What's actually free, and what isn't
The short version, stated plainly.
Free on every Allegiant fare, no fee and nothing to add, as long as it fits under the seat in front of you.
A larger bag that goes into the overhead bin is priced and sold separately on Allegiant. This is the detail that catches people off guard, since most other airlines bundle a carry-on with the ticket.
There is no fare tier or status that includes a free checked bag on Allegiant. Every checked bag is billed, priced dynamically by route and timing.
Allegiant is built around a low base fare with almost everything else unbundled and optional, seats, bags and even booking convenience fees. It keeps the sticker price low, but it means the true cost of your trip depends on what you add.
The personal item, what fits free
This is the one bag that never costs anything on Allegiant.
Up to eight inches by fourteen inches by eighteen inches. The bag needs to fit under the seat in front of you, not in the overhead bin.
A backpack, purse, small tote or laptop bag within that size. One per passenger, included on every fare, no fee and no advance booking required.
It's a carry-on, not a personal item, and it will be billed as one, whether that happens online, at the counter or at the gate.
Carry-on and checked bags, priced by route and timing
Neither one is free. Both get cheaper the earlier you add them.
Allegiant prices a carry-on and each checked bag based on your specific route and how early you add it, not a flat fee that applies to every flight. That's why we never publish a single dollar figure for Allegiant bags, the honest answer depends on your trip.
Adding a bag when you book, or as soon after as you can, on allegiantair.com is consistently the cheapest way to do it.
Waiting to add a bag generally costs more than adding it early, and the airport counter costs more than booking online.
If you show up without having added a bag, expect the highest price on the whole fare structure. Sort it out before you get there.
Give us your route and travel dates and we will confirm the current price for your bags before you pay anything, we don't quote a fixed figure because Allegiant doesn't charge one.
Checked bag limits
How many you can bring, and how big each one can be.
Each one is billed individually and priced by route and timing, the way any Allegiant checked bag is.
Each checked bag can weigh up to fifty pounds before an overweight charge applies on top of the standard bag price.
Length plus width plus height added together, up to eighty linear inches, before an oversize charge applies.
Both add a separate charge on top of what you already paid for the bag, so it's worth weighing and measuring at home before you leave.
Personal item only vs. paying for a bag
Pick the right approach before you get to the airport.
Personal item only
Always free, nothing to add
- Included on every fare, no fee, no booking required
- Must fit the eight by fourteen by eighteen inch limit
- Goes under the seat, not the overhead bin
- Best for short trips or very light packers
Carry-on or checked bag
Always billed, priced by route and timing
- No fare or status includes it free
- Cheapest booked online at the same time as your flight
- Most expensive if you wait for the gate
- Up to four checked bags allowed, fifty pounds each
Special & oversized items
These carry their own charges and limits, arrange them ahead rather than finding out at the counter.
- Sports equipment (golf clubs, skis, surfboards, bikes), its own charge and its own size and weight limits, separate from your regular checked-bag allowance
- Musical instruments, cabin if it fits the personal item or carry-on sizing, or checked with its own handling, confirm before you fly
- Strollers & car seats, ask us to confirm current handling for your route before you travel
- Mobility devices, arrange ahead so it's ready and handled correctly at the gate
The single biggest way to overpay on Allegiant is adding a bag at the gate. Buy your carry-on or checked bag online when you book, or as soon after as you can. Call us with your confirmation number and we'll check what's already on your ticket and add anything you're missing before prices climb.
Frequently asked
Is a carry-on free on Allegiant?+
How much does a checked bag cost on Allegiant?+
How many bags can I check on Allegiant?+
What size is the free personal item on Allegiant?+
When is the cheapest time to add a bag on Allegiant?+
Contact options
Reach Allegiant directly, or let us confirm and add your bags.
Contact Allegiant Air directly
The airline's own official channels, free.
More Allegiant Air help
Related guides.