According to Airfarewatchdog, your carry-on bag probably won’t fit on most major US airlines anymore. The overhead bin just got a little less full, but the cost will likely be coming out of flyers’ wallets. American, Delta, and United Airlines have all recently reduced the size of bags permitted as carry-on luggage. Previously, the industry standard measured 22in x 15in x 9in. Now, those dimensions run 22in x 14in x 9in. That is a change of 1 inch in width. Some passengers have been told it is a new FAA regulation. But sizes vary on airlines, so it’s always a good idea to check the allowed sizes of the airline you are using. Jet Blue and Southwest Airlines have much friendlier carry-on policies, each allowing bags up to 24in x 16in x 10in.