How do I check in for Southwest Airlines?

You can check in starting 24 hours before departure at southwest.com, the Southwest app, or airport kiosks. Enter your confirmation number and name to view your assigned seat and download your boarding pass.

Can I change my seat after check-in?

Yes, you can view or change your assigned seat starting 24 hours before departure during the check-in process.

Can I check in online for international flights?

Yes, but you must enter your passport information, and you may still need to verify documents at the airport counter before proceeding to security.

Southwest Airlines Online Check-In Guide (2026)

Southwest Airlines check-in opens 24 hours before departure. You can view or change your assigned seat at check-in. Check-in closes 45 minutes before domestic flights and 60 minutes before international flights.

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Check-In Timing

Airline	Southwest Airlines (WN)
Check-In Opens	24 hours before scheduled departure
Check-In Closes	45 minutes before domestic departures, 60 minutes before international departures
Check-In URL	https://www.southwest.com/air/check-in/
Mobile App	Southwest Airlines app (iOS, Android)
Mobile Boarding Pass	Yes
Airport Kiosk	Yes

Step-by-Step Check-In Guide

1. Visit southwest.com/check-in or open the Southwest app. 2. Enter your confirmation number, first name, and last name. 3. Click 'Check In' starting 24 hours before departure. 4. View or change your assigned seat (if your fare includes seat selection). 5. Download your mobile boarding pass or print it. 6. Proceed to the gate and board in your assigned group.

Documents Needed

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.

Seat Selection

Southwest switched to assigned seating for all flights departing on or after January 27, 2026. Choice, Choice Preferred, and Choice Extra fares include seat selection at booking. Basic fares receive a seat assignment at check-in. You can view or change your seat starting 24 hours before departure.

International Check-In Rules

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.

Group Check-In

Families on the same reservation are assigned to the same boarding group, and Southwest works to seat children under 13 with an adult. Families with children 6 and under board during Family Boarding.

Troubleshooting

1. 'Unable to check in online' - For international flights, this often means passport verification is required at the airport. 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. 'Boarding pass not issued' - You may have been selected for secondary security screening (SSSS) or need to see an agent.

Frequently Asked Questions

How do I check in for Southwest Airlines?: You can check in starting 24 hours before departure at southwest.com, the Southwest app, or airport kiosks. Enter your confirmation number and name to view your assigned seat and download your boarding pass.
Does Southwest assign seats?: Yes — Southwest switched to assigned seating for all flights departing on or after January 27, 2026. Choice, Choice Preferred, and Choice Extra fares include seat selection at booking; Basic fares receive a seat assignment at check-in.
Can I change my seat after check-in?: Yes, you can view or change your assigned seat starting 24 hours before departure during the check-in process.
Can I check in online for international flights?: Yes, but you must enter your passport information, and you may still need to verify documents at the airport counter before proceeding to security.