1. Global Distribution Systems (GDS) These are widely used by travel agencies and airlines for flight bookings. Some popular GDS providers include: Amadeus: Offers comprehensive APIs for flights, hotels, and travel services. You can contact their local partner in Bangladesh or apply for API access through their developer portal. Sabre: Another major GDS with robust flight booking APIs. Travelport: Provides access to a wide range of airlines and flight options. 2. Local and Regional Providers In Bangladesh, there may be local travel technology companies or aggregators that offer APIs for flight bookings: ShareTrip API: Since you're referencing ShareTrip, they might offer an API for B2B or affiliate integration. You can contact them directly to inquire about API access. Go Zayaan API: Another local travel platform that might have an API for flight bookings.