Carry On Rules

Some of the most commonly asked questions that we get relate to the carry on rules for the different airlines. Unfortunately, the FAA has not standardized carry on rules, so each airline is different. Hopefully, though, this quick guide will help you sort out your options.

Carry On Rules for Airlines

What classifies as carry on? Unfortunately, there is no easy answer because there is no carry on standard.

The FAA has set a rule that you may have one carry on bag plus one personal item. The personal item that you carry on could include a purse, a briefcase or computer case, a diaper bag, etc. But as for the other carry on bag, each airline is free to set their own carry on rules. The good news is that most airlines are fairly consistent in what they allow as carry on baggage. Still, confirm carry on rules with your airline before you travel so you don't get any surprises.

Airline Link	Carry On Size Summary*
American Airlines	45 linear inches (length x width x height)
America West Airlines	45 linear inches (length x width x height)
British Airways	Size and weight varies by the class you are flying
Comair	45 linear inches (length x width x height). Offers plane-side valet luggage service.
Continental Airlines	45 linear inches (length x width x height)
Delta Airlines	22 x 14 x 9 inches
Northwest Airlines	45 linear inches (length x width x height)
Southwest Airlines	10 x 16 x 24 inches
U.S. Airways	10 x 16 x 24 inches
United Airlines	9 x 14 x 22 inches

* Please note that the carry on summary is just that--a summary. Each airline has specific rules regarding what qualifies as carry on, including weight requirements. Follow the link to check the rules for your airline. We make this information available as a service, but cannot guarantee its accuracy. Check with your airline before you fly.