SriLankan Airlines allows online check-in starting 48 hours before the scheduled flight time, providing ample time for passengers to select seats and obtain boarding passes. Airport check-in counters open about three hours before international flights and two hours before domestic flights, closing roughly 60 minutes prior to departure. Passengers with checked baggage must ensure bags are dropped off within this timeframe to avoid missing the flight. Early check-in, either online or at the airport, is recommended to allow time for security and boarding procedures. SriLankan Airlines’ online and mobile check-in options make the process convenient, helping travelers avoid long queues at the airport.