Carry-on luggage size restrictions vary by airline-here's how to tell if your suitcase, backpack, or duffle bag is small enough to bring as a carry-on.
Best for: a carry-on bag via Delta, United, American, JetBlue, Alaska, Southwest, and Allegiant ...
Between finding a carry-on that will fit in most ... fare on a no-frills carrier like Frontier or Spirit, you’ll generally want to stick with a bag measuring 8 x 18 x 14 inches or smaller ...
That especially applies to handling carry-on luggage — from figuring out size and weight requirements ... a carry on for every airline we've flown (Spirit, Delta, Southwest and JetBlue).