Allegiant Air Checked Baggage

Allegiant Air checked baggage dimensions cap out at 80 linear inches (203 cm), with a 50 lb (22 kg) weight limit per bag. Nothing over 99 lb is accepted at any price. The 80 inch figure matters more than the weight cap here, because Allegiant charges an oversize fee the moment a bag crosses it.

Allegiant does not publish a flat first bag or second bag fee. Prices move by route, by timing, and by whether you buy online or at the airport. The airline states this on its own baggage page.

Traveler accounts put an extra bag added during online check-in around 22 USD on some routes. That lines up with Allegiant rewarding anyone who buys ahead of the counter.

Allowance by fare, the parts Allegiant actually fixes

Every fare with Allegiant Air checked baggage dimensions works the same way once you pay for the bag. The limit is 50 lb (22 kg) per piece. Total size cannot pass 80 linear inches (203 cm).

You can check up to five pieces per passenger, each priced on its own. The fare level changes the price of the bag. It does not change the size or weight cap.

Allegiant flies point to point with almost no codeshare partners. On a trip sold and ticketed on one Allegiant confirmation, Allegiant’s own allowance governs every leg. A separately booked connection on another airline follows that airline’s own checked rules for its own segment.

Our guide to bags on connecting flights walks through how that split works when two tickets are involved.

Overweight and oversize, where the fee jumps

Allegiant adds 50 USD for a bag between 51 and 70 lb. It adds 75 USD for one between 71 and 100 lb, per the airline’s own baggage page. Nothing over 99 lb is accepted at all.

A bag that heavy has to be repacked at the counter or left behind. Oversize adds another 75 USD once a bag passes 80 linear inches (203 cm). That fee stacks on top of any overweight charge.

Community accounts describe uneven enforcement at the scale. One traveler reported a 42 lb bag going through without a word. Forum regulars were quick to call that lucky rather than typical.

Assume the counter will weigh the bag and charge for every pound over. Our overweight and oversize fees guide compares the bands across airlines.

Allegiant does not publish a policy of pooling weight across bags. Its fee structure treats each piece on its own. Packing 45 lb and 55 lb into two bags still draws a charge on the second one.

Splitting evenly at 50 lb each avoids the fee entirely.

What cannot go in the hold

Beyond the standard FAA list, Allegiant singles out electric skateboards, hoverboards and balance gliders. Self balancing boards are refused too, all because of their lithium batteries.

A smart bag with a removable lithium battery is fine. The battery has to come out and ride in the cabin. A bag with a battery that cannot be removed is refused at check-in.

Spare lithium batteries and power banks never go in a checked bag on Allegiant, cabin only. Our batteries in checked luggage page covers the rule in more detail.

Firearms fly checked only, unloaded and locked in a hard sided container. They must be declared at the counter on domestic flights. Golf bags, skis and scuba gear are accepted as a checked piece with their own fee.

Allegiant allows that sporting equipment category up to 70 lb rather than the standard 50 lb cap.

Lightweight cases that fit the 50 lb math

On a carrier that fines every pound past 50, the empty weight of the case matters as much as what you pack. The Travelpro Maxlite 5 25 inch expandable spinner is one of the lighter mid size checked cases, per the manufacturer’s specifications. That leaves more of the 50 lb cap for actual belongings.

For a longer trip, the Travelpro Maxlite 5 29 inch carries the same weight advantage at a larger size. It helps when a family checks one big bag instead of two.

The Samsonite Omni PC 24 inch and the larger Samsonite Omni PC 28 inch both sit well under the 80 linear inch box. Samsonite’s own spec sheet lists the 24 inch case at 62 linear inches total.

The Delsey Helium Aero 24 inch checked spinner is a similar size. It adds a built in lock recognized by TSA, useful on a bag that gets handled by ground crews on every leg.

Budget shoppers should watch the Amazon Basics 30 inch hardside checked luggage carefully. At 30 inches its total size with wheels can run close to the 80 inch cap. Measure it fully packed before you fly rather than trusting the listed length alone.

Whatever case you check, weigh it at home first. The Etekcity digital luggage scale hooks onto a handle and gives a reading in seconds. That beats finding out you are at 53 lb in the check-in line.

Allegiant’s checked fee is dynamic rather than fixed. Our baggage cost estimator is worth running before you book, especially against Frontier, which prices bags on a similar sliding scale.

A card that waives the first checked bag, covered on our credit cards that cover baggage fees page, is worth checking against Allegiant’s own branded card too. Allegiant does not waive bags for elite status the way network carriers do.

For the size and weight of the checked bag category in general terms, our checked baggage weight limit guide is a useful starting point. The parent Allegiant Air baggage rules page covers the carry-on and personal item side of the same trip.

The bottom line

Allegiant Air checked baggage dimensions are simple to hit: 50 lb, 80 linear inches, buy the bag online rather than at the counter. The real risk is the overweight band, not the size box. The counter appears to weigh bags routinely, and the oversize fee stacks on top of it.

Pack a light case, weigh it at home, and buy the bag days before your flight rather than at the gate. Get the Allegiant Air checked baggage dimensions right at booking and the rest of the trip goes smoothly.

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