American Airlines: Personal Item and Cabin Bag Sizes
American Airlines publishes a personal item allowance of 45.7 × 35.6 × 20.3 cm, which is 18.0 × 14.0 × 8.0 in, and a cabin bag allowance of 55.9 × 35.6 × 22.9 cm — 22 x 14 x 9 in, wheels and handles included. A backpack qualifies as either, provided it measures within the figure once packed.
What American Airlines allows
| Personal item | 45.7 × 35.6 × 20.3 cm (18.0 × 14.0 × 8.0 in) |
|---|---|
| Cabin bag | 55.9 × 35.6 × 22.9 cm (22.0 × 14.0 × 9.0 in) — 22 x 14 x 9 in, wheels and handles included |
Allowances differ by carrier, by fare and sometimes by aircraft, and they change without notice. Every figure here is the one the carrier published when this page was last reviewed; check the measurement on your own booking before you fly.
American publishes 18 by 14 by 8 inches for the personal item and 22 by 14 by 9 for the carry-on, and is among the more relaxed of the large US carriers in how the smaller figure is applied. On Basic Economy the personal item is the only guaranteed free bag.
Eighteen by fourteen by eight is the convention most personal-item backpacks are designed to, which makes American one of the easier carriers to pack for.
Which of these backpacks fits
| Model | Dimensions | Personal item | Cabin bag |
|---|---|---|---|
| Travel Backpack 30 L | 43 × 30 × 20 cm | Fits, 0.3 cm to spare | Fits, 2.9 cm to spare |
| Vacuum Backpack 18×14×8 | 47 × 33 × 20 cm | Cabin bag, 1.3 cm over the under-seat figure | Fits, 2.6 cm to spare |
| Vacuum Backpack 40 L | 40 × 30 × 20 cm | Fits, 0.3 cm to spare | Fits, 2.9 cm to spare |
The comparison sorts both sets of figures and matches largest side to largest side, which is how a bag actually goes into a sizer. Models are listed only where the manufacturer publishes all three dimensions.
The Travel Backpack 30 L is the straightforward choice for American Airlines: its published dimensions sit inside the under-seat figure with margin to spare. Pack it so the sides stay flat and a sizer is a formality.
How a sizer is actually used
A gate sizer is a rigid frame, and the bag has to go into it without being pressed. Depth is the dimension that fails first, because a soft bag packed full becomes round in the middle whatever its flat measurements say. That is the single argument for compression on a carrier that measures: air taken out of bulky clothing comes out of the depth, which is exactly where the margin is thinnest. How the box is used, and which dimension it catches, is set out in the personal item size guide.
American Airlines baggage FAQ
What size is a personal item on American Airlines?
45.7 × 35.6 × 20.3 cm, or 18.0 × 14.0 × 8.0 in. Check the figure on your own booking before flying, because allowances change without notice.
Does a backpack count as a personal item on American Airlines?
Yes, provided it measures within the published figure once packed and slides fully under the seat in front of you. Shape matters as much as capacity.
What is the cabin bag allowance on American Airlines?
55.9 × 35.6 × 22.9 cm — 22 x 14 x 9 in, wheels and handles included.
Does vacuum compression help at the gate?
It reduces the volume of bulky clothing, which mostly comes out of the depth of a packed bag. It does not reduce weight, so it helps with a sizer and not with a scale.