The short answer
- Personal item: free, up to 18 × 14 × 8 in (45 × 35 × 20 cm).
- Carry-on: $10–$75 per segment, by route, up to 22 × 16 × 10 in (55 × 40 × 25 cm).
- Checked bag: first bag Varies by route; up to 50 lb (22 kg) and 80 linear inches.
- Allegiant base fare: The base fare includes only a personal item. A carry-on costs $10–$75 per segment when added online, and $50–$75 if found at the airport.
Allegiant bag fees at a glance
| Bag | Price | Limit |
|---|---|---|
| Personal item | Free | 18 × 14 × 8 in |
| Carry-on bag | $10–$75 per segment, by route | 22 × 16 × 10 in |
| 1st checked bag | Varies by route | Up to 50 lb / 22 kg |
| 2nd checked bag | Varies by route | Up to 80 linear in |
| Overweight bag | 51–70 lb: +$50. 71–100 lb: +$75. Over 99 lb not accepted. | |
| Oversize bag | Over 80 linear in (203 cm): +$75. |
Standard fees for Allegiant’s main routes as of our last check. Elite status, co-branded cards and some fares include bags.
Checked bags
Each checked bag can weigh up to 50 lb (22 kg) and measure up to 80 linear inches (203 cm), length + width + height. Allegiant allows larger checked bags than most airlines: 80 linear inches. Fees are per segment and cheapest when prepaid at booking.
Allegiant carry-on and personal item size
- Carry-on
- 22 × 16 × 10 in
- 55 × 40 × 25 cm · $10–$75 per segment, by route
- Personal item
- 18 × 14 × 8 in
- 45 × 35 × 20 cm · free
Allegiant base fare
The base fare includes only a personal item. A carry-on costs $10–$75 per segment when added online, and $50–$75 if found at the airport.
Rules to know
- All measurements include wheels, pockets, handles and decorations, and bags may be measured before boarding.
- Gate-checking costs $0–$75 depending on the reason (oversize vs full bins or strollers).
- Allegiant completed its acquisition of Sun Country in May 2026; the two still operate and sell separately.
- Up to four bags can be prepaid online.
Will your bag fit Allegiant?
Measure your bag at its widest points. Most carry-on bags are 21–22.5 in tall with wheels.
Bags that fit Allegiant
- Best 22x14x9 Carry-On Luggage (Fits Every US Airline)A 22 × 14 × 9 in bag fits Allegiant’s carry-on limit.
- Best Carry-On Travel Backpacks35–45 L travel backpacks built to the carry-on limit.
- Best 18x14x8 Personal Item Bags (Frontier & Ex-Spirit Size)An 18 × 14 × 8 in bag fits Allegiant’s personal item limit.
- Best Underseat LuggageSmall wheeled bags that go under the seat.
Allegiant compared with similar airlines
| Airline | 1st checked bag | 2nd checked bag | Checked weight | Lowest fare carry-on |
|---|---|---|---|---|
| Allegiant | Varies by route | Varies by route | 50 lb22 kg | Personal item onlyAllegiant base fare |
| Frontier | About $39–$89+ | Higher than the 1st bag | 40 lb18 kg | Personal item onlyFrontier Basic fare |
| Sun Country | About $35–$59+ | Higher than the 1st bag | 50 lb23 kg | Personal item onlySun Country base fare |
| Breeze Airways | About $50–$75 | About $60–$75 | 50 lb23 kg | Personal item onlyBreeze No Flex |
Frequently asked questions
How much is a checked bag on Allegiant?
First bag: Varies by route. Second bag: Varies by route.
What is the weight limit for checked bags on Allegiant?
50 lb (22 kg) in economy. 51–70 lb: +$50. 71–100 lb: +$75. Over 99 lb not accepted.
What does Allegiant base fare include?
The base fare includes only a personal item. A carry-on costs $10–$75 per segment when added online, and $50–$75 if found at the airport.