Does Allegiant have a carry-on weight limit?

Allegiant doesn't publish a weight limit for carry-ons, but you need to be able to lift your bag into the overhead bin yourself.

What is the Allegiant personal item size?

7 × 15 × 16 in (18 × 38 × 41 cm). Guides disagree: some list 7 × 15 × 16 in, others 8 × 14 × 18 in. We use the smaller size so you don't get caught out.

Will a standard 22 × 14 × 9 in carry-on fit on Allegiant?

Yes. A 22 × 14 × 9 in bag (56 × 36 × 23 cm) fits within Allegiant's 22 × 16 × 10 in (56 × 41 × 25 cm) limit.

What is the Allegiant carry-on size in centimeters?

56 × 41 × 25 cm, which is 22 × 16 × 10 in. Airlines measure the outside of the bag, wheels and handles included.

Can I bring a carry-on and a personal item on Allegiant?

Only the personal item is free on Base fare; the carry-on is an add-on or comes with higher fares. Guides disagree: some list 7 × 15 × 16 in, others 8 × 14 × 18 in. We use the smaller size so you don't get caught out.

What happens if my carry-on is too big on Allegiant?

Gate agents can make you check it, and checking a bag at the gate usually costs more than adding it when you book. Measure your packed bag, wheels and handles included, before you go.

Which airports does Allegiant fly from?

Allegiant flies from Las Vegas (LAS), St. Petersburg–Clearwater (PIE), Austin (AUS), Boise (BOI), Burbank (BUR), Charleston (CHS), Cincinnati (CVG), Des Moines (DSM), Fort Lauderdale (FLL), Fort Myers (RSW), plus 23 more airports we cover. Each has an airport guide with transit, lounges and parking.

Does a backpack count as a personal item on Allegiant?

Yes, if it fits within 7 × 15 × 16 in (18 × 38 × 41 cm). A typical small backpack or daypack fits, but an under-seat rolling bag (1 in too deep), a laptop backpack (2 in too long, 1 in too deep), a large tote (2 in too long) and a weekender duffel (4 in too long, 3 in too deep) don't.

2026 carry-on & personal item rules

Allegiant Air carry-on size

Allegiant Air's carry-on baggage size limit is 22 × 16 × 10 in (56 × 41 × 25 cm), with no published weight limit. A carry-on costs extra: about $18–$35 when you book, more later, and up to $75 at the gate.

Verified Oct 17, 2026By Steven MoHow we check Report a correction

Carry-on

22 × 16 × 10 in

56 × 41 × 25 cm

Weight limit

None published

You must be able to lift it into the bin

Personal item

7 × 15 × 16 in

18 × 38 × 41 cm

Carry-on on cheapest fare

Costs extra

Base fare includes only a personal item

Quick answer

Allegiant Air allows a carry-on up to 22 × 16 × 10 in (56 × 41 × 25 cm), plus a personal item up to 7 × 15 × 16 in. The cheapest fare includes only the personal item; the carry-on costs extra.

Carry-on: 22 × 16 × 10 in (56 × 41 × 25 cm)
Weight limit: None published
Personal item: 7 × 15 × 16 in (18 × 38 × 41 cm)
Cheapest fare: Costs extra on the cheapest fare
Standard 22 × 14 × 9 in bag: Fits
Checked bag: the first checked bag on Allegiant costs $20–$50 if you pay online ($75 at the airport) and the second $20–$50.

Allegiant bag sizes, drawn to scale

Carry-on: 22 × 16 × 10 in (56 × 41 × 25 cm), wheels and handles includedPersonal item: 7 × 15 × 16 in (18 × 38 × 41 cm)

Will my bag fit on Allegiant?

Measure your packed bag, including wheels and handles.

LengthinWidthinDepthin

Weight (optional)lb

As a carry-on

Fits

Fits, but costs extra on the cheapest fare

Limit: 22 × 16 × 10 in (56 × 41 × 25 cm)

As a personal item

Too big

6 in too long, 2 in too deep

Limit: 7 × 15 × 16 in (18 × 38 × 41 cm)

Check this bag against every airline

Will my bag fit as a personal item on Allegiant?

Typical sizes of everyday bags, checked against Allegiant's 7 × 15 × 16 in personal item limit. Measure your own bag, or use the checker above.

Small backpack or daypack16 × 12 × 6 inFits
Under-seat rolling bag16 × 13 × 8 inToo big: 1 in too deep
Laptop backpack18 × 12 × 8 inToo big: 2 in too long, 1 in too deep
Large tote18 × 14 × 6 inToo big: 2 in too long
Weekender duffel20 × 11 × 10 inToo big: 4 in too long, 3 in too deep

Allegiant carry-on rules by fare

Base fare

Fares include only a personal item. A carry-on is a paid add-on, cheapest at booking.

Higher fares

Bundles and higher fares add the carry-on; otherwise you buy it separately.

Checked bags

On all Allegiant flights, the first checked bag on Allegiant costs $20–$50 if you pay online ($75 at the airport) and the second $20–$50. All Allegiant bag fees

Tips for flying Allegiant

•Measure your packed bag, wheels and handles included; many suitcases sold as "22-inch" are taller with the wheels.
•Add the carry-on when you book. It usually costs more later and the most at the gate.

How Allegiant compares

Carry-on rules at other U.S. airlines.

Airline	Carry-on	Weight	Personal item	Carry-on on cheapest fare
Allegiant Air	22 × 16 × 10 in56 × 41 × 25 cm	—	7 × 15 × 16 in	Costs extra
American Airlines	22 × 14 × 9 in56 × 36 × 23 cm	—	18 × 14 × 8 in	Included
Delta Air Lines	22 × 14 × 9 in56 × 36 × 23 cm	—	Must fit under seat	Included
United Airlines	22 × 14 × 9 in56 × 36 × 23 cm	—	17 × 10 × 9 in	Not on some basic fares
Southwest Airlines	24 × 16 × 10 in61 × 41 × 25 cm	—	16.25 × 13.5 × 8 in	Included
Alaska Airlines	22 × 14 × 9 in56 × 36 × 23 cm	—	Must fit under seat	Included
JetBlue	22 × 14 × 9 in56 × 36 × 23 cm	—	17 × 13 × 8 in	Included
Hawaiian Airlines	22 × 14 × 9 in56 × 36 × 23 cm	25 lb	Must fit under seat	Included
Frontier Airlines	24 × 16 × 10 in61 × 41 × 25 cm	35 lb	18 × 14 × 8 in	Costs extra
Sun Country Airlines	24 × 16 × 11 in61 × 41 × 28 cm	35 lb	17 × 13 × 9 in	Costs extra
Breeze Airways	22 × 14 × 9 in56 × 36 × 23 cm	35 lb	17 × 13 × 8 in	Costs extra
Avelo Airlines	22 × 14 × 9 in56 × 36 × 23 cm	—	17 × 13 × 9 in	Costs extra

Allegiant Air
Carry-on
22 × 16 × 10 in (56 × 41 × 25 cm)
Weight
—
Personal item
7 × 15 × 16 in
Cheapest fare
Costs extra
American Airlines
Carry-on
22 × 14 × 9 in (56 × 36 × 23 cm)
Weight
—
Personal item
18 × 14 × 8 in
Cheapest fare
Included
Delta Air Lines
Carry-on
22 × 14 × 9 in (56 × 36 × 23 cm)
Weight
—
Personal item
Must fit under seat
Cheapest fare
Included
United Airlines
Carry-on
22 × 14 × 9 in (56 × 36 × 23 cm)
Weight
—
Personal item
17 × 10 × 9 in
Cheapest fare
Not on some basic fares
Southwest Airlines
Carry-on
24 × 16 × 10 in (61 × 41 × 25 cm)
Weight
—
Personal item
16.25 × 13.5 × 8 in
Cheapest fare
Included
Alaska Airlines
Carry-on
22 × 14 × 9 in (56 × 36 × 23 cm)
Weight
—
Personal item
Must fit under seat
Cheapest fare
Included
JetBlue
Carry-on
22 × 14 × 9 in (56 × 36 × 23 cm)
Weight
—
Personal item
17 × 13 × 8 in
Cheapest fare
Included
Hawaiian Airlines
Carry-on
22 × 14 × 9 in (56 × 36 × 23 cm)
Weight
25 lb
Personal item
Must fit under seat
Cheapest fare
Included
Frontier Airlines
Carry-on
24 × 16 × 10 in (61 × 41 × 25 cm)
Weight
35 lb
Personal item
18 × 14 × 8 in
Cheapest fare
Costs extra
Sun Country Airlines
Carry-on
24 × 16 × 11 in (61 × 41 × 28 cm)
Weight
35 lb
Personal item
17 × 13 × 9 in
Cheapest fare
Costs extra
Breeze Airways
Carry-on
22 × 14 × 9 in (56 × 36 × 23 cm)
Weight
35 lb
Personal item
17 × 13 × 8 in
Cheapest fare
Costs extra
Avelo Airlines
Carry-on
22 × 14 × 9 in (56 × 36 × 23 cm)
Weight
—
Personal item
17 × 13 × 9 in
Cheapest fare
Costs extra

Head-to-head comparisons

Allegiant vs American Allegiant vs Delta Allegiant vs United Allegiant vs Southwest Allegiant vs Alaska Allegiant vs JetBlue Allegiant vs Hawaiian Allegiant vs Frontier Allegiant vs Sun Country Allegiant vs Breeze Allegiant vs Avelo

Allegiant carry-on FAQ

Allegiant Air allows a carry-on up to 22 × 16 × 10 in (56 × 41 × 25 cm), including wheels and handles. A carry-on costs extra: about $18–$35 when you book, more later, and up to $75 at the gate.

Connecting on Allegiant

How long a layover you need at its hubs.

Las Vegas (LAS)Connection time guide St. Petersburg–Clearwater (PIE)Connection time guide

Airports Allegiant flies from

Airport guides for the airports we cover: getting into town, terminals, lounges and parking.

Sources

Last verified Oct 17, 2026. Airlines change their rules without notice, so confirm with the airline before you fly.

Read how we collect and check this data, or tell us if something's out of date.

Cheap flights on Allegiant and more

Now that your bag fits, get the fare. We watch prices from your home airports and email you when they drop well below normal.

Get flight deals free See Premium+ plans

Free plan available · 14-day free Premium+ trial · Cancel anytime