If you're planning a trip with Allegiant Air, one of the most important things to know upfront is how much it'll cost to bring your bags. Allegiant is known for low base fares—but baggage fees can add up fast if you’re not prepared. So, how much is it to check a bag on Allegiant, and what are the weight, size, and refund rules? Let's break it all down for 2025.
What Is Allegiant Airlines' Baggage Policy for Carry-On and Checked Bags?
Allegiant Airlines follows an ultra-low-cost model, which means carry-on and checked bags aren't included in your base fare (except for a personal item).
- Personal item (free): Must fit under the seat (example: purse, small backpack, or laptop bag).
- Carry-on bag: Not free. It must fit in the overhead bin. Size limit is 9 x 14 x 22 inches.
- Checked baggage: You can purchase up to 4 bags per passenger. Fees vary depending on route, time of booking, and location of payment (online vs. airport).
How Much Does Allegiant Charge to Check a Bag Online vs. at the Airport?
The cost to check a bag on Allegiant depends on when and where you pay:
- Online (during booking): $20–$45 per bag (each way).
- Post-booking (via Manage Travel): $45–$50.
- At the airport counter: $50–$75.
- At the gate (if not prepaid): $75.
Pro Tip: Use the Allegiant baggage fee calculator on their official site to estimate costs based on your route and travel dates.
Can I Prepay for Checked Bags on Allegiant Airlines Flights?
Yes, and prepaying for checked baggage is highly recommended. You can add bags:
- During your initial booking
- After booking via Manage Travel
- Via the Allegiant mobile app
- By contacting customer service
The earlier you pay, the more you save. Waiting until the airport will cost you more—sometimes almost double.
What Is the Maximum Size and Weight Limit for Checked Baggage on Allegiant?
Allegiant has strict limits for checked baggage:
- Weight limit: 40 lbs per bag (yes, not 50 lbs like many airlines)
- Size limit: 80 linear inches (length + width + height)
Anything over 40 lbs will incur overweight fees:
- 41–70 lbs: Additional $50
- 71–100 lbs: Additional $75
- Over 100 lbs? Not accepted.
So if you’re wondering, "Is Allegiant checked bag 40 or 50 lbs?"—it’s definitely 40 lbs.
Does Allegiant Airlines Offer Free Baggage for Military Personnel?
Yes! Allegiant honors active-duty U.S. military members with generous baggage perks:
- Up to 2 free checked bags (up to 100 lbs each)
- 1 free carry-on bag
- 1 free personal item
- No charge for oversized or overweight military bags
Spouses and dependents with valid military ID on the same reservation also qualify.
How Do Allegiant’s Baggage Fees Compare with Other Budget Airlines?
Let’s stack Allegiant up against some other budget players:
| Airline | Checked Bag (Online) | Weight Limit | Carry-On Fee |
|---|---|---|---|
| Allegiant | $20–$45 | 40 lbs | $15–$45 |
| Spirit | $30–$40 | 40 lbs | $30–$40 |
| Frontier | $34–$50 | 40 lbs | $30–$50 |
| Southwest | Free (2 bags) | 50 lbs | Free |
Allegiant's fees are competitive, but the 40 lb weight limit can be a gotcha—especially if you're used to 50 lbs on other airlines.
Are Baggage Fees Refundable if I Cancel My Allegiant Flight?
Unfortunately, Allegiant baggage fees are non-refundable in most cases, even if you cancel your flight. However, if Allegiant cancels your flight or significantly changes the schedule, you may be entitled to a refund.
If you booked a Trip Flex fare, you can make one-time changes without fees—but baggage fees still remain non-refundable.
Conclusion
So, how much is it to check a bag on Allegiant? It varies, but the key is to pay early and pack light. With fees ranging from $20 to $75 depending on when and where you pay, preplanning is crucial. Use Allegiant’s tools, like the baggage fee calculator, to avoid surprises—and remember the 40 lb weight limit!
If you're flying on Allegiant economy, business, or with a family, it pays to understand all your options and save where you can. Want the best experience? Book early, prepay, and pack smart.