American airlines
New member
Before my first trip with Frontier, I had no clue about the Frontier Airlines size of carry on rules. I almost packed a bigger bag, but luckily I checked—carry-on bags can't exceed 10” D x 16” W x 24” H and must weigh under 35 lbs. Anything extra means paying fees, which can add up fast. Honestly, knowing these rules saved me both stress and money at the airport. Always worth double-checking before you pack!