Allegiant Air lets you bring one carry-on up to 10 x 16 x 22 inches (25 x 40 x 55 cm), wheels and handles included, for $10 to $75 per segment. Checked bags are priced by route, with no flat fee published, and each can weigh 50 lb (22 kg). Pets fly only in the cabin, for $50 per carrier per segment.
Allegiant's carry-on limit is 10 x 16 x 22 inches (25 x 40 x 55 cm), and wheels, pockets, handles and decorations all count toward it. The bag must fit in the overhead bin. Unlike the personal item, a carry-on costs extra on the basic package: $10 to $75 per segment, priced by route. An older Allegiant popup page still shows 9 x 14 x 22 in, so we flag the size as a conflict, but both current baggage pages agree on 10 x 16 x 22 in.
Allegiant prices the carry-on by route, so the same bag can cost different amounts on each leg of a round trip.
Your free personal item can measure up to 8 x 14 x 18 inches (20 x 35 x 45 cm) and must sit completely under the seat in front of you. Allegiant names a purse, briefcase or small backpack as examples. Wheels and handles count here too. No weight limit is published.
No weight limit is published for Allegiant carry-ons or personal items, only sizes. The carry-on must fit in the overhead bin and the personal item under the seat. Oversized or extra cabin bags found at the airport cost $50 to $75.
Only the personal item is free at $0. On the basic package, carry-ons ($10 to $75 per segment), checked bags and Priority Access ($11.50 to $17.50) are paid add-ons. Allegiant also sells bundles of popular services at a discount, but its baggage page does not list which bags each bundle includes, so check the bundle details in the booking flow.
| OPTION | PERSONAL ITEM | CARRY-ON | CHECKED BAG |
|---|---|---|---|
| Basic package | Free | $10 to $75 per segment | Priced by route |
| Bundles | Free | Not published | Not published |
Allegiant prices checked bags by route and per segment, so there is no single flat fee. Expect about $15 to $70 per bag each way when you add it at booking or in Manage Travel, and about $75 per bag at the airport. Prepaying is always cheaper; check your route in Allegiant's Baggage Fees Calculator.
Allegiant allows up to 5 checked bags per passenger, but only 4 can be reserved online.
| WHEN YOU PAY | CHECKED BAG PRICE | STATUS |
|---|---|---|
| At booking or in Manage Travel | About $15 to $70, varies by route | Estimate |
| At the airport | About $75 per bag | Estimate |
| Bags allowed | Up to 5 (4 reserved online) | Verified |
Each checked bag can weigh up to 50 lb (22 kg) and measure up to 80 linear inches (203 cm), adding height, width and length. Heavier or larger bags pay surcharges. Allegiant's baggage page refuses any bag over 99 lb, while its fee table prices an overweight band up to 100 lbs; we show the stricter 99 lb figure.
A checked bag of 51 to 70 lbs costs $50 extra, and one of 71 to 100 lbs costs $75 extra, on top of the regular bag price. A bag over 80 linear inches adds $75. In the cabin, oversized or excess carry-on bags caught at the airport cost $50 to $75.
One stroller and one car seat per fare-paying passenger fly free, along with mobility aids and assistive devices. The personal item is also free. Military travelers get discounts through Allegiant Honors, but no free bag allowance is published. The Allways Rewards Visa does not include a free checked bag.
Yes, for $50 per carrier per segment, non-refundable, on flights within the 48 contiguous states. Only domestic dogs and cats are accepted, at least 8 weeks old, up to 2 per carrier. Soft carriers can be 18 x 12 x 11 inches (46 x 30 x 28 cm) and hard ones 17 x 11 x 10.5 inches (43 x 28 x 27 cm). The carrier replaces either your personal item or your paid carry-on. There is no cargo option.
Allegiant lets two pets share one carrier, though each paid traveler is limited to a single carrier.
Gate-checked bags cost $0 to $75, and oversized or extra cabin bags at the airport cost $50 to $75. Allegiant gate checks when a bag is too big, when bins fill up, or when a car seat or stroller reaches the gate. Because wheels and handles count, measure the whole bag against 10 x 16 x 22 inches before you go.
Sports equipment can weigh up to 70 lb (32 kg), and Allegiant counts each piece as a checked bag, charged per person, per bag and per segment. Overweight and oversize fees apply beyond 50 lbs or 80 inches, and the five-bag limit includes sports items.
Since May 13, 2026, Sun Country has belonged to Allegiant Travel Company, but the two still run as separate airlines with their own brands. Manage your reservation, check-in and customer service through the airline you booked, and follow that airline's baggage rules. Allegiant's fees and sizes on this page apply to Allegiant bookings.
Yes, as a paid carry-on. Allegiant's limit is 10 x 16 x 22 inches including wheels and handles, so a 22 x 14 x 9 bag fits. It still costs $10 to $75 per segment unless you shrink to the free 8 x 14 x 18 in personal item.
Yes, if it fits within 8 x 14 x 18 inches and goes fully under the seat in front of you. Allegiant names a small backpack as a personal item, which costs $0.
Yes. Allegiant says airport prices are higher. Prepaid bags run about $15 to $70 each way depending on route, while airport prices are about $75 per bag.
Yes, it uses one of your two slots. You can bring the pet carrier plus a personal item or a paid carry-on, but not both, and the carrier goes under the seat for taxi, takeoff and landing.
Up to 5 per passenger, and 4 of them can be reserved online. Each must be 50 lb or less and 80 linear inches or less to avoid overweight and oversize charges.
Verified October 3, 2026 by BaggageLimits editors. Rules change often; confirm with the airline before you fly.