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Frontier Airlines Carry-On and Personal Item Size

Checked against Frontier Airlines's baggage pages on October 7, 2026

Frontier Airlines allows a carry-on of up to 24 x 16 x 10 in (61 x 41 x 25 cm), weighing up to 35 lb (15.9 kg), including wheels and handles. The personal item can be up to 14 x 18 x 8 in (36 x 46 x 20 cm) and 35 lb (15.9 kg). Only the personal item is free; the carry-on costs extra.

Bag size, with wheels and handles
AirlinePersonal itemCarry-on
FrontierPersonal item: FitsCarry-on: FitsCosts extra unless your bundle includes it
AllegiantPersonal item: FitsCarry-on: FitsCosts extra ($10 to $75)
Sun CountryUnderseat item: 1 in over on length (max 17 in); 1 in over on width (max 13 in)Overhead bag: FitsCosts extra
SouthwestPersonal item: No size publishedCarry-on: Fits

Your longest side is compared with each airline's longest limit, and so on. Weight is checked only where the airline publishes a limit. "No size published" means the bag just has to fit under the seat in front of you.

Frontier Airlines carry-on size

Inches24 x 16 x 10 in
Centimeters61 x 41 x 25 cm (converted)
OrderH x W x D
Weight35 lb (15.9 kg)
Included?Costs extra unless your bundle includes it

Frontier Airlines gives large backpacks, small duffel bags and small wheeled suitcases as examples.

Frontier Airlines personal item size

Inches14 x 18 x 8 in
Centimeters36 x 46 x 20 cm (converted)
OrderH x W x D
Weight35 lb (15.9 kg)

Personal item examples from Frontier Airlines: purses, totes, computer bags, briefcases and kids' backpacks.

Does Frontier Airlines charge for carry-on bags?

Yes.Costs extra unless your bundle includes it.

  • Every Frontier ticket includes one free personal item. A carry-on bag costs extra, bought on its own or as part of a bundle.
  • Frontier doesn't publish one carry-on price: it varies by flight and by when you buy. Its bag price checker quotes it for booking, before check-in, at check-in, at the airport counter and at the boarding gate, and Frontier says airport prices are higher.
  • All Elite members can bring a carry-on free. Active-duty military passengers can bring one carry-on free.

More Frontier carry-on rules

  • Both limits include handles, wheels and straps.
  • Frontier checks the size of personal items and carry-ons during boarding. Items larger than the allowed size are subject to an additional charge.
  • Board First ($2.99 to $14.99 per direction) guarantees overhead bin space, and is only sold to customers who buy a carry-on.
  • Medical devices, wheelchairs and essential baby gear don't count toward your bag allowance.

Is a backpack a Frontier personal item?

Yes, if it fits: Frontier Airlines lists backpacks among its personal item examples. Measure it packed, including straps and side pockets, against 14 x 18 x 8 in (36 x 46 x 20 cm). Our travel backpack picks, by their makers' measurements:

BackpackAs personal itemAs carry-on
Peak Design Travel Backpack 45Lstandard (35L), 22 x 13 x 9.5 in4 in over on length (max 18 in); 1.5 in over on depth (max 8 in)Fits
Peak Design Travel Backpack 45Lexpanded (45L), 22 x 13 x 11 in4 in over on length (max 18 in); 3 in over on depth (max 8 in)1 in over on depth (max 10 in)
Osprey Farpoint/Fairview Travel Daypackdetachable 15L daypack, 18.1 x 12.2 x 8.3 in0.1 in over on length (max 18 in); 0.3 in over on depth (max 8 in)Fits

Frontier vs Allegiant vs Sun Country vs Southwest carry-on size

AirlinePersonal itemCarry-onFree carry-on?
Frontier14 x 18 x 8 in(36 x 46 x 20 cm)24 x 16 x 10 in(61 x 41 x 25 cm)Costs extra unless your bundle includes it
Allegiant8 x 14 x 18 in(20 x 35 x 45 cm)10 x 16 x 22 in(25 x 40 x 55 cm)Costs extra ($10 to $75)
Sun Country17 x 13 x 9 in(43 x 33 x 23 cm)24 x 16 x 11 in(61 x 41 x 28 cm)Costs extra
SouthwestNot published24 x 16 x 10 in(61 x 41 x 25 cm)All fares

Compare every airline, including international carriers, in the carry-on size checker.

Sources

Limits are from each airline's own pages, checked October 7, 2026. Airlines change bag rules often, so check before you fly. Conversions use 1 inch = 2.54 cm. Backpack sizes are from the manufacturers.