Southwest Airlines Check-In Guide: Online, Mobile & Airport Options
To ensure a smooth flight with Southwest Airlines, it’s important to complete your check-in before departure. Checking in allows you to receive your boarding position, access your boarding pass, and prepare for boarding without last-minute stress.
This guide explains how Southwest Airlines check-in works, the available check-in methods, EarlyBird Check-In, and key rules you should know before heading to the airport.
We provide independent travel information and assistance. We are not affiliated with Southwest Airlines. Check-in rules and boarding procedures are set by the airline and may change.
For baggage rules related to your flight, see our carry-on and checked baggage guidelines.
Southwest Airlines Check-In Options
Southwest Airlines offers multiple ways to check in:
- Online check-in (website)
- Mobile app check-in
- Airport kiosk check-in
- Airport counter check-in
Southwest does not assign seats. Instead, passengers receive a boarding group and position (A, B, or C) during check-in, which determines boarding order.
Learn how boarding positions affect baggage space in our airline baggage guidelines.
Online Check-In with Southwest Airlines
Online check-in opens 24 hours before scheduled departure.
Steps to Check In Online
- Visit the official Southwest Airlines website.
- Select the Check-In option on the homepage.
- Enter the passenger’s first and last name and confirmation number.
- Review your flight details carefully.
- Complete check-in to receive your boarding position.
- Download or print your boarding pass.
Boarding passes can be saved on your phone or printed at home.
Charges related to checked bags may still apply—see airline baggage fees & extra charges.
Southwest Airlines Mobile App Check-In
Passengers can also check in using the Southwest Airlines mobile app.
Mobile App Check-In Process
- Install the Southwest mobile app.
- Open the Check-In section.
- Enter your confirmation number or log in.
- Review flight details and complete check-in.
- Access your digital boarding pass in the app or via email.
Mobile check-in helps avoid airport lines and saves time.
Airport Check-In: Kiosk & Counter
Kiosk Check-In
- Available at most airports
- Enter booking details or swipe a payment card
- Print boarding pass if needed
Counter Check-In
Passengers may check in at the airport counter if needed. You must arrive before the airline’s cut-off time and present valid travel documents.
If you plan to check bags, review checked baggage rules by airline before arriving.
Southwest Airlines Check-In Policy
Here are key rules passengers should know:
- Online check-in opens 24 hours before departure
- Check-in closes 60 minutes before domestic flights
- Southwest uses open seating (no seat assignments)
- Boarding groups: A, B, and C
- Earlier check-in = better boarding position
- Families with children under six may board between Group A and B
- Boarding passes are usually electronic, but printing is allowed
- Failure to check in may result in cancellation of reservation
Understand how boarding order impacts carry-on space in our carry-on baggage rules guide.
EarlyBird Check-In Explained
EarlyBird Check-In is an optional paid service that automatically checks you in 36 hours before departure, earlier than standard check-in.
Benefits of EarlyBird Check-In
- Better boarding position
- Less stress at check-in
- Higher chance of overhead bin space
Cost: Typically $15–$25 per flight
Non-refundable, even if the flight is changed or missed
For carry-on space tips, read how to avoid baggage issues while boarding.
Check-In Timing: Domestic vs International Flights
- Domestic flights
- Online check-in: 24 hours to 60 minutes before departure
- Airport counter closes ~30 minutes before departure
- International flights
- Online check-in may close earlier
- Airport arrival recommended 2–3 hours before flight
International baggage rules vary—see international airline baggage policies.
Frequently Asked Questions (FAQs)
Is check-in mandatory for Southwest Airlines?
Yes. Check-in is required to receive your boarding position and boarding pass.
Does Southwest assign seats?
No. Seating is open and available on a first-come, first-served basis during boarding.
Can I check in at the airport?
Yes, via kiosk or counter, but online check-in is recommended.
Does EarlyBird guarantee an A-group position?
No. It improves your boarding position but does not guarantee a specific group.
Where can I find baggage rules for my flight?
Use our airline baggage guidelines and baggage fees guide.
