Southwest Airlines' check-in process begins 24 hours before your scheduled flight departure. Since Southwest has an open seating policy, checking in early is crucial for securing a better boarding position (A, B, or C group). The earlier you check in, the better your chances of selecting a preferred seat.

You can check in online via the Southwest website or through the mobile app, where you can print or save your boarding pass. If you prefer to check in at the airport, you can use a self-service kiosk or visit the ticket counter. EarlyBird Check-In a paid service, automatically checks you in 36 hours before departure, giving you a better boarding position without manual effort.