Southwest Airlines will make big changes to its seating policies starting January 27, 2026. For the first time in its history, the airline will replace its well-known open seating system with assigned seats. At the same time, it will introduce a new extra-seat policy for plus-size passengers, requiring travelers who need more room to purchase a second seat in advance.
This is a major shift for Southwest, a company famous for simplicity and flexibility. The changes will affect how passengers book flights, choose seats, and plan their travel experience in the years ahead.
End of Open Seating
For decades, Southwest operated differently from most airlines. Instead of assigned seats, it used a boarding group system. Passengers checked in early, boarded in groups, and chose any open seat on the plane. Many travelers liked this first-come, first-served approach because it felt fair, quick, and sometimes fun.
Starting in January 2026, this tradition will end. Southwest will assign seats at the time of booking or allow travelers to select them later through the airline’s app. Families and groups will no longer need to rush to check in early to sit together. Boarding may also become smoother since everyone will know their seat location before stepping on the plane.
New Extra-Seat Rule for Plus-Size Travelers
Alongside assigned seating comes a clear policy for passengers who need more than one seat for comfort and safety.
Beginning January 27, 2026, travelers who do not fit within the armrests of a standard seat must purchase an additional seat in advance. Buying both seats on the same reservation will make sure flight crews can plan seating and boarding more efficiently.
If travelers wait until the day of travel and the flight is already full, they may be asked to rebook on a later flight with available seating.
Refund Options and Conditions
Southwest says passengers may be able to get a refund for the cost of the extra seat, but certain conditions apply:
- The flight must not be completely full at departure.
- Both seats must be purchased on the same reservation and in the same fare class.
- Refund requests must be submitted within 90 days after the flight date.
If these requirements are not met, the additional seat may not be refundable. This means travelers will need to plan ahead carefully and keep all booking information organized.
How the Passenger Experience Will Change
The move to assigned seating will bring a different boarding experience for everyone. Families will no longer need to split up or rely on strangers to switch seats. Passengers will know exactly where they are sitting before boarding, reducing stress at the gate and inside the cabin.
On the other hand, some loyal Southwest fans loved the old open seating style because it rewarded early check-in and allowed more flexibility. It may take time for these passengers to get used to the new system.
Tips for Plus-Size Travelers
For travelers who may need an extra seat, planning ahead will be more important than ever:
- Check seat sizes before booking so you can choose seats that meet your comfort needs.
- Book both seats together in the same reservation to keep refund options open.
- Arrive early to talk with gate agents if you have questions about seating, seatbelt extenders, or special equipment.
Booking in advance will give travelers more control and reduce the chance of last-minute problems if flights are full.
Impact on Travel Planning
These changes mean passengers will need to think differently about booking flights on Southwest in 2026. Prices could vary based on seat type or location, and busy travel times like holidays will make refund conditions harder to meet for extra seats.
Travelers booking early will have the best selection of seats and the highest chance of refund eligibility for additional seats if they are needed.
Why Southwest Is Making These Changes
Airlines are constantly looking for ways to improve efficiency while maintaining safety and comfort. Assigned seating helps balance aircraft weight, keeps families together, and speeds up boarding times.
A clear extra-seat policy also ensures fairness and sets expectations for travelers, reducing the chance of mid-boarding conflicts about space or seating.
Passenger Reactions
Reactions to the changes have been mixed. Some passengers welcome the clarity and comfort of assigned seating. Others feel the extra-seat rule may create financial challenges for travelers who need more room.
As the policy launch date approaches, passengers will be watching for updates on seat maps, refund procedures, and boarding group changes.
Bottom Line
On January 27, 2026, Southwest Airlines will move to assigned seating and require plus-size travelers who need more space to purchase an extra seat in advance. Refunds will be available only if certain conditions are met, such as the flight not being full and seats being purchased in the same booking.
For passengers, the key to a smooth trip will be planning ahead: book early, know your seating needs, and keep travel records organized. With these changes, Southwest aims to improve comfort, boarding speed, and the overall flying experience—while moving away from the casual style that once made it unique.
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