Airline vs airline · Checked October 29, 2026

Alaska vs Frontier: baggage rules compared

Carry-on, personal item, checked bag and check-in deadlines for Alaska Airlines and Frontier Airlines, from each airline's own website.

The short version

Frontier's carry-on limit is roomier (24 x 16 x 10 in) than Alaska's (22 x 14 x 9 in), about 35% more space.
Alaska: no published carry-on weight limit. Frontier: 35 lb (15.9 kg) carry-on weight limit.
Alaska includes a carry-on, while Frontier charges for a full-size carry-on on its cheapest fare.

	Alaska	Frontier
Carry-on size	22 x 14 x 9 in / about 56 x 36 x 23 cm	24 x 16 x 10 in / about 61 x 41 x 25 cm
Carry-on weight	No published limit	35 lb (15.9 kg)
Carry-on on the cheapest fare	Included	Paid extra
Personal item	No size published, must fit under the seat	18 x 14 x 8 in / about 46 x 36 x 20 cm
Checked bag size	62 in (157 cm) in total	62 in (157 cm) in total
Checked bag weight	23 kg (50 lb) per bag in economy	18 kg (40 lb) per bag in economy, 45 kg (100 lb) max for any bag
Online check-in opens	24 hours before	24 hours before
Bag drop closes	40 min before	60 min before
At the gate by	Not published	20 min before
Power banks	Standard 100 Wh / 160 Wh rules	Standard 100 Wh / 160 Wh rules

Carry-on that fits both

22 x 14.2 x 9.1 in (56 x 36 x 23 cm)

The smallest limit on each side

Personal item that fits both

Under the seat

One airline doesn't publish a size

Flying both on one trip? The trip checker shows which airline sets each limit, and the gate card keeps the rules on your phone.

Measure with wheels, handles and pockets included. The order of the sides doesn't matter.

Is the Alaska carry-on bigger than Frontier?

Frontier's carry-on limit is roomier (24 x 16 x 10 in) than Alaska's (22 x 14 x 9 in), about 35% more space.

What carry-on size fits both Alaska and Frontier?

A bag no bigger than 22 x 14.2 x 9.1 in (56 x 36 x 23 cm) fits both carry-on limits. Check weight limits too.