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G4 · United States · Ultra low-cost

Allegiant Air Carry-On Size 2026 22 x 16 x 10"

By Caden SorensonVerified Oct 2026Sourced from the official Allegiant Air policy

Exact Allegiant Air carry-on dimensions, weight limits, and fees for 2026.

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On this page
  1. Quick answer
  2. Allegiant Air dimensions
  3. Weight limit
  4. Carry-on fee
  5. Bag fit matrix
  6. Fare class breakdown
  7. Overhead bin size
  8. Avoiding gate-check
  9. What counts as a personal item
  10. Common mistakes
  11. Gate-check process
  12. vs Frontier Airlines
  13. Checked bag fees
  14. Special items
  15. Basic economy
  16. FAQ
  17. Sources

Quick answer

The free cabin bag on Allegiant Air is one personal item up to 18 x 14 x 8" (45 x 35 x 20 cm) that fits under the seat in front of you, included on every fare. A full-size overhead carry-on up to 22 x 16 x 10" (55 x 40 x 25 cm) costs extra, at a price that varies by flight, or comes with a higher fare. There is no published carry-on weight limit.

  • Carry-on size: up to 22 x 16 x 10" (55 x 40 x 25 cm)
  • Weight limit: no published weight limit
  • Carry-on fee: paid, varies by flight
  • Personal item: up to 18 x 14 x 8" (45 x 35 x 20 cm), free on every fare
  • Gate-check risk: High
  • Last verified: Oct 2026
Allegiant Air carry-on maximum size, 22 x 16 x 10 inches (55 x 40 x 25 cm)22" (55 cm)10" (25 cm)16"(40 cm)LHW
Allegiant Air maximum carry-on dimensions, including wheels and handles.

Carry-On Bag

Max dimensions (in)
22 x 16 x 10"
Max dimensions (cm)
55 x 40 x 25 cm
Weight limit
No published limit
Fee
Paid, varies by flight
Gate-check risk
High

Carry-on bags are not free: the carry-on is priced by route and by when it is added, from $10 to $75 per segment, cheapest when added at booking. Max 22 x 16 x 10 in (55 x 40 x 25 cm), must fit in the overhead bin. Only the personal item is included.

Personal Item

Max dimensions (in)
18 x 14 x 8"
Max dimensions (cm)
45 x 35 x 20 cm
Included
Yes, free

Included free. Max 18 x 14 x 8 in (45 x 35 x 20 cm). Must fit completely under the seat in front of you.

See checked bag fees & more

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Alliance
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Allegiant Air carry-on dimensions and bag size

The maximum Allegiant Air carry-on size is 22 x 16 x 10 inches, or 55 x 40 x 25 cm as Allegiant Air publishes it. These measurements include wheels, handles, and any external pockets, so a bag marketed as "22 inch" can go over 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. Our guidance: pack it light enough that you can lift the bag into the overhead bin yourself.

Does Allegiant Air charge for carry-on bags?

Yes. Allegiant Air charges for carry-on bags on most fares, with a price that varies by flight and is lowest when added at booking. Fees climb at every stage: online, airport kiosk, ticket counter, gate. The personal item stays free on every fare. A carry-on is not included on the Allegiant Air Base Fare.

What bags fit as an 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 typeTypical sizeOn Allegiant Air
Standard backpack
Everyday daypack, laptop backpack
18 x 13 x 8"Fits
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"Fits

Allegiant Air carry-on by fare class

FareCarry-onPersonal itemNotes
Base fareNot includedIncludedOnly the personal item is included. Carry-on is a paid add-on.
Bundles (Bare, Deluxe, Total)IncludedIncludedBundled 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
Allegiant Air checked baggage fees
Domestic economy
1st bagNot published
2nd bagNot published
Long-haul / international
1st bagNot published
Weight limit50 lb
Linear dim80 in
Overweight & oversize
51–70 lb$50
71–100 lb$75
63–80 inNot published

Allegiant prices checked bags by route and per segment, and cheaper when pre-purchased; there is no flat published fee (use the baggage fee table or calculator for your flight). Up to four checked bags per passenger, each up to 50 lb and 80 linear inches. Overweight adds $50 for 51-70 lb and $75 for 71-100 lb; bags over 80 linear inches (203 cm) add $75.

How to skip the Allegiant Air checked bag fee

  1. Pack carry-on only. Confirm your bag fits the Allegiant Air carry-on size.
Allegiant Air special items & sports equipment
Ski / snowboard
As a checked bagsee details below
Golf clubs
As a checked bagsee details below
Bicycle
Not published
Pet in cabin
$50
Pet as cargo
Not published

Each piece of sporting equipment (golf, ski, snowboard, fishing, scuba and similar) counts as a checked bag at standard bag fees per segment. Overweight and oversize fees apply above 50 lb or 80 linear inches, and nothing over 70 lb is accepted. Bicycles are not on Allegiant's published sporting equipment list. Pet in cabin is $50 per segment per carrier, domestic dogs and cats only, within the contiguous 48 states; no pets in the cargo hold.

Allegiant Air basic economy restrictions
Base FareAllegiant Air's lowest fare tier
Carry-on allowed
No
Personal item allowed
Yes
Checked bag surcharge
Not published
  • Personal item only (carry-on and checked bag cost extra)
  • Seat selection costs extra
  • No changes without fee
  • All extras priced à la carte

Frequently asked questions

What is the Allegiant Air carry-on size limit?

The free cabin bag on Allegiant Air is one personal item up to 18 x 14 x 8" (45 x 35 x 20 cm) that fits under the seat in front of you, included on every fare. A full-size overhead carry-on up to 22 x 16 x 10" (55 x 40 x 25 cm), including wheels, handles, and any external pockets, costs extra, at a price that varies by flight, or comes with a higher fare. There is no published carry-on weight limit.

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

The Allegiant Air carry-on size limit in centimeters is 55 x 40 x 25 cm. Allegiant Air publishes the inch size as 22 x 16 x 10". 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. Our guidance: pack it light enough that you can lift the bag into the overhead bin yourself.

Does Allegiant Air charge for carry-on bags?

Yes. Allegiant Air charges for carry-on bags on most fares, with a price that varies by flight and is lowest when added at booking. Fees climb at each stage, from online to kiosk to gate. The personal item stays free on every fare. A carry-on is not included on the Allegiant Air Base Fare.

What is the Allegiant Air personal item size?

The personal item on Allegiant Air must fit within 18 x 14 x 8" (45 x 35 x 20 cm) and slide fully under the seat in front of you. Included free. Max 18 x 14 x 8 in (45 x 35 x 20 cm). Must fit completely under the seat in front of you.

Will my bag be gate-checked on Allegiant Air?

Our guidance rates the gate-check risk on Allegiant Air as High. It is our own rating, not a figure Allegiant Air publishes. 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 an 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 16 x 10" (55 x 40 x 25 cm). Confirm your specific bag measures under the limit with wheels and handles included.

Does a backpack count as a personal item on Allegiant Air?

Yes. A standard daypack (roughly 18 x 13 x 8 inches) fits within the Allegiant Air personal item limit of 18 x 14 x 8" (45 x 35 x 20 cm). The bag must slide fully under the seat in front of you. Oversized hiking or travel backpacks will not fit and count as a carry-on.

How much does a checked bag cost on Allegiant Air?

Allegiant Air does not publish one flat first checked bag fee. The price varies by route and fare class.

What are the Allegiant Air overweight and oversize bag fees?

Allegiant Air charges $50 for bags weighing 51 to 70 lb and $75 for 71 to 100 lb. Bags over 100 lb or 80 inches are generally refused.

Flying Allegiant Air out of these airports?

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

Allegiant Air head-to-head comparisons

In-depth comparisons between Allegiant Air and another carrier, covering bags, seats, on-time performance, routes, and loyalty.

Sources

Facts, costs, and travel details in this carry-on guide were verified against the following sources. See our research methodology for how we vet and update data.

If a figure looks wrong, email hello@vient.org, see how we handle corrections, or browse past fixes in our public changelog.

Helpful guides

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

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