It usually needs to be below 62 linear inches (157 cm). So for example, if you measured that your luggage was 28 x 20 x 12 inches, then it would be 60 linear inches in total (28 + 20 + 12 = 60).

Typically, a carry-on bag should not exceed 22 x 14 x 9 inches (inclusive of the handle and wheels). However, the rules can ...