Southwest Airlines carry-on size & baggage allowance

Everything you can bring on a Southwest Airlines flight — the free cabin bag, what a bigger bag costs, hold prices and whether your case will fit.

Key facts

Free cabin bag
61×40×28 cm
No fee on every fare
Larger cabin bag
61×40×28 cm
Included with your fare
Hold luggage
23 kg
From Free

Good to know

  • Generous size allowances
  • No weight limit
  • 2 free checked bags

Allowances & fees

Bag typeFree cabin bag
Max size61×40×28
Weight
FromFree
Bag typeHold luggage
Max size158 cm total
Weight23 kg
FromFree

* No stated weight limit, but you must be able to lift it into the cabin unaided. Prices vary by route and season.

Will my bag fit?

No ruler? Check your bag against Southwest Airlines's free cabin allowance using something you already carry.

Gear that helps you stay free

We packed with these — independent picks, not ads
Packing cubes (set of 6)
Fitting more in a small cabin bag
Digital luggage scale
Staying under the weight limit
Vacuum compression bags (8)
Bulky winter kit

Product links go to Amazon and may be affiliate links — this never changes what we recommend or the prices you pay.

Flying with a dog on Southwest Airlines?
See what's coming
Not flying — going by train or road?
See what's coming

FAQ

Southwest Airlines lets you bring a free cabin bag up to 61×40×28 cm. It has to fit under the seat in front of you.

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Pack smart for your Southwest Airlines flight

Use our free calculator to fit everything inside Southwest Airlines's baggage limits.

Open the packing calculator