G4 · United States · Ultra low-cost

Allegiant Air Carry-On Size

Exact Allegiant Air carry-on dimensions, weight limits, and fees for 2026, verified against the airline's own published policy on 2026-04-14.

Quick answer

Carry-on size: up to 22 x 14 x 9" (56 x 36 x 23 cm)
Weight limit: no published weight limit
Carry-on fee: from $35
Personal item: up to 16 x 15 x 7", free on every fare
Gate-check risk: High

Allegiant Air maximum carry-on dimensions, including wheels and handles.

Carry-On Bag

Max dimensions (in): 22 x 14 x 9"
Max dimensions (cm): 56 x 36 x 23 cm
Weight limit: No published limit
Fee: From $35
Gate-check risk: High

Carry-on bags are not free. Fees vary by when you purchase, cheapest at booking and most expensive at the gate. Only the personal item is included.

Personal Item

Max dimensions (in): 16 x 15 x 7"
Max dimensions (cm): 41 x 38 x 18 cm
Included: Yes, free

Included free. Must fit under the seat in front of you.

See full personal item rules for Allegiant Air

Allegiant Air carry-on dimensions and bag size

The maximum Allegiant Air carry-on size is 22 x 14 x 9 inches, which works out to 56 x 36 x 23 cm. These measurements include wheels, handles, and any external pockets. Gate sizers on Allegiant Air match the published limits closely, so a bag marketed as "22 inch" can fail if its wheels push the total past 22 inches. Always measure your bag packed, not empty.

Allegiant Air carry-on weight limit

Allegiant Air does not publish a specific carry-on weight limit for domestic travel. The operational rule is that you must be able to lift the bag into the overhead bin without help. Very heavy bags can still be refused at the gate, and on some regional aircraft the crew may ask you to check an overweight bag as a courtesy.

Does Allegiant Air charge for carry-on bags?

Yes. Allegiant Air charges for carry-on bags on most fares, starting at around $35 when added at booking. Fees climb at every stage: online, airport kiosk, ticket counter, gate. The personal item stays free on every fare. Basic Economy fares on Allegiant Air are the ones where carry-on fees apply most aggressively, since the fare excludes the overhead-bin bag by default.

What bags fit as a Allegiant Air personal item

Common bag types compared against the Allegiant Air personal item limit. Sizes are typical retail dimensions and vary by brand.

Bag type	Typical size	On Allegiant Air
Standard backpack Everyday daypack, laptop backpack	18 x 13 x 8"	Too big
Tote bag Canvas or leather tote	15 x 14 x 5"	Fits
Laptop bag Messenger or slim briefcase	16 x 12 x 4"	Fits
Small duffel Gym or weekender	18 x 11 x 11"	Too big
Purse Handbag or crossbody	12 x 10 x 5"	Fits
Under-seat roller Mini wheeled bag	16 x 14 x 8"	Too big

Allegiant Air carry-on by fare class

Fare	Carry-on	Personal item	Notes
Base fare	Not included	Included	Only the personal item is included. Carry-on is a paid add-on.
Bundles (Bare, Deluxe, Total)	Included	Included	Bundled fares can include carry-on, checked bag, and seat selection. Contents vary by route.

Allegiant Air overhead bin size by aircraft

All-Airbus A320 family fleet. Carry-on max is 22 x 16 x 10 inches including wheels, handles, and decorations. Personal item max is 18 x 14 x 8 inches and must fit under the seat. Both sizes are enforced at the gate.

Avoiding gate-check on Allegiant Air

Add your carry-on at booking for the lowest price. Fees rise as you move from booking to online check-in to the airport counter to the gate. Priority boarding can be purchased separately and helps lock in overhead space.

What counts as a personal item on Allegiant Air

Allowed

Small backpack
Purse
Laptop bag
Diaper bag

Counts as a second carry-on

A second roller bag
Any item larger than 18 x 14 x 8

Common Allegiant Air carry-on mistakes

Thinking the personal item is unrestricted. Allegiant checks the 18 x 14 x 8 sizer and charges if it does not fit.
Waiting to buy a carry-on at the gate, which is the most expensive tier.
Assuming bundles always include a carry-on. Read the bundle contents before assuming.

What happens if your bag does not fit on Allegiant Air

If the flight is full, agents may valet roller bags at the jet bridge. If your bag was not pre-paid, Allegiant collects the carry-on fee before tagging.

Allegiant Air vs Frontier Airlines carry-on

Allegiant and Frontier are both ULCCs that charge for carry-ons, but Allegiant flies point to point from small leisure markets on a smaller network, while Frontier runs a national hub-light model. Frontier's 24 x 16 x 10 carry-on box is taller than Allegiant's 22 x 16 x 10, and Frontier enforces a 35 lb weight limit that Allegiant does not publish.

See Frontier Airlines carry-on size

Frequently asked questions

What is the Allegiant Air carry-on size limit?

Allegiant Air allows carry-on bags up to 22 x 14 x 9" (56 x 36 x 23 cm), including wheels, handles, and any external pockets. There is no published weight limit, but you must be able to lift the bag into the overhead bin unassisted.

What are the Allegiant Air carry-on dimensions in cm?

The Allegiant Air carry-on size limit in centimeters is 56 x 36 x 23 cm. In inches that converts to 22 x 14 x 9". Both measurements include wheels, handles, and external pockets.

What is the Allegiant Air carry-on weight limit?

Allegiant Air does not publish a carry-on weight limit for domestic travel. The operational rule is that you must be able to lift the bag into the overhead bin without help. Very heavy bags can still be refused at the gate.

Does Allegiant Air charge for carry-on bags?

Yes. Allegiant Air charges for carry-on bags on most fares, starting around $35 when added at booking. Fees climb at each stage, from online to kiosk to gate. The personal item stays free on every fare. Basic Economy is the fare where the carry-on fee applies most aggressively.

What is the Allegiant Air personal item size?

The personal item on Allegiant Air must fit within 16 x 15 x 7" (41 x 38 x 18 cm) and slide fully under the seat in front of you. Included free. Must fit under the seat in front of you.

Will my bag be gate-checked on Allegiant Air?

Allegiant Air currently has a high gate-check risk based on our review of boarding policies and traveler reports. Plan on your carry-on being sized at the gate and be prepared to pay if it does not fit the sizer.

Can I bring a carry-on on Allegiant Air Base Fare?

No. Allegiant Air Base Fare passengers are limited to one personal item that fits under the seat. A full-size carry-on either is not allowed or costs an extra fee.

Does a 22-inch suitcase fit as a Allegiant Air carry-on?

Usually yes. A standard 22 x 14 x 9 inch carry-on suitcase fits within the Allegiant Air carry-on limit of 22 x 14 x 9". Confirm your specific bag measures under the limit with wheels and handles included.

Need the full Allegiant Air baggage policy?

Checked bag fees, overweight and oversize charges, special items (ski, golf, bike, pets), and basic economy fare rules for Allegiant Air, all on one page.

Full Allegiant Air baggage policy Allegiant Air checked bag fees Allegiant Air personal item Generate a packing list

Flying Allegiant Air out of these airports?

Check terminal layouts, connection times, and layover tips for major Allegiant Air hubs and focus cities.

Helpful guides

Gear, tactics, and packing help for your Allegiant Air flight.

Compare other airlines

Sources & verification

Last verified 2026-04-14 against the official Allegiant Air policy at https://www.allegiantair.com/optional-services . Airlines change their rules without notice, so always confirm with Allegiant Air before flying.