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Allegiant Air Carry-On Rules

Under the seat

Personal Item

Included

45×35×20 cm

17.7×13.8×7.9 in

One 45×35×20 cm personal item is free and must fit under the seat; no separate weight limit is published on the baggage page.

Overhead cabin bag

cabin bag

No overhead cabin bag

A 55×40×25 cm carry-on is a paid option; one 45×35×20 cm personal item is free. Baggage prices vary by route and booking time.

Measure the full external bag size, including wheels and handles.

Fares & cabin classes

Basic Economy

No overhead cabin bag

Personal Item: 45×35×20 cm

Base fare: one free 45×35×20 cm personal item. A carry-on is a paid add-on.

Economy

1 cabin bag

55×40×25 cm

One carry-on when purchased as an add-on or included in the booked bundle.

Baggage fees

No reliable fixed price is listed here. Check your booking for the cost of adding a bag; an unlisted price does not mean it is free.

Official baggage policy

How to use this policy

Check cabin bag dimensions, weight and personal-item limits separately. A bag has to pass every published limit at once; being under the length and width limit does not help if the depth, weight, or fare-specific allowance is tighter.

Editorial signal only. Leave margin instead of relying on discretionary gate behavior.

Allegiant Air liquids policy

Consult current TSA and departure/transfer-airport screening rules. The baggage page links restricted-article guidance; a cabin bag size allowance does not establish permission for its contents.

Frequently asked questions

What is the Allegiant Air cabin bag size?

Allegiant Air: Basic: 45×35×20 cm. 55×40×25 cm needs an eligible fare, add-on or exception. Allegiant Air allows a cabin bag up to 55×40×25 cm (21.7×15.7×9.8 in). Dimensions include wheels and handles.

Does Allegiant Air have a weight limit for carry-on?

Allegiant Air: No weight limit stated. See the official policy page for fare-specific notes.

Does Allegiant Air allow a personal item?

Yes. Allegiant Air allows a personal item up to 45×35×20 cm. It must fit under the seat in front of you.

How strict is Allegiant Air about bag size?

Allegiant Air has higher caution enforcement. Editorial signal only. Leave margin instead of relying on discretionary gate behavior.

Additional notes

Sources and scope

Source-based research; no hands-on test or specialist review claimed.

One free personal item 45×35×20 cm; paid carry-on 55×40×25 cm; no fixed price by route.
2026-09-23 baggage dimensions and fare inclusion
About Allegiant's Baggage Policy; One Free Personal Item; One Carry-On Bag
Source review: 9/23/2026 · Codex (AI source review)
Carry-on and checked-bag fees vary by route and booking time; fixed estimates removed.
2026-09-23 fee model; no route-specific quote
Checked and Carry-on Baggage Fees and Allowances
Source review: 9/23/2026 · Codex (AI source review)
One 45×35×20 cm personal item is free; one 55×40×25 cm carry-on is purchased. Measurements include protrusions. No numeric cabin weight cap is stated on this page.
Full record review with the optional-fees page; no independent weight cap or itinerary-specific price inferred.
One Free Personal Item; One Carry-On Bag; exterior measurements
Source review: 10/25/2026 · Codex (AI source review)
The published carry-on range is $10–75 and airport oversized-personal-item range is $50–75; prices vary by route, segment and purchase time.
Ranges retained as source evidence, not converted into a universal exact fee-engine quote.
Checked and Carry-on Baggage Fees and Allowances
Source review: 10/25/2026 · Codex (AI source review)