Duffel helps businesses to provide flight booking experiences to their customers by offering a platform that enables users to search for flights with real-time pricing and availability, increase revenue with ancillaries like baggage and lounge access, manage customer refunds and cancellations, and integrate with its API or ready-to-go agent booking tool. The company is rebuilding the infrastructure that underpins the travel industry to bring it into the modern era and is backed by Benchmark, Blossom, Index Ventures, Kima Ventures, and Y Combinator (S18).