SquishometerAllegiant Carry-On Size & Bag Rules
Allegiant Air is a US ultra-low-cost carrier operating domestic leisure routes. All fares include one free personal item, while carry-on bags require a paid add-on or a higher fare bundle. Bag measurements include wheels, handles, and external pockets.
Personal Item
Under the seat
Length
18.0
in
Width
14.0
in
Height
8.0
in
Cabin Bag
Overhead bin
Length
22.0
in
Width
16.0
in
Height
10.0
in
All passengers get 1 free personal item (under the seat). A carry-on bag is not included and must be purchased as an add-on ($10–$75 online, up to $75 at the gate).
Will Your Bag Fit on Allegiant?
Enter your bag dimensions and we'll check Allegiant's allowances instantly.
Your bag dimensions
How to Measure
Length — tallest dimension, from floor to top of handle/wheels
Width — widest side, including external pockets
Depth — front to back, at the thickest point
Always measure the full external size — wheels, handles, and pockets count. Manufacturer specs often exclude these.
What is the Squish Score?
Not all bags are rigid boxes. A soft bag that is slightly over the limit can still squeeze into a gate sizer if the material compresses. We rate bags from 1–5:
Top Bags That Fit Allegiant
Bags that fit Allegiant's carry-on limits.
