Will This Bag Fit
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Bags that fit Allegiant Air

Allegiant Air's free personal item is 18 × 14 × 8 in (45 × 35 × 20 cm). The carry-on limit is 22 × 16 × 10 in (55 × 40 × 25 cm). We checked 1,046 bags against both, using each brand's own published size. Wheels count; soft bags get no more than 1 cm of squeeze.

Rules checked 5 October 2026 · Allegiant Air rules and fares

Personal item: 249 fit, 210 tight

Personal-item bag (165)

+ 153 more personal-item bags — search them in the checker.

Tote (68)

+ 56 more totes — search them in the checker.

Duffel / weekender (9)

Travel backpack (5)

Under-seat roller (2)

Tight: within 1 cm on at least one side

These pass only if you pack them flat or the bag gives a little. Hard-shell bags in this list are exactly at the limit.

Carry-on: 221 fit

Duffel / weekender (78)

Carry-on suitcase (27)

Travel backpack (116)

Not on the list? Check your own bag

Bag sizes are the brands' published dimensions, read from their own product pages on 5 October 2026; we don't measure bags ourselves. Airline staff have the final say at the gate. Links to brand stores may earn us a commission (disclosure).