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Allegiant Air Baggage Allowance: Quick Facts at a Glance 1 free personal item per passenger, must fit under the seat (8 x 14 x 18 in / 20 x 35 x 45 cm) Carry-on goes in the overhead bin and usually costs extra (10 x 16 x 22 in / 25 x 40 x 55 cm) Allegiants cabin setup is basically personal item + carry-on (carry-on fees apply) You can pre-buy up to 4 checked bags per passenger (standard allowance) Standard checked bag limit is 50 lb / 22 kg and 80 linear inches / 203 cm (L+W+H) Carry-on pricing varies, but the official range is $10 to $75 (route + timing matter) Buying bags at booking is usually cheapest Fees are often per segment (connections can double-dip your wallet) Fastest way to get stung: airport purchase + overweight + oversize stacking up This guide is built for budget-first travellers doing US domestic hops, weekend breaks, and family trips Must-do: Measure your bag including wheels/handles, then decide early: under-seat only, or pay for overhead now, not later
Preparation matters
As Tuna Parcells once said, No one can take that away from you because you did it.
diameter: 56mm/2.20inches
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