1. 1Visit southwest.com/check-in or open the Southwest app.
2. 2Enter your confirmation number, first name, and last name.
3. 3Click 'Check In' exactly at the 24-hour mark to secure the best boarding position.
4. 4Review your assigned boarding group and position (e.g., A, B, or C).
5. 5Download your mobile boarding pass or print it.
6. 6Proceed to the gate and line up according to your assigned boarding position.

Confirmation number, first and last name. For international flights, a valid passport is required, and visa/entry documents depending on the destination. REAL ID or standard ID for domestic flights.

Southwest has an open seating policy and does not assign seats; passengers choose any available seat upon boarding. Boarding order is determined by check-in time, so checking in exactly 24 hours before departure is crucial unless you purchase EarlyBird Check-In.

Passport information must be entered during booking or check-in. Passengers and baggage must be checked in at least 60 minutes prior to scheduled departure. You may need to verify your passport at the ticket counter or kiosk before receiving a boarding pass.

All customers on the same reservation will be assigned the same boarding group, except for Group travel reservations. Families with children 6 and under can board during Family Boarding, which occurs between the A and B groups.

1. 1'Unable to check in online' - For international flights, this often means passport verification is required at the airport.
2. 2'Check-in button not working' - Ensure you are checking in exactly at or after the 24-hour mark; refreshing the page right at 24 hours is recommended.
3. 3'Boarding pass not issued' - You may have been selected for secondary security screening (SSSS) or need to see an agent.