Best Carry-On for Southwest Airlines in 2026

Southwest Airlines has one of the most generous bag policies of any US carrier — and that changes the math on carry-ons significantly. Two free checked bags means you often don't need to maximize your carry-on at all. But open seating means boarding order determines whether you get overhead space, so the right strategy matters more than the right bag.

Southwest carry-on rules

Southwest allows 1 carry-on + 1 personal item + 2 free checked bags per passenger. The carry-on limit is 56×36×23 cm (22×14×9 in) with no weight limit.

No assigned seating means the A boarding group gets pick of overhead bins. The C group often finds bins full and ends up gate-checking. This is the real constraint Southwest passengers face.

Fare class boarding order:

• Business Select — first on (A1–A15 boarding positions)
• Anytime and WannaGetAway+ — early A-B positions via check-in priority
• WannaGetAway — boards later; bin space is not guaranteed

Our top picks

1. Travelpro Crew Classic 22-inch — Best overall for Southwest

Dimensions: 56×38×22 cm | Weight: 3.2 kg | Material: Nylon

The Travelpro Crew Classic is consistently rated the top pick among Southwest frequent flyers — partly because flight attendants use it. The slim 22 cm depth (under Southwest's 23 cm limit) and soft nylon shell mean it slides into full bins that refuse rigid bags. The retractable handle has a no-wobble locking mechanism that outlasts cheaper alternatives.

Pros:

• Slim depth fits tight bins when others won't
• Soft nylon compresses into nearly-full overhead bins
• Durable enough for weekly flyers

Cons:

• Basic interior organization — no dedicated laptop sleeve
• Width slightly over Southwest's 36 cm spec (compresses in practice)

2. American Tourister Moonlight 21-inch — Best budget pick

Dimensions: 54×38×23 cm | Weight: 2.8 kg | Material: Polycarbonate

The American Tourister Moonlight is the budget recommendation for Southwest travelers who want a hardshell without paying Away or Samsonite prices. At 2.8 kg, it's one of the lighter hard-sided options at this price point. The four-spinner wheel system handles airport floors well.

Pros:

• Budget-friendly entry price
• Lightweight for a hardshell at 2.8 kg
• TSA-approved lock built in

Cons:

• Polycarbonate more prone to scuffing than premium alternatives
• Interior compression system is basic
• No warranty comparable to premium brands

3. eBags TLS Mother Lode 22-inch — Best for maximizing capacity

Dimensions: 56×36×23 cm | Weight: 3.0 kg | Material: Nylon

The eBags Mother Lode is built specifically to use every cubic centimeter of the standard US carry-on allowance. The clamshell opening (instead of U-zipper) gives access to the full interior without routing around a frame. Multiple compartments help with organization that spinner suitcases typically lack.

Pros:

• Designed to use exactly the full carry-on allowance
• Clamshell opening gives complete interior access
• Organizational pockets for frequent packers

Cons:

• Discontinued in some markets — stock may be limited
• Lacks the sleek look of hardshell alternatives
• No spinner wheels

Tips for Southwest passengers

EarlyBird Check-In is worth it. For $15–$25, Southwest's EarlyBird Check-In automatically checks you in 36 hours before departure and typically gets you an A or early-B boarding position. For overhead bin access, this is often more valuable than upgrading your bag.

Use those free checked bags. Southwest's two free checked bags is a genuinely unusual policy among US carriers. If you're traveling for more than a weekend, checking a bag is free and reduces carry-on stress entirely. Save the carry-on space for valuables and electronics.

A-List status changes everything. Southwest A-List members (25+ qualifying flights per year) board in the A group automatically. If you fly Southwest regularly, the status benefit for bin access is one of the best perks in US domestic travel.

Personal item strategy. Southwest's personal item limit is generous enough to fit a full-size backpack under the seat. Pairing a slim carry-on with a well-organized backpack personal item often beats a single large carry-on for access and organization during the flight.