AAChecked 20 Oct 2026 against aa.com

American Airlines cabin bag size 2026

On American Airlines’ cheapest fare (Basic Economy) you can bring one free under-seat bag up to 45 × 35 × 20 cm. A cabin bag up to 56 × 36 × 23 cm is included too.

Check my bag against American Airlines

Free under-seat bag: 45 × 35 × 20 cmOn Basic Economy
Overhead cabin bag: 56 × 36 × 23 cmIncluded on Basic Economy

Check your bag against American Airlines’ limits

Airline

Your ticket

Not sure? Pick the cheapest. It has the strictest rules.

Basic EconomyMain CabinPremium cabins

Which bag

Under-seat bagfits under the seat in frontIncluded45 × 35 × 20 cmCabin baggoes in the overhead lockerIncluded56 × 36 × 23 cm

Sizer · American Airlines · Under-seat

45 × 35 × 20 cm

Your bag’s size

Measure the outside, including wheels, handles and pockets. Tap + or − , or hold to keep going.

Height

Width

Depth

Weight(optional)

American Airlines cabin bags by fare

What each ticket type includes, as published by American Airlines.

American Airlines cabin baggage allowance by fare
Fare	Under-seat bag	Cabin bag
Basic Economy Boards last (usually Group 9), when lockers are often full: plan to check your cabin bag Free checked bag only for status members, eligible cardmembers and some long-haul regions	Included 45 × 35 × 20 cm Must fit under the seat in front: 18 × 14 × 8 in. No weight limit.	Included 56 × 36 × 23 cm 22 × 14 × 9 in, including wheels and handles.
Main Cabin	Included 45 × 35 × 20 cm 18 × 14 × 8 in, such as a small handbag. No weight limit.	Included 56 × 36 × 23 cm 22 × 14 × 9 in with wheels and handles. Must fit the sizer and the locker or under the seat. No weight limit.
Premium cabins	Included 45 × 35 × 20 cm 18 × 14 × 8 in.	Included 56 × 36 × 23 cm One cabin bag and one under-seat bag in every cabin. 22 × 14 × 9 in.

American Airlines measures the whole bag, including wheels, handles and pockets.

If your bag is too big at the gate

Your cabin bag must fit the airport sizer. If the overhead lockers are full or restrictions apply, it may be checked at the gate.

It’s almost always cheaper to add the right bag when you book or online before you fly.

Other American Airlines cabin rules worth knowing

American Eagle flights (except the Embraer ERJ-175): bags bigger than an under-seat bag are checked free at the gate and returned on the jet bridge.
Soft-sided garment bags: up to 51 in (130 cm) in total length + width + height.
Not counted: 1 nappy bag for each child, a breast pump, small cooler of breast milk, child safety seats, pushchairs and medical or mobility aids.
Fully collapsible pushchairs under 20 lb that fit in the overhead locker can come on board.
If your cabin bag has to be checked, take out any batteries and e-cigarettes.

Power banks on American Airlines

American Airlines allows up to 2 power banks of up to 100 Wh each, hand luggage only. You can use one if it's in reach and in view, but not recharge it from seat power.

Power-bank rules and Wh calculator

Liquids depend on the airport

The airline doesn’t set the liquids limit. The departure airport’s security does. Some now allow up to 2 litres.

Liquids rules by airport

American Airlines cabin bag questions

What size is American Airlines’ free under-seat bag?

45 × 35 × 20 cm on the Basic Economy fare. It must fit under the seat in front of you.

What size cabin bag can I take on American Airlines?

Up to 56 × 36 × 23 cm. It’s included with Basic Economy, Main Cabin and Premium cabins.

Do American Airlines’ size limits include wheels and handles?

Yes. The limits are for the whole bag, including wheels, handles and side pockets.

What happens if my bag is too big for American Airlines?

Your cabin bag must fit the airport sizer. If the overhead lockers are full or restrictions apply, it may be checked at the gate.

Can I take a power bank on American Airlines?