How to Build a Travel Booking App with AI
Contents
Last updated: August 2026.
A travel booking app's real product is whichever GDS sits behind the search bar, not the search bar itself. Amadeus, Sabre, and Travelport collectively distribute most of the flight and hotel inventory sold through any third-party channel, and which one a platform integrates with shapes its pricing, its geographic strengths, and how deep its booking features can go, long before a single screen gets designed.
Picking a GDS is a geography and depth decision
| Amadeus | Sabre | Travelport | |
|---|---|---|---|
| Best for | Startups, OTAs, fast integration | North American corporate travel | European corporate travel |
| Airlines | 400+, including 130+ low-cost carriers | Exclusive NDC access to ANA, Turkish, Aeromexico, LATAM group | Strong European coverage |
| Lodging options | ~2.3M across 650K+ properties | 2M+ | Combines 3 legacy systems |
| Developer experience | Modern REST API, free sandbox | REST and SOAP, deeper PNR management | Universal API for flights/hotels/cars |
NDC (New Distribution Capability) is worth knowing about separately: it's a newer, REST-based standard that pulls airline content directly, bypassing the traditional GDS layer entirely for carriers that support it, and it's increasingly part of how even the major GDS providers themselves deliver content.
The FTC's pricing rule covers lodging, not just event tickets
The same Junk Fees Rule that forces upfront, all-in pricing for live-event tickets applies just as directly to short-term lodging. Resort fees, cleaning fees, and any other mandatory charge have to be included in the total price shown upfront, not revealed for the first time at checkout, and civil penalties run past $50,000 per violation, adjusted annually. This applies to a small property manager's own booking app exactly the way it applies to a major booking platform, and the FTC has been sending warning letters directly to companies in this space in 2026, not just litigating the largest players.
What drives the cost
Travel app development runs roughly $80,000 to $600,000 or more, and GDS integration depth is one of the biggest cost drivers inside that range, a basic flight-search integration is a different scope than a platform handling multi-supplier hotel inventory, seat selection, and full PNR management across several GDS providers at once. Most of that figure is the GDS integration itself, not the interface, generating the native app in Huxly (Expo, Flutter, or Swift, at $25 or $99 a month) to wrap around whichever GDS API you've integrated keeps the screen-building portion of the budget from scaling with the same complexity as the GDS work underneath it. For the fuller cost picture across app categories, see our breakdown of what it costs to build a mobile app in 2026, and for how the same pricing-transparency rule plays out for event ticketing specifically, see our events app guide.
FAQ
Which GDS should I integrate with for a new travel booking app?
Amadeus for most startups and OTAs, given its free sandbox, modern API, and strong global coverage. Sabre for North American corporate travel needing deep PNR management. Travelport for platforms focused specifically on European corporate travel.
What's NDC, and do I need it?
New Distribution Capability is a REST-based standard that lets airlines distribute content directly, bypassing the traditional GDS layer. It matters if you need content from specific carriers only available through NDC, or want more direct, flexible airline data than a traditional GDS connection provides.
Can Huxly connect to Amadeus, Sabre, or Travelport directly?
Not as a one-click option the way it connects to Supabase or Stripe, GDS integrations require their own developer accounts and API setup regardless of which tool builds the app. Huxly generates the native interface that calls whichever GDS API you've configured.
Does the FTC's pricing rule really apply to short-term rentals, not just hotels booked through big platforms?
Yes. It applies to short-term lodging broadly, including a small property manager's own booking app, requiring the full price (resort fees, cleaning fees, and other mandatory charges included) to be shown upfront rather than added at checkout.
How much does GDS integration add to development cost?
Significantly, and it scales with depth. A basic flight-search connection is far cheaper than a platform handling multi-GDS hotel inventory, seat selection, and full booking and ticketing workflows across several providers at once.
Can I integrate with more than one GDS at the same time?
Yes, and many serious travel platforms do, combining Amadeus, Sabre, and Travelport to maximize inventory coverage and compare fares across sources. It adds real integration complexity on top of using just one.
What happens if my lodging app doesn't disclose fees upfront?
The same legal exposure as an event-ticketing app under the same rule: civil penalties past $50,000 per violation, and the FTC has shown it will pursue both large platforms and smaller operators in this space.
Is Amadeus or Sabre better for a startup building its first travel app?
Amadeus, in most cases, mainly because of its free sandbox environment, modern documentation, and lower barrier to getting a first integration working without an existing enterprise relationship.
