Last Updated on July 25, 2026 by Daniel Globe
Southwest Airlines check-in is still simple, but the process changed in 2026. Southwest now uses assigned seats and boarding Groups 1 through 8, so checking in is no longer about claiming an open-seating position. Your fare, seat type, Rapid Rewards status, and eligible card benefits now affect your seat and boarding group.
Quick Answer
Southwest check-in opens 24 hours before the flight’s original scheduled departure. Check in on Southwest.com, in the Southwest app, at a kiosk, through a Skycap where available, or at the ticket counter. Basic fares receive a Standard seat at check-in; most other fares can select an included seat earlier.
Key Takeaways
- Online and mobile check-in open 24 hours before the flight’s original scheduled departure time.
- Southwest has assigned seats. Basic fares normally receive a Standard seat at check-in, while Choice and higher fares include seat selection based on the fare.
- EarlyBird Check-In and the former Upgraded Boarding product are no longer available for current assigned-seat flights.
- Domestic check-in closes 30 minutes before departure. International check-in usually closes 60 minutes before departure, or 75 minutes for flights departing Aruba.
- Airport check-in itself has no service fee, but checked bags, paid seats, and Priority Boarding may cost extra.
- International travelers may need passport verification at a kiosk or ticket counter, and some routes do not allow online check-in.
At a Glance
| Time Required | About 2 to 5 minutes online or in the app; allow more time at the airport |
| Difficulty | Easy |
| Tools Needed | Confirmation number, passenger’s first and last name, phone or computer; valid ID or passport for airport travel |
| Cost | No fee to check in; optional baggage, seat, and Priority Boarding charges may apply |
How to Check In for a Southwest Flight Online
The fastest option for most travelers is online check-in through Southwest. The check-in window opens 24 hours before the flight’s original scheduled departure, even if the flight later shows a delay.
- Open Southwest.com or the Southwest app and select Check in.
- Enter the six-character confirmation number and the first and last name of a passenger on the reservation.
- Review the itinerary and select the passengers you want to check in.
- Review the assigned seat or available seat options. Basic customers normally receive a Standard seat at check-in. Eligible customers may review, change, or buy an available seat.
- Indicate whether you plan to check bags and pay any standard bag charges that apply.
- Retrieve the boarding pass or security document. Save the mobile pass to Apple Wallet or Google Wallet when available, or print a paper copy.
Note: A security document is not always a final boarding pass. If your seat cannot be assigned during check-in, use the security document to pass through the checkpoint, then see a Southwest agent at the departure gate for a seat assignment and boarding pass.
What You Need Before Starting
- Your Southwest confirmation number
- The passenger’s first and last name as shown on the reservation
- A working phone, computer, or airport kiosk
- A valid payment method if you add paid bags, a seat upgrade, or Priority Boarding
- A REAL ID-compliant license or another TSA-accepted ID for domestic travel if you are 18 or older
- A valid passport book and any required entry documents for international travel
Mobile Check-In Options
The Southwest app lets you retrieve a reservation, check in, view your seat and boarding group, follow flight updates, and display a mobile boarding pass. A digital pass can be scanned at the TSA checkpoint and at the gate. Saving it to Apple Wallet or Google Wallet can make it easier to open when airport Wi-Fi or cell service is slow.
If you change planes, the app provides a boarding pass for each flight segment. Some travelers cannot use a mobile boarding pass, including Unaccompanied Minors, lap children, travelers on certain international or partner itineraries, and some military or government fares. In those cases, use a kiosk or speak with a Southwest agent.
Pro Tip: Take a screenshot only as a backup, then keep the live boarding pass in the app or digital wallet. A live pass is more likely to reflect a gate, boarding time, seat, or flight change.
Kiosk Check-In at the Airport
Image note: This photo shows an Allegiant Air aircraft and is a general aviation image, not a Southwest check-in kiosk or Southwest aircraft.
Southwest self-service kiosks are available at many airports. They can print boarding passes, add a Rapid Rewards number or Known Traveler Number, review a seat assignment, provide a QR code for changing an eligible seat, check bags, print bag tags, and collect applicable baggage fees. Kiosks can help reduce time spent in full-service lines.
To retrieve a reservation, enter the confirmation number, enter a Rapid Rewards number, scan a passport or mobile boarding pass, or use another method offered on the screen. Follow the prompts, attach any printed tags to the correct bags, and take the bags to the designated drop area.
Most customers can use a kiosk, but Unaccompanied Minors and customers on Group reservations of 10 or more passengers must use the ticket counter. Kiosk features may also be limited on partner itineraries.
Assigned Seating Replaced EarlyBird Check-In
| Feature | Current Southwest Policy |
|---|---|
| Seating system | Assigned seating on all current Southwest flights |
| EarlyBird Check-In | No longer available for flights under the assigned-seating system |
| Boarding order | Groups 1 through 8, based on fare, seat, status, and eligible card benefits |
| Paid early boarding option | Priority Boarding, when available, from 24 hours to 30 minutes before departure |
Southwest moved from open seating to assigned seats on January 27, 2026. The old EarlyBird Check-In service and the former Upgraded Boarding product ended with that change. Customers who want earlier access to overhead bin space can now buy Priority Boarding when available. Southwest lists this option at $10 to $75 per flight segment, per customer, and prices may vary.
How Seat Assignment Works by Fare
| Fare | Included Seat Choice |
|---|---|
| Basic | A Standard seat is normally assigned at check-in or, when necessary, at the departure gate. |
| Choice | Choose an available Standard seat at booking. |
| Choice Preferred | Choose an available Preferred or Standard seat at booking. |
| Choice Extra | Choose an available Extra Legroom, Preferred, or Standard seat at booking. |
Rapid Rewards tier status and eligible Southwest credit card benefits may provide better seat choices or boarding groups than the fare alone. Review the current assigned-seat selection rules for your reservation.
Pro Tip: Families on a Basic fare should check in when the 24-hour window opens so they can review their assigned seats and ask for help early if a child age 12 or younger is not seated next to an accompanying traveler on the same reservation.
Southwest Airlines Ticket Counter Check-In
Ticket counter check-in remains available for travelers who want in-person help or cannot complete the process online. Bring your confirmation information and valid identification. An agent can check you in, issue a boarding pass, verify documents, accept checked baggage, collect applicable charges, and help with special travel needs.
Use the Ticket Counter When You Need Extra Help
- You are traveling as an Unaccompanied Minor or on a large Group reservation.
- You need passport or immigration-document verification.
- You are traveling with a trained service dog and must present the required form.
- You need wheelchair assistance, a gate pass, or help with another accessibility request.
- The website, app, or kiosk did not issue a boarding pass.
- You have an oversized or overweight bag that requires airport payment.
The ticket counter can take longer during busy periods, so use Southwest’s airport information page to check the suggested arrival time for your departure airport.
Check-In Deadlines and Requirements
| Requirement | Domestic | International |
|---|---|---|
| Check-in deadline | 30 minutes before departure | 60 minutes before departure; 75 minutes when departing Aruba |
| Airport bag-acceptance deadline | At least 45 minutes before departure | At least 60 minutes before departure; 75 minutes when departing Aruba |
| Gate requirement | Have a boarding pass and be in the gate area at least 10 minutes before departure | |
Warning: Do not treat these cutoffs as suggested arrival times. Security lines, document checks, parking, shuttle rides, and bag-drop lines require extra time. Missing a check-in or gate deadline can cause Southwest to cancel the reservation or rebook you.
Adults age 18 and older flying within the United States need a REAL ID-compliant driver’s license or another TSA-accepted form of identification. The name on the reservation should match the name on the ID. Travelers age 17 or younger generally do not need ID for domestic TSA screening, but Southwest may require age documents for an Unaccompanied Minor or lap child.
The safest plan is to finish check-in before leaving for the airport, then use Southwest’s airport-specific arrival guidance instead of aiming for the final cutoff.
Checking Bags During Check-In
You can indicate the number of checked bags and pay standard baggage charges during or after online check-in on Southwest.com or in the app. At the airport, print bag tags at a self-tagging kiosk where available, attach each tag to the correct bag, and take the bags to the bag-drop line with your ID ready.
Digital bag check is available after check-in begins and generally ends 60 minutes before a domestic flight or 90 minutes before an international flight. The bag still must reach the airport before the separate bag-acceptance deadline. International itineraries require customers to present checked bags at the ticket counter. Oversize and overweight bag charges must be handled at the airport.
Checked-bag charges depend on the fare, Rapid Rewards status, eligible card benefits, route, and when the trip was ticketed or changed. Review Southwest’s current checked-baggage policy before travel instead of relying on an older “bags fly free” claim.
Tips for a Smooth Check-In Experience
- Set a reminder: Check-in opens exactly 24 hours before the original scheduled departure time.
- Confirm the name: Make sure the reservation matches the traveler’s government-issued ID or passport.
- Add travel numbers early: Add a Rapid Rewards number and Known Traveler Number before check-in when possible.
- Review the seat: Basic customers should check the assigned seat. Eligible customers can review or change seats before the applicable cutoff.
- Save the pass: Add the boarding pass to a digital wallet or print a paper copy.
- Check flight status: Review the gate, departure time, and alerts before leaving home and again after security.
- Allow airport time: Suggested arrival times vary by airport, season, and whether you are checking bags or traveling internationally.
- Carry documents: Keep the physical ID, passport, visa, child age document, or other required form where it is easy to reach.
Check-In for International Flights
International check-in requires more than a confirmation number. Every passenger, including a child or infant, needs the documents required for entry into and exit from each country on the itinerary. Southwest requires a valid passport book for international air travel. A passport card is not accepted for international travel by air.
Travelers who do not require a visa may be able to scan a passport or U.S. Permanent Resident Card with a mobile device during check-in. Otherwise, a Southwest agent or airport kiosk must verify the document before a boarding pass is issued. Passport verification and check-in must be completed by the international cutoff.
International Check-In Limitations
- Customers traveling to or from Aruba, Havana, or Punta Cana cannot check in online.
- Some international itineraries do not support a mobile boarding pass.
- If the first flight is operated by a partner airline, check in with that operating airline.
- International checked bags must be presented at the ticket counter, not only entered online.
- Visa, entry-form, health-document, and child-travel requirements vary by destination and citizenship.
Warning: A successful airline check-in does not prove that you meet a country’s entry rules. Review the destination’s official government or embassy requirements before travel and carry the original documents requested.
Troubleshooting Southwest Check-In Problems
The Reservation Cannot Be Found
Recheck the six-character confirmation number and enter the first and last name exactly as stored in the reservation. If the trip starts on a partner airline, use that airline’s check-in system. Contact Southwest or visit the ticket counter if the reservation still cannot be retrieved.
No Seat Was Assigned
Southwest may issue a security document when a seat cannot be assigned at check-in. Use it to pass through security, then see a gate agent for the seat assignment and final boarding pass.
The Mobile Boarding Pass Is Missing
Some passenger types and itineraries are not eligible for mobile passes. Try Southwest.com, a kiosk, or the ticket counter. International passengers may need document verification first.
You Cannot Add or Pay for Bags Online
Group, partner, and some business reservations may not support online bag check. Use a kiosk or ticket counter. Oversized and overweight charges also require airport handling.
You Missed the Check-In Cutoff
Go to a Southwest ticket counter or contact the airline immediately. Southwest states that passengers who attempt to check in after the cutoff must be rebooked on the next available flight.
In conclusion, a smooth Southwest check-in starts with knowing the current assigned-seat rules, completing check-in before the cutoff, saving the correct boarding document, and allowing enough airport time for security and baggage. Online and mobile options are fastest for most travelers, while kiosks and ticket-counter agents remain important for document checks, special requests, and troubleshooting.
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Frequently Asked Questions
What are the options for checking in for Southwest Airlines?
You can check in on Southwest.com, in the Southwest app, at a self-service kiosk where available, through a Skycap at select airports, or at the Southwest ticket counter.
How do I check in online for Southwest Airlines?
Select “Check in” on Southwest.com or in the app, then enter the confirmation number and a passenger’s first and last name. Review the flight, seat, bags, and boarding document, then save or print the boarding pass.
When does Southwest check-in open and close?
Check-in opens 24 hours before the flight’s original scheduled departure. It closes 30 minutes before domestic departure, 60 minutes before most international departures, and 75 minutes before flights departing Aruba.
Does Southwest still offer EarlyBird Check-In?
No. EarlyBird Check-In ended when Southwest changed to assigned seating for flights beginning January 27, 2026. Priority Boarding is the current paid option for earlier boarding when available.
Will Southwest assign my seat during check-in?
A Basic fare normally receives a Standard seat at check-in or at the gate. Choice, Choice Preferred, and Choice Extra fares include different levels of seat selection at booking, subject to availability.
Does Southwest charge a fee to check in at the airport?
Southwest does not list a separate service fee for checking in at a kiosk or ticket counter. However, checked-bag fees, paid seat choices, Priority Boarding, and other optional charges may apply.
Can I use a mobile boarding pass for an international flight?
Sometimes. You may need to scan a passport or Permanent Resident Card or have it verified at the airport first. Certain routes and passenger types are not eligible for online check-in or a mobile boarding pass.
How early should I arrive for a Southwest flight?
Arrival time varies by airport, travel period, baggage, and destination. Check Southwest’s airport information for the suggested time and arrive well before the final check-in, bag-drop, and gate cutoffs.
Sources
- Southwest Airlines: Online Check-In — check-in methods, 24-hour opening time, deadlines, and gate requirement
- Southwest Airlines: Assigned Seat Selection — current seat choices by fare and status
- Southwest Airlines: Boarding Process — boarding Groups 1 through 8 and current boarding rules
- Southwest Airlines: Checked Baggage Policy — bag fees, digital bag check, and baggage limits
- Southwest Airlines: International Travel Requirements — passport, visa, and destination-document guidance
- Transportation Security Administration: Acceptable Identification — REAL ID and other accepted domestic-travel identification