To check in for a Singapore Airlines flight, you can use online check-in, mobile app, self-service kiosks, or airport counters. Online and mobile check-in opens 48 hours before departure and closes 1.5 hours prior. You can check in at singaporeair.com or via the Singapore Airlines app, select your seat, add baggage, and get your boarding pass by email or mobile wallet. Online check-in is not available if your itinerary includes partner airline flights or if you are an unaccompanied minor.

Self-service kiosks are available at select airports, including Singapore Changi, starting 24 hours before departure. You can print your boarding pass and baggage tags, then drop your bags at the designated counters. Kiosk check-in is not available for unaccompanied minors or passengers needing special assistance.

Airport counters open 3 hours before departure and close 40 minutes before the flight. Passengers with checked luggage should arrive at least 2.5 hours before departure, and those without bags at least 1.5 hours before. At Singapore Changi Airport, early check-in is available at Jewel Changi from 8:00 AM to 11:59 PM, allowing baggage drop up to 24 hours before departure, except for US-bound flights which must check in at the main terminal.

Always arrive at the boarding gate at least 15 minutes before departure, as gates close on time. Drop checked baggage at least 60 minutes before departure. Following these times and options ensures a smooth check-in with Singapore Airlines.