Personal Item
Allegiant Air45 x 35 x 20 cm
Frontier Airlines45 x 35 x 20 cm
Airline baggage comparison · United States
Allegiant Air vs Frontier Airlines baggage rules
A source-backed comparison of Allegiant Air and Frontier Airlines personal item and carry-on limits, fare conditions and weight rules.
Quick verdict
Neither airline is universally more generous; the answer changes by item or by edge.
Personal item and carry-on side by side
| Bag type | Allegiant Air | Frontier Airlines | Dimensional result |
|---|---|---|---|
| Personal Item | 45 x 35 x 20 cm Weight not listed Included · All fares | 45 x 35 x 20 cm Weight not listed Included · Basic | Allegiant Air and Frontier Airlines publish the same dimensional limit for the compared item. |
| Carry-on | 55 x 40 x 25 cm Varies by fare Check fare conditions · Paid carry-on | Not listed Not listed Not listed · Not listed | The available published dimensions are not complete enough for a reliable dimensional winner. |
Source match date
Recently source-checkedPublished dimensions were matched to the official source within 45 days; fare and weight coverage may be separate.
Source match date Aug 7, 2026
Relative published size frames
Carry-on
Allegiant Air55 x 40 x 25 cm
Frontier AirlinesNot listed
Bar area is a simple volume comparison for orientation only. Airline sizers enforce each edge separately; volume alone cannot prove that a bag fits.
Official policy sources
Explore the published size limits
Common questions before you pack
Neither airline is universally more generous; the answer changes by item or by edge. Compare both rows because personal-item and overhead-bag results can differ. Fare and weight rules remain separate from dimensions.
Possibly, but only if every packed edge fits both airlines' current limit and your fares include that item. Use the prefilled comparison, then verify both official sources.
Not necessarily. Inclusion can depend on the fare, route, cabin or add-on even when the dimensions fit. The table shows the published inclusion status; your ticket controls the final allowance.