United personal item size checker

United's free personal item can be up to 17 x 10 x 9 inches, including wheels and handles. A carry-on can be up to 22 x 14 x 9 inches and is free on most fares.

Checked October 2026. See the full United bag fees and rules.

Heads up: United's personal item is only 10 inches wide, narrower than most backpacks.

Quick answers

What size is a personal item on United?

Up to 17 x 10 x 9 inches, including wheels and handles.

What size carry-on does United allow?

Up to 22 x 14 x 9 inches.

Is a backpack a personal item on United?

Yes, if it fits within 17 x 10 x 9 inches and under the seat. Measure it packed, with straps and pockets.

Other airlines: Frontier, American, Allegiant, Southwest, JetBlue, Delta, Alaska.