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Blue suitcase against pale background with the words "Is Southwest Strict on Carry-on Size" in blue.

Southwest Carry On Size – Strict?  What to Expect

Know before you go.  Boarding pass?  Check.  But what about that small suitcase or oversized items?  Even those golf clubs.  Making the most of your Southwest airlines flight starts with knowing the rules for each piece of carry-on luggage. Traveling with Southwest Airlines can be a pleasant experience, especially when it comes to their generous carry on luggage size limits. However, passengers may still wonder how strict the airline is with its carry on size policies. This article provides an in-depth look at Southwest Airlines’ carry on size restrictions, weight limits, and other pertinent information to help you avoid any potential issues during your journey. By understanding these guidelines, you can ensure a smooth and hassle-free flight experience.

Southwest Airlines Carry On Size Restrictions and Dimensions

Southwest Airlines is known for its more lenient carry on size limits compared to other major US airlines. The airline permits a carry on bag with bag dimensions of 10 x 16 x 24 inches. In comparison, most other US airlines have a limit of 9 x 14 x 22 inches, which means that Southwest allows an extra inch in height, two inches in width, and two inches in length.

The generous size limit allows passengers to pack approximately 17 liters more in their carry on bags, giving them a theoretical maximum capacity of around 57 liters. In addition to the main carry on bag, Personal item size restrictions: Southwest also permits a personal item with dimensions of 18.5 x 8.5 x 13.5 inches. Just your average tape measure will quickly let you check to see if you are over the maximum dimensions.

It is worth noting, however, that Southwest’s lenient carry on size limits may not always be advantageous, as it may lead to issues with overhead bin space. Therefore, it is essential to adhere to the size restrictions to ensure a smooth travel experience.

Two red hard-sided wheeled suitcases. On finished pavement with one male leg seen beside suitcase.

Southwest Airlines Checked Luggage Allowance

One of the reasons why passengers may not be overly concerned with Southwest’s carry on size strict policy is the airline’s complimentary checked baggage allowance. No additional passenger fee for a piece of baggage (the first 2) probably lets them go easier on the size. Southwest allows passengers to check in two bags for free, as long as they adhere to the size and weight limits.

This means that even if your carry on bag does not meet the size restrictions, you can simply check it in for free, eliminating the need to worry about additional baggage fees or additional charges. However, it is still crucial to ensure that your large bags and duffel bags falls within the carry on size allowance to avoid potential inconveniences such as lost or damaged baggage.

How Strict is Southwest About Carry On Size?

According to various passenger experiences, Southwest is not overly strict about enforcing its carry on size limits. This may be attributed to the fact that passengers with oversized bags can check their luggage in for free, eliminating the need for the airline to scrutinize every carry on bag.

Furthermore, since most passengers’ carry on bags are likely to be within the size limits set by other major airlines, they will also be within Southwest’s more generous limits. As a result, Southwest may not feel the need to be overly strict with its carry on size policies.

However, it is essential to remember that not adhering to the size restrictions may lead to issues with overhead bin space, causing delays and inconveniences for both passengers and airline staff.  If your bag is a tight fit, you will have scuffed and dinged up luggage trying to fit in the overhead compartment.

Southwest Carry On Weight Limit

Southwest Airlines does not impose specific weight restrictions for carry-on baggage. However, there is a weight limit for checked bags, which is 50 pounds. If you mistakenly pack an oversized carry on bag, you may be required to check it in, and you will need to ensure that it weighs less than the 50-pound limit to avoid any additional bag fees for overweight items and larger bags.

Red and black backpack sits on floor. Gray floor with reflection of backpack.

Southwest Personal Item Size

Southwest passengers are allowed to bring a personal item on board, with dimensions of 18.5 x 8.5 x 13.5 inches. This personal item bag must be able to fit under the seat in front of you and can include items such as a purse, laptop bag or smaller bags, or small backpacks.

It is essential to make the most of your personal item allowance, as it can provide you with an additional 31 liters of packing space. By maximizing both your carry on bag and personal item, you can ensure a comfortable and convenient travel experience.

Best Bags for Southwest Carry On Size Guidelines

While Southwest Airlines offers generous carry on size limits, it is still recommended to choose a carryon bag size that falls within the size requirements of most airlines. This ensures that your carry on bag is versatile and can be used across various airlines without any issues.

For a hard-sided suitcase, consider the Kenneth Cole Reaction 20-Inch Carry-On, which measures 21.75 x 14.5 x 8.5 inches. For a soft-sided luggage set, the Rockland Fashion Soft-Side Upright Luggage Set includes a carry on and a personal bag, allowing you to maximize your packing space without incurring additional fees.

Infant Baggage Allowance and Car Seats

Southwest Airlines allows parents traveling with infants to check in one stroller and one Children Restraint System (CRS) or car seat per child free of charge. However, the airline will not assume liability for any damage to these child seats, so it is essential to take care of your infant’s belongings while traveling.

Overhead bin with several suitcases on an airplane.

Final Thoughts on Southwest Carry On Size Being Strict Guidelines

In conclusion, Southwest Airlines is known for its lenient carry on size limits and policies, making it an attractive option for passengers who need extra packing space. However, it is essential to adhere to the size restrictions to avoid potential inconveniences and ensure a smooth travel experience.

By understanding Southwest’s carry on size strict policies, packing appropriately, and choosing the right luggage, you can have an enjoyable and hassle-free journey with the airline.  Skip the (drama) line by knowing before you go.

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The Patricks

Mike and Tracey Patrick are adventurers at heart with a love of all things travel. They believe life and every, single day should be an adventure. You can join them on them on their travel blog that offers unique destinations and guides to make every vacation an adventure.

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