Frontier Carry-On Rules: Personal Item Size & Carry-On Fees

Quick answer: Frontier includes one personal item with every ticket. The personal-item maximum is 18 x 14 x 8 inches, including handles, wheels, and straps. A paid carry-on can be up to 24 x 16 x 10 inches and weigh up to 35 pounds.

Last reviewed: July 22, 2026. Confirm Frontier’s official bag-size and weight rules.

Frontier baggage allowance at a glance

Bag	Published rule
Included personal item	Up to 18 x 14 x 8 in; up to 35 lb; must fit under the seat.
Paid carry-on	Up to 24 x 16 x 10 in; up to 35 lb; must fit in the overhead bin.
Checked bag	Up to 62 linear inches and 40 lb under the standard policy.

The Frontier personal-item strategy

Frontier is where exact measurements matter most. A bag that feels like a small backpack can still exceed the 18 x 14 x 8 limit once it is packed or its straps and wheels are measured. Choose from personal item bags with the exact size in mind, and leave a little space below the maximum rather than gambling on the airport sizer.

Frontier carry-on and bag fees

Frontier states that every ticket includes a free personal item, while carry-on and checked bags are purchased separately or may be included in a bundle. Prices vary by date, route, and when you buy, so use Frontier’s Bag Price Checker guidance for the current cost. Buying in advance is generally safer than waiting until the airport.

Frontier FAQ

Can I bring a backpack for free on Frontier?

Yes, if it fits within the 18 x 14 x 8 personal-item maximum including straps and any exterior bulk. A larger backpack may require a paid carry-on allowance.