Southwest Will Now Offer Plus-Size Passengers a Free Extra Seat

Southwest Airlines has reversed course on one of its most controversial recent policy changes — and plus-size travelers are the direct beneficiaries.

The Dallas-based carrier announced Wednesday that passengers who require additional seat space are no longer required to purchase an extra seat in advance. Instead, airport agents are now empowered to provide an additional seat at no extra cost when adjacent seats are available on the flight. The change took effect late last week.

"On flights where adjacent seats are available, our agents at the airport are empowered to provide an additional seat at no extra cost to Customers who require one," the airline said in a statement. "If another seat is not available, we will work to accommodate the Customer on a later flight."

A Policy That Went Back and Forth

The reversal closes a loop that began last year. For decades, Southwest had one of the most passenger-friendly "Customer of Size" policies in the airline industry — plus-size travelers could either request a free additional seat at the airport on the day of travel or purchase one in advance with a guaranteed refund. The policy made the airline a preferred carrier for many larger travelers.

That changed in January 2026, when Southwest overhauled the policy alongside its switch from open seating to assigned seating. Under the new rules that took effect January 27, passengers who could not fit comfortably within one seat were required to purchase an additional seat in advance, with refunds only granted under stricter conditions. The change drew immediate backlash from plus-size travelers and disability advocates who argued it placed an unfair financial burden on passengers who couldn't always predict in advance whether a neighboring seat would be available.

Southwest said the policy adjustment followed an extensive review and that it will continue refining the process "to create a more consistent and seamless travel experience for customers who require an additional seat."

What the New Policy Actually Means

Under the updated approach, passengers who need extra space no longer have to purchase a second seat at booking. When they arrive at the airport, gate agents can assign an adjacent seat at no charge if one is available. If the flight is full and no extra seat can be provided, Southwest will work to rebook the passenger on a later flight where space exists.

Southwest is still encouraging passengers who anticipate needing extra space to book a second seat in advance — but that is now a recommendation rather than a requirement. "We continue to encourage Customers who need an additional seat to book it in advance to help alleviate any last-minute inconvenience at the airport," the airline said.

A Year of Big Changes at Southwest

The plus-size policy update is the latest in a series of significant changes Southwest has made in the past year as the airline overhauls its business model. The switch to assigned seating in January 2026 ended one of the most distinctive features of Southwest's customer experience — the open boarding system it had maintained for decades. From May 28, 2026, Southwest also began charging for checked luggage, ending a decades-long practice that had helped distinguish the airline from its competitors. Only top-tier loyalty members, business-class travelers, and holders of the airline's credit card are exempt from the new baggage fees.

For plus-size travelers, Wednesday's announcement walks back one of the more unpopular elements of that overhaul — restoring something closer to the flexibility the airline's previous Customer of Size policy had provided.

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