Understanding the Carry-On Weight Limit on Southwest Airlines

When preparing for a flight, one of the most common concerns among travelers is understanding the airline’s carry-on baggage policy—especially when it comes to size and weight limits. For those flying with Carry On Weight Limit Southwest, the good news is that the policy is among the most generous and straightforward in the industry.

Whether you're a frequent flier or a first-time Southwest customer, knowing what to expect with carry-on luggage can make your journey smoother and stress-free. In this blog, we explore everything you need to know about Southwest’s carry-on rules—especially regarding weight limits, what counts as a carry-on, and tips to make the most of the policy.

What Is the Carry-On Weight Limit on Southwest?

One of the most notable features of Southwest Airlines’ carry-on policy is that there is no official weight limit for carry-on bags. Unlike many other carriers that impose strict weight caps—often 15 to 22 pounds—Southwest focuses more on size and personal responsibility.

While your bag must fit within the allowed dimensions, you are not required to weigh it at check-in or boarding. Instead, passengers are expected to be able to lift and store their own luggage in the overhead bin without assistance.

Carry-On Size Requirements

Though there’s flexibility on weight, Southwest does have strict size limitations for carry-on bags. The maximum dimensions allowed for a carry-on are:

1. 24 inches (L) x 16 inches (W) x 10 inches (H)
   (Includes wheels and handles)

If your bag exceeds this size, you may be asked to check it at the gate. Fortunately, Southwest offers two free checked bags per passenger, making it easier to adjust if your carry-on is oversized or too bulky for the cabin.

Personal Item Allowance

In addition to one carry-on bag, Southwest allows one personal item. This could be a laptop bag, backpack, purse, camera case, or other similarly sized item. The personal item must be small enough to fit completely under the seat in front of you.

Like carry-ons, there is no specific weight limit for personal items, but the airline expects passengers to use common sense and bring items they can comfortably handle.

You Must Be Able to Lift Your Bag

Since Southwest doesn’t enforce a carry-on weight limit, it puts the responsibility on the traveler to ensure the bag is manageable. You should be able to lift your carry-on into the overhead bin without help. If you're unable to do so safely, the crew may require the bag to be gate-checked.

This policy is designed to streamline the boarding process, reduce delays, and avoid injuries—ensuring both passenger and crew safety.

What Counts as a Carry-On?

Acceptable carry-on items typically include:

1. Rolling suitcases (within size limits)

2. Duffel bags

3. Garment bags

4. Small wheeled luggage

5. Hard-shell or soft-shell bags

Your personal item might include:

1. Tote bags

2. Small backpacks

3. Laptop sleeves

4. Briefcases

5. Cross-body bags or purses

Items like umbrellas, food containers, books, or jackets typically do not count toward your carry-on allowance unless stored in a separate bag.

When Bags Might Be Gate-Checked

Although Southwest is lenient on weight, gate agents may still ask passengers to gate-check their carry-on bags if:

1. The bag exceeds size restrictions

2. Overhead bin space is full

3. The bag cannot be lifted without assistance

4. You board later in the process and space has run out

Fortunately, gate-checked bags are transferred free of charge and typically returned at your destination’s baggage claim or jet bridge.

Travel Tips for Carry-On Success

To avoid surprises at the airport and make your carry-on experience easier, consider these tips:

1. Use a soft-sided bag – These are easier to squeeze into tight spaces.

2. Test-lift your bag at home – If you can’t lift it easily, lighten the load.

3. Wear bulky items – Coats and boots take up valuable space; wear them during travel.

4. Use packing cubes – They help you organize and maximize space.

5. Arrive early – Early boarders have the best shot at overhead bin space.

Final Thoughts

Southwest Airlines’ carry-on weight policy is one of the most passenger-friendly in the airline industry. By focusing on size rather than weight, Southwest allows travelers greater flexibility while still encouraging personal responsibility. As long as your bag fits in the overhead bin and you can lift it yourself, you’re good to go.