JetBlue’s check-in policies are designed to simplify your travel experience. Passengers can check in online, via the mobile app, or at the airport. For domestic flights, check-in closes 60 minutes before departure, while international flights require check-in completion 90 minutes before takeoff. Passengers must present valid identification, travel documents, and boarding passes at security. Additionally, any checked baggage must be dropped off within the airline’s designated timeframe. Following these policies ensures a hassle-free boarding process.