The carry-on must also fit into the sizer at the airport; if it doesn't, you'll be required to check it.
How do I measure my carry-on bag size?
And you have to measure this side as well. So one one two and three sides of your suitcase. Measure. It add them up and you will find the total linear size of your suitcase in inches.
How strict are they with carry-on size?
Carry-on bags are limited to 22 inches long, 14 inches wide and 9 inches high including wheels and handles. All three measurements shouldn't add up to more than 45 inches.
Are carry-on bags measured?
Contents