on your own routes and markets, returned in one normalised search — then how well the API handles servicing after the booking, such as voids, refunds, reissues and schedule changes.

Should a flight API include NDC and low-cost carriers?

For most sellers, yes. Many full-service airlines sell richer offers through NDC and most low-cost carriers sell outside the GDS, so a GDS-only API misses part of the market.

Can I use my own GDS account with a travel API provider?

Some providers allow it. With Innovate Solution’s TripGic API you can connect your own Amadeus, Sabre or Travelport credentials (PCC / Office ID / SID) and keep your negotiated fares.

How are travel APIs usually priced?

Common models are usage-based pricing per search or booking, subscriptions for a hosted booking engine on the same content, and one-time licences for self-hosted source code. Compare look-to-book limits and third-party costs alongside the headline price.

Related pages

Put our answers to the test — request sandbox access scoped to your routes.