How Strict is Southwest Airlines with Carry-On Size?

March 19, 2025
baggage policy

When preparing for a flight with Southwest Airlines, understanding their baggage policies is essential to ensure a smooth and hassle-free experience. Many travelers wonder, "How strict is Southwest with carry-on size?" This guide breaks down the airline's policies on carry-on size, carry-on weight, and checked baggage dimensions to help you avoid surprises at the airport.

Southwest Airlines Carry-On Size Policy

Southwest Airlines allows passengers to bring one carry-on bag and one personal item onboard for free. However, the carry-on must meet specific size requirements to fit in the overhead bin.

  • Carry-On Size Limit: 24 x 16 x 10 inches (61 x 40 x 25 cm) including handles and wheels.
  • Personal Item Size Limit: Must fit under the seat in front of you (e.g., a purse, laptop bag, or backpack).

How Strict is Southwest?

Southwest is generally lenient with slight deviations from the specified dimensions. However, if your carry-on is noticeably larger, you may be required to check it at the gate. To avoid fees or delays, measure your bag beforehand to ensure it meets the airline's guidelines.

Southwest Carry-On Weight Policy

One benefit of flying Southwest Airlines is that they do not impose a specific carry-on weight limit. As long as your carry-on bag fits within the size guidelines and you can lift it into the overhead bin without assistance, it is generally allowed onboard. This flexible approach makes Southwest a traveler-friendly option for those carrying heavier items.

Southwest Checked Baggage Size and Allowance

Southwest Airlines is known for its generous checked baggage policy. Each passenger is permitted to check two bags for free, which is a rare advantage compared to other U.S. airlines.

  • Checked Baggage Size: Maximum dimensions: 62 inches (length + width + height).
  • Weight Limit: 50 pounds (23 kg) per bag.

Excess Baggage Fees:

  • $75 per bag for items exceeding 50 lbs.
  • $75 for bags larger than 62 inches.
  • Additional fees apply for more than two checked bags.

Tips to Ensure Your Bag Meets Southwest's Requirements

  1. Measure and Weigh Your Bags: Use a measuring tape and a luggage scale to verify your carry-on and checked baggage dimensions.
  2. Pack Smart: Distribute weight evenly to avoid exceeding the 50-pound limit for checked baggage.
  3. Arrive Early: Early arrival allows time to address any baggage issues without delaying your flight.
  4. Use Approved Luggage: Invest in airline-approved carry-on and checked bags to meet Southwest's guidelines.

Conclusion

Southwest Airlines offers one of the most generous baggage policies, allowing two free checked bags and flexible carry-on allowances. While they are not overly strict with minor deviations, it is best to follow the Southwest carry-on size policies to avoid any last-minute inconveniences.

By understanding Southwest Airlines' baggage policy, you can pack confidently and enjoy a smooth journey. Always check the latest guidelines on Southwest's official website before your trip for any updates or changes.

Jane copper

Hi, I am Jane Copper, a passionate travel enthusiast and content writer based in New York City. I specialize in sharing travel tips, flight deals, and booking management services through my blog, My goal is to help fellow travelers find affordable flights and make the most of their journeys. When I’m not writing, you’ll often find me exploring new places, experiencing different cultures, and capturing the beauty of the world around me.

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