Airline spec · verified 2026-07-02

Frontier Airlines carry-on & personal item size limits

Every number below was checked against Frontier Airlines's official pages on 2026-07-02, with links to the source.

Check if your bag fits Frontier Airlines →

Sizer enforcement: strict editorial view, not airline data
Carry-on is paid — strong fee incentive; gate sizers actively enforced

What is worth knowing about Frontier Airlines

Frontier flies the same 24 x 16 x 10 in cabin box as Southwest with the opposite economics behind it: the bag is a paid add-on on every base fare, cheapest at booking and dearest at the gate, which is exactly the incentive that makes its sizers worth taking seriously. Both the cabin bag and the personal item carry a 35 lb weight limit, which most US carriers never publish. Checked bags are paid as well, and capped at 40 lb rather than the usual 50 — the lowest checked allowance on this site.

Fares & policy

Two limits Frontier Airlines does not set

The sizes above are the ones Frontier Airlines publishes. These are not, and they do not change when you switch carriers: liquids in the cabin — at a US checkpoint every liquid, aerosol, gel, cream and paste must be 3.4 oz (100 ml) or less and fit one quart-sized bag (TSA — Liquids, Aerosols and Gels Rule); and power banks and spare lithium batteries, which must be carried in the cabin only, never in a checked bag, with an ordinary rechargeable cell capped at 100 watt-hours (FAA PackSafe — Lithium Batteries). The FAA states that airlines may set stricter watt-hour and quantity limits than its own, so Frontier Airlines can be tighter than this and never looser.

Item by item, the answers are on our can you bring it on a plane pages.