--- title: "Southwest Airlines Baggage & Ticket Policies 2026" description: "Southwest Airlines baggage, seat, change and pet policies for 2026 — two free checked bags, carry-on rules, Wanna Get Away fares, seating changes and pet summary." url: "https://travelshifu.com/airlines/southwest/" iata: "WN" type: "airline policy" source: "TravelShifu" --- # Southwest Airlines Baggage & Ticket Policies 2026 ## What are Southwest Airlines baggage and ticket policies in 2026? Southwest remains the US major most travellers associate with two free checked bags and simpler domestic economics. Fare brands still decide change flexibility, and seating products have been in transition — do not rely on decade-old open-seating folklore. Price the all-in total against JetBlue and the big three. This page summarises Southwest (WN) bags, seats, changes and pets for July 2026 planning. The airline’s help centre and your confirmation beat any nostalgic forum thread. Cross-check [airline carry-on sizes 2026](/guides/airline-carry-on-sizes), [airline baggage fees compared 2026](/guides/airline-baggage-fees-compared), [flight delay compensation rights](/guides/flight-delay-compensation-rights), and compare WN with [JetBlue](/airlines/jetblue) on [flight deals](/deals/flight-deals). Figures below are illustrative planning bands as of July 2026. Fare families and Rapid Rewards status rewrite the numbers — confirm on the airline site for your PNR before you pay or pack. ## What is the Southwest carry-on size and weight limit? Southwest typically allows one carry-on that fits the published sizer — commonly discussed around 24×16×10 inches including handles and wheels — plus a personal item under the seat. Weight is rarely the drama on WN metal; bin space on full holiday flights still is. Soft bags that compress help. If you connect onward to an international partner or a separate ticket the same day, pack for that carrier’s kilogram rule, not only Southwest’s sizer. Keep medicines, devices and a change of clothes in the personal item so a voluntary gate-check cannot strand essentials when bins fill. ## How much does Southwest charge for checked bags? Most Southwest tickets still include two free checked bags within published size and weight limits — the standout value versus Delta, United and American domestic bag fees. Overweight, oversize and extra bags beyond two attract fees. Weight caps commonly discussed near 50 lb / 23 kg per bag. This two-bag inclusion is why Southwest wins many family and sports-gear maths problems even when the base fare looks higher. Confirm live limits and any brand exceptions before you assume the folklore still matches your PNR. Compare the all-in bag advantage against other US carriers on [airline baggage fees compared 2026](/guides/airline-baggage-fees-compared). ## What are Southwest change and cancellation fees? Southwest historically avoided traditional change fees, but fare brands such as Wanna Get Away versus higher products still decide whether you receive travel credit, refundability and how fare differences work. Same-day options and Rapid Rewards awards follow separate charts — read your brand. Wanna Get Away-style fares are usually the least flexible for cash refunds; higher brands and Business Select-style products are kinder. Airline-led cancellations open rebooking or refund pathways under Southwest policy. If a delay hits a qualifying UK/EU routing on a codeshare or rare international scenario, map rights via [flight delay compensation rights](/guides/flight-delay-compensation-rights) — most WN flying is domestic US. ## How much does Southwest seat selection cost? Southwest seating has been evolving away from pure open boarding folklore — some tickets and products now involve assigned or earlier selection options with fees. EarlyBird-style and business-select products historically bought priority. Confirm the live seat map for your PNR rather than assuming 2019 rules. Families should treat seating certainty as a paid product when the fare brand does not include it. Illustrative EarlyBird or assigned-seat fees move by length of haul and demand. If your confirmation still references boarding positions, screenshot it — operational transitions create mixed passenger expectations. ## What is the Southwest pet policy? Southwest generally allows small cats and dogs in the cabin on selected flights when the carrier fits under the seat and a pet fare is paid, with limits per flight. Checked pet travel is not the Southwest leisure model. Service animals follow a separate process. Book pets early — space caps are real on dense California and Florida banks. Destination hotel and local animal rules are still yours to clear even on a simple domestic hop. ## What is the practical bottom line before you buy Southwest? Start every comparison with two free checked bags baked into the Southwest total, then add any seating certainty product you will actually buy. Compare that honest number with JetBlue, Delta, United and American on the same dates — headline fares lie when bags matter. Re-read seating rules for your exact PNR; do not trust decade-old open-seating advice blindly. Disruption steps: Southwest app first, keep receipts if care applies, and use [flight delay compensation rights](/guides/flight-delay-compensation-rights) only when a qualifying legal framework actually covers your routing. 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