Free Guide to Southwest Airlines Baggage Policies

Understanding Southwest Airlines' Free Checked Baggage Policy

Southwest Airlines stands out among major U.S. carriers for its baggage policy, which differs significantly from competitors like American Airlines, Delta, and United. Unlike many airlines that charge $30 to $40 for the first checked bag, Southwest includes two free checked bags as part of its standard fare for all passengers on domestic flights. This policy applies consistently across all fare types, from basic Economy to premium Business Select tickets.

The first checked bag must weigh no more than 50 pounds and have dimensions not exceeding 62 inches (length plus width plus height). The second checked bag must also weigh no more than 50 pounds with the same dimension limits. For example, a passenger flying from Denver to Las Vegas can check both a large suitcase and a duffel bag at no charge, whereas the same passenger flying on another airline might pay $60 total for those same two bags.

This policy extends to all domestic flights within the United States, Puerto Rico, and the U.S. Virgin Islands. The free baggage benefit does not apply to flights departing from or arriving at international destinations outside these areas. A customer flying from Phoenix to Mexico City, for instance, would not receive the two free checked bags benefit on that specific flight segment.

Southwest's baggage policy has remained relatively stable since the 1970s when the airline first introduced free checked bags as a competitive advantage. This consistency means travelers can reliably plan their packing and luggage needs without worrying about unexpected baggage fees. The airline's transparency about these policies differs markedly from some competitors, who embed baggage fees in their base fares rather than listing them separately.

Practical Takeaway: When booking a Southwest flight, budget-conscious travelers should factor in the two free checked bags as a significant advantage compared to other airlines, potentially saving $50 to $100 on a round-trip ticket by avoiding baggage fees charged by competitors.

Carry-On Baggage and Personal Item Guidelines

In addition to two free checked bags, Southwest passengers receive generous carry-on baggage allowances. Passengers may bring one carry-on bag and one personal item on board at no charge. Understanding the specific size and weight requirements helps avoid last-minute gate check situations, where overhead bin space becomes limited.

The carry-on bag must fit in Southwest's sizer, a physical frame located at airport gates that measures 22 inches in length, 14 inches in width, and 9 inches in depth. Most roller bags, hard-shell luggage, and soft-sided suitcases designed for carry-on travel fit within these dimensions. Popular brands like Samsonite Winview, Coolife, and Away all produce bags specifically designed to meet Southwest's measurements. A passenger boarding a flight from Orlando to Chicago can bring a standard carry-on roller bag plus a backpack or laptop case without additional charges.

The personal item allowance covers purses, backpacks, laptop cases, small messenger bags, and similar smaller items. Southwest does not weigh carry-on or personal items, unlike some airlines that have weight restrictions on these bags. A traveler could theoretically pack a carry-on bag and a personal item quite heavily without concern for weight limits, though overhead bin space may still present constraints on full flights.

Southwest's boarding process, which assigns boarding groups A, B, and C with zones 1-9, affects carry-on bag availability. Passengers boarding in earlier groups have more overhead bin space available. Early boarding customers, frequent flyers, and Business Select passengers board earlier and typically find abundant overhead bin space. Customers boarding in later groups might find overhead bins full and may need to gate-check bags, where the airline holds the bag at the gate and retrieves it upon arrival with no charge.

Restricted items still apply to carry-on bags. Items like lighters, sharp objects exceeding certain dimensions, and certain sporting equipment cannot be carried on board but may be checked baggage instead. A passenger with ski boots cannot bring them in the cabin but can pack them in checked bags without issue.

Practical Takeaway: Measure your luggage against Southwest's sizer dimensions before arriving at the airport, and consider arriving early or selecting an earlier boarding position if traveling on a full flight to maximize the likelihood of overhead bin space for your carry-on bag.

Special Items, Sports Equipment, and Oversized Baggage

Southwest's baggage policies extend beyond standard luggage to cover sports equipment, musical instruments, and other specialized items. Unlike airlines that charge $75 to $150 for checked sports equipment, Southwest generally includes these items within the two free checked bags allowance, provided they meet weight and dimension requirements.

Golf clubs represent one of the most common special items checked by Southwest passengers. A standard golf bag with 14 clubs typically weighs around 35 pounds and easily fits within the 50-pound and 62-inch dimension limits for checked bags. A golfer traveling from Phoenix to Scottsdale for a tournament can check golf clubs at no charge as one of the two free bags. Similarly, ski equipment, including skis, boots, and bindings in a ski bag, usually weighs between 25 and 35 pounds and qualifies for the free baggage allowance.

Bicycles present a different scenario. A bicycle in a bike bag or bike case counts as one checked bag and can be transported for free if it meets the weight and dimension requirements. However, bicycles often come very close to or exceed the dimension limits without proper packing. A cyclist should pack the bike in a rigid bike case or padded bike bag, removing pedals and turning handlebars to reduce dimensions.

Musical instruments like guitars, violins, and saxophones can typically be carried on board as personal items if they fit in the cabin, or checked for free if packed in protective cases. A musician traveling with a full-size acoustic guitar should verify it fits within carry-on dimensions or pack it in a hard case for checked baggage.

Items exceeding the 50-pound weight limit or 62-inch dimension limit incur fees. Oversized bags weighing between 51 and 100 pounds cost $75 for the first overweight bag and $100 for each additional overweight bag. Items exceeding 100 pounds cannot be accepted as checked baggage on Southwest flights. This affects travelers with large instrument cases, extensive equipment, or unusually heavy items.

Fragile items like glassware, artwork, or collectibles should be packed carefully within checked bags. Southwest does not carry liability insurance for checked baggage contents, though passengers can purchase additional coverage through third-party baggage insurance providers if desired.

Practical Takeaway: Measure and weigh specialized items like sports equipment before travel to confirm they fit within standard checked bag limits, and use protective cases or bags to ensure items arrive undamaged.

International Flights and International Destination Rules

Southwest's free baggage policy applies only to flights operating within the continental United States, Hawaii, Puerto Rico, and the U.S. Virgin Islands. International flights departing the United States for Canada, Mexico, the Caribbean (excluding Puerto Rico and the U.S. Virgin Islands), Central America, South America, or other countries operate under different baggage rules.

For flights to most international destinations, Southwest typically allows one free checked bag weighing up to 50 pounds with dimension limits of 62 inches. A second checked bag costs $75. This represents a significant change from the two free bags available on domestic flights. A family of four traveling from San Antonio to Cancun on Southwest would pay $300 ($75 per person for four people's second bags) compared to the same family traveling to Las Vegas domestically with no second bag fees.

Flights to specific Caribbean destinations like Aruba, Curacao, and Jamaica may have different baggage allowances. Southwest's website displays destination-specific baggage policies when searching for international routes. Passengers should verify the exact baggage allowance for their specific international destination before booking or packing.

Oversized and overweight baggage fees apply on international flights just as they do domestically. Additionally, some international destinations have local regulations or airline partner requirements that may affect baggage handling. For example, connecting international flights operated by partner airlines may have their own baggage restrictions that supersede Southwest's stated policies.

Return flights from international destinations back to the United States follow the same international baggage rules (one free checked bag) rather than reverting to the domestic two-bag policy. The free baggage policy only applies when the flight departs from and arrives at eligible U.S.