Does the Away Bigger Carry-On fit Frontier Airlines' carry-on?

Yes, just. Fits with 1 cm to spare on the tightest side. It's too big for Frontier Airlines' personal item (12 cm too long). On Frontier Airlines' cheapest fare the carry-on costs extra.

Tight fit

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Side the bag fails onPart that sticks outSizer frame

Tight fit

Fits with 1 cm to spare on the tightest side.

BagAway Bigger Carry-On

Cabin bagFrontier Airlines

Length: 57.7of 61 cm3.3 cm spare
Width: 39.1of 40.6 cm1.5 cm spare
Depth: 24.4of 25.4 cm1 cm spare

Weight15.9 kg limit

Packed weightkg

Empty it weighs 3.4 kg, leaving 12.5 kg for your things.

What you can do

Pack it before you measure. A full pocket can add 3 to 5 cm.
Frontier Airlines charges for this bag on the cheapest fare, so add it when you book.

See bags that fit Frontier Airlines

Frontier Airlines rules checked 2 Nov 2026. Source. Sizes include wheels and handles. Some details are still being confirmed.

Side by side

Away Bigger Carry-On against Frontier Airlines' limits. Bags can be turned, so the longest side is compared with the longest limit.

Carry-on: 61 × 40.6 × 25.4 cm, 15.9 kg
Side	Bag	Limit	Result
Length	57.7 cm	61 cm	3.3 cm spare
Width	39.1 cm	40.6 cm	1.5 cm spare
Depth	24.4 cm	25.4 cm	1 cm spare

Personal item: 45.7 × 35.6 × 20.3 cm
Side	Bag	Limit	Result
Length	57.7 cm	45.7 cm	12 cm over
Width	39.1 cm	35.6 cm	3.5 cm over
Depth	24.4 cm	20.3 cm	4.1 cm over

Empty it weighs 3.4 kg of the 15.9 kg limit.

Frontier Airlines rules worth knowing

Carry-on: 24 × 16 × 10 in, 35 lb. Always a paid add-on.
Personal item: 14 × 18 × 8 in including straps, wheels and handles. Strictly enforced with a sizer.
Spirit Airlines used the same 18 × 14 × 8 in personal item before it stopped flying in 2026.

Bags that fit Frontier Airlines' carry-on

Biggest first.

Samsonite Freeform Carry-On Spinner58.4 × 38.1 × 24.8 cmTight0.6 cm to spareBag page
Rimowa Essential Cabin55 × 39 × 23 cmFits1.6 cm to spareBag page
Travelpro Maxlite 5 21" Expandable Spinner58.4 × 36.8 × 22.9 cmFits2.5 cm to spareBag page
Away Carry-On55.1 × 36.6 × 22.9 cmFits2.5 cm to spareBag page

Good to know

Will the Away Bigger Carry-On still fit Frontier Airlines when it's packed?

Only just. Keep the front pockets flat and the expansion zip closed, and measure it packed before you leave.

What is Frontier Airlines' carry-on size limit?

Frontier Airlines' carry-on limit is 61 × 40.6 × 25.4 cm, up to 15.9 kg.

Which other bags fit Frontier Airlines?

Rimowa Essential Cabin, Travelpro Maxlite 5 21" Expandable Spinner and Away Carry-On fit with room to spare. Samsonite Freeform Carry-On Spinner is right on the limit.