What is the Allegiant carry-on size limit?

22 × 16 × 10 in (55 × 40 × 25 cm), including wheels and handles.

What is the Allegiant personal item size?

18 × 14 × 8 in (45 × 35 × 20 cm); it must fit under the seat in front of you.

Allegiant includes a free personal item up to 18 × 14 × 8 in (45 × 35 × 20 cm). You can add a carry-on up to 22 × 16 × 10 in (55 × 40 × 25 cm).

18 × 14 × 8 in

45 × 35 × 20 cm

22 × 16 × 10 in

55 × 40 × 25 cm · no weight limit

50 lb

80 linear in (203 cm), 50 lb (22 kg)

Allegiant limits drawn to scale, front view; the personal item is about 57% of the carry-on's volume.

Allegiant allows checked bags up to 80 linear inches, far more than the usual 62; bags over 80 in pay a $75 oversize fee per segment.
Older Allegiant pages still show a 16 × 15 × 7 in personal item and a 22 × 14 × 9 in carry-on; the current limits are the larger ones above.

Carry-on size rank: 7 of 25 (55 L); personal item: 5 of 22 (32 L).

A bag at Allegiant's full carry-on size also fits the carry-on limit of Southwest, Frontier, Spirit, Sun Country, British Airways, easyJet, but is too big for American, Delta, United, JetBlue and 14 more.

A maxed-out Allegiant personal item also passes as a personal item on American, Frontier, Spirit.

Length Width Depth Unit

Source: Allegiant Air, checked 2026-10-29.