Southwest Airlines allows online check-in starting 24 hours before your flight’s scheduled departure. You can check in via their website or mobile app by entering your confirmation number and passenger details. After checking in, you can print your boarding pass or use a mobile boarding pass on your phone. Southwest uses an open seating policy, so boarding positions are assigned based on check-in time, with earlier check-ins getting better boarding groups and positions.

For those wanting an earlier boarding spot, Southwest offers EarlyBird Check-In, which automatically checks you in 36 hours before departure for a fee. Business Select fares include priority boarding and do not require EarlyBird. Airport check-in counters open 2 hours before domestic flights and 3 hours before international flights, closing 45 minutes and 60 minutes before departure, respectively. Self-service kiosks are also available for quick check-in, printing boarding passes and baggage tags.

If you have checked luggage, drop it off at designated counters after check-in. It is recommended to arrive early to allow time for security and boarding. To secure a better boarding position, check in as soon as the 24-hour window opens unless you have EarlyBird or Business Select. Using the mobile app can simplify check-in and boarding pass access.