Personal Item
45 x 35 x 20 cm
- Fare type
- Check ticket
- Weight
- Weight not listed
- Storage
- Under seat
Allegiant Air
G4Source checked
Allegiant Air carry-on and personal item size limits
Check published Allegiant Air baggage dimensions, fare notes, weight limits, source links, and last checked dates before you fly.
Check your bagAllegiant Air rules, visually summarized
Review the fare label, measurement limit, and official source date together. Your ticket controls the final allowance.
Check fare
Carry-on
55 x 40 x 25 cm
- Fare type
- Check ticket
- Weight
- Varies by fare
- Storage
- Overhead bin
Check your bag for Allegiant Air
Airline limit
45 x 35 x 20 cm
Allegiant Air · Personal Item
Official airline sourceSource checked · Aug 7, 2026
What was checked?
Each check covers the base adult allowance on the linked page. Your route, cabin, benefits or operating carrier may change the allowance.
- Dimensions
- Separate checks were not recorded
- Weight
- Separate checks were not recorded
- Ticket inclusion
- Separate checks were not recorded
Enter dimensions to check
Add your packed bag dimensions to compare them with this airline rule.
Fare type notes
Some airlines include only a smaller underseat item with basic fares. Larger cabin bags can require a paid bundle, priority service, or eligible ticket.
How strict is Allegiant Air?
Allegiant Air publishes 55 x 40 x 25 cm for the cabin bag, and at the gate the sizer frame decides — not your tape measure. CabinFit does not publish an enforcement score; a bag within 1 cm of any limit leaves almost no packing margin. Hard shells can't squeeze and soft bags bulge once packed — leave yourself a margin.
What to watch for on Allegiant Air
Review the fare label, measurement limit, and official source date together. Your ticket controls the final allowance.
Dimensions
Underseat item
Allegiant Air publishes 45 x 35 x 20 cm as the physical personal item limit; it has to fit under the seat in front of you. This describes size and storage only, not ticket entitlement. Allegiant Air does not publish a weight limit for this bag — the size frame is what gets enforced.
Dimensions
Overhead cabin bag
Allegiant Air publishes 55 x 40 x 25 cm as the physical carry-on limit; it goes in the overhead bin. This describes size and storage only, not ticket entitlement. The weight allowance changes with fare type, so check your ticket.
Source
Source snapshot
We last checked Allegiant Air's published limits against Allegiant baggage policy on Aug 7, 2026. If you booked a different fare or your route changed since then, open the linked source for the current rules.
Context
Airline context
Allegiant Air is a low-cost carrier based in United States. Like most low-cost carriers, the free allowance is usually just the underseat bag — the larger cabin bag is often a paid add-on, so match your bag to your exact fare before you get to the gate.
Pets, family gear, batteries, and equipment
Only source-backed policies are expanded. Missing categories stay in a compact review state instead of being presented as airline facts.
Source-backed categories
0/6
No reviewed extra-item policies yet
CabinFit has not reviewed these specific policies for Allegiant Air. Use the official source and do not rely on generic category guidance.
Open official sourcePersonal Item
45 x 35 x 20 cm
- Fare type
- Check ticket
- Weight
- Weight not listed
- Storage
- Under seat
- Confidence
- High
Personal item must fit completely underneath the seat in front.
This allowance may depend on fare type, route, aircraft, cabin, or ticket conditions. Verify your ticket and the official airline page before travel.
Source checkedAug 7, 2026
Official Allegiant Air sourceCarry-on
55 x 40 x 25 cm
- Fare type
- Check ticket
- Weight
- Varies by fare
- Storage
- Overhead bin
- Confidence
- High
Carry-on access is a paid add-on and must fit in the overhead bin.
This allowance may depend on fare type, route, aircraft, cabin, or ticket conditions. Verify your ticket and the official airline page before travel.
Source checkedAug 7, 2026
Official Allegiant Air sourceAirline baggage comparison
Frequently asked
Allegiant Air publishes 45 x 35 x 20 cm as the physical size limit. This does not confirm ticket entitlement; check whether the bag is included with your fare.
Allegiant Air publishes 55 x 40 x 25 cm as the physical size limit. This does not confirm ticket entitlement; check whether the bag is included with your fare.
Allegiant Air publishes 45 x 35 x 20 cm for the personal item, which rides under the seat in front of you, and 55 x 40 x 25 cm for the carry-on, which goes in the overhead bin. Your fare decides whether one or both are included.
No. CabinFit compares your measurements with the limits Allegiant Air published (Allegiant baggage policy, last checked Aug 7, 2026). Gate staff, fare conditions, and aircraft changes can still affect the final decision — keep a margin and open the official page before you fly.
CabinFit has not verified Allegiant Air's cabin policies for pets, instruments, or sports equipment yet, and it will not invent them. Use the official Allegiant Air baggage page linked above for those rules.