Airline Code Lookup API APIs

Branded Fares Upsell

The Amadeus Branded Fares Upsell API takes a flight offer and returns the carrier's branded fare families for that itinerary, complete with included services such as bags, seat selection, and refundability. The single POST to /shopping/flight-offers/upselling sends an existing flight offer payload back to Amadeus and gets matching upsell options, so booking flows can present 'Economy Light' through 'Business Flex' tiers side by side. It targets airline.com replacement experiences and corporate booking tools that need branded merchandising rather than a single base fare.

Flight Availabilities Search

The Amadeus Flight Availabilities Search API returns seat availability per booking class for one or more origin-destination pairs and dates. The single POST to /shopping/availability/flight-availabilities is closer to a GDS availability call than to a fare search — it gives the number of bookable seats per Reservation Booking Designator on each flight segment, which is what travel agencies and OTAs need to construct multi-segment tickets without overselling. Use this when a fare-only search is not enough and you need raw availability per cabin class.

Flight Cheapest Date Search