To check in for a Singapore Airlines flight, passengers have several convenient options including online check-in, mobile app check-in, airport self-service kiosks, and traditional airport counters. Online check-in opens 48 hours before the scheduled departure and closes 90 minutes prior to the flight. Passengers can visit the Singapore Airlines website and enter their booking reference or KrisFlyer membership details along with their last name to retrieve their booking. After verifying flight information, they can select or change seats, add special requests, and obtain a digital boarding pass. This boarding pass can be downloaded, printed, or saved on a mobile device for use at security checkpoints and boarding gates. Those traveling with only carry-on luggage can proceed directly to security and the gate, skipping baggage drop. For passengers with checked luggage, after completing online check-in, they can drop their bags at dedicated baggage drop counters at the airport, which generally remain open until 40 minutes before departure for international flights.

Mobile check-in offers the same functionality through the Singapore Airlines mobile app, allowing passengers to check in, choose seats, and access boarding passes conveniently on their smartphones. This method also supports storing the boarding pass in mobile wallets for easy retrieval. At the airport, self-service kiosks enable passengers to check in by entering their booking reference or scanning their passport. These kiosks print boarding passes and baggage tags, helping reduce wait times compared to staffed counters. After printing baggage tags, travelers can drop their luggage at designated counters. For passengers requiring assistance, traveling with infants, unaccompanied minors, pets, or carrying special items, check-in at the staffed counters is necessary to ensure proper handling and documentation.

Singapore Airlines counters open about three hours before international flights and close approximately 40 minutes before departure. For domestic flights, counters typically open 2.5 hours before departure and close 40 minutes prior. It is recommended that passengers arrive early to allow sufficient time for check-in, security screening, and boarding. Boarding gates close 15 minutes before departure, so completing check-in and arriving at the gate early is essential. Special travel documents such as passports, visas, or health certificates should be ready during check-in. Group check-in is possible if all passengers are on the same booking, facilitating seating arrangements and boarding. Passengers who complete online or mobile check-in and carry only hand luggage can bypass check-in counters and proceed directly to security.

In summary, checking in for a Singapore Airlines flight involves choosing the preferred method—online, mobile, kiosk, or counter—entering booking or personal details, selecting seats if desired, handling baggage drop if necessary, and obtaining a boarding pass. Early check-in streamlines the airport experience, reduces waiting times, and helps ensure timely boarding. Passengers are advised to check specific airport and flight requirements as check-in times may vary depending on the destination and airport. Preparing documents and completing check-in within the specified window ensures a smooth start to the journey with Singapore Airlines.