Norba.io is a REST API for searching, pricing and booking flights directly with airlines over IATA NDC, without a GDS in the middle. Each airline implements NDC its own way: different versions, auth and errors. We deal with that and give you one JSON format for search, seats, bags, booking, changes and refunds. The sandbox is free and you get an API key in 90 seconds. Redeem code PH-LAUNCH-100 in Billing for €100 of credit.