The maximum dimensions for a carry-on bag are 9 inches x 14 inches x 22 inches (22 cm x 35 cm x 56 cm), including handles and wheels.
Airline carry on variances and the new IATA recommended standard
Hand luggage dimensions
Any item larger than the carry-on baggage size and any item above the carry-on and personal item allowance will be checked to your final destination, …
Better start measuring your bags!
Carry-on baggage allowance is 22 inches high by 14 inches long by 9 inches
Make sure you check your airline’s carry-on dimensions
Hand baggage regulations
This 22x9x14-inch suitcase meets the carry-on size rules for U.S. airlines.
Carry On Luggage Size
Testers at Consumer Reports accurately measured carry-on luggage.
Carry on size luggage
Airline Baggage Fees and Luggage Size Restrictions
The new guidelines (pictured far right) aim to free up space in overhead lockers
Airlines set to reduce size of carry on luggage
Size it and Weight it…before you head to the airport… by Leslie Emmons
An EasyJet baggage measuring stand
Lufthansa transatlantic baggage infographic
Carry-on bag size varies by airline — and can catch you by surprise – LA Times
10 Tips How To Travel For 14 Days With Just Carry On Luggage
Luggage Online offers a size chart (and Carry-On Luggage Regulations for each airline too).
Carry on bag dimensions
Rules for Carry-On Luggage Size
… jetblue luggage sizer for size restrictions …
permitted size of cabin baggage