currently, there are no uniformly enforced airline restrictions concerning carry-on luggage. Most carriers state that the bag must fit in the overhead bin or under the seat in front of you. The usual maximum measurements are said to be 22 X 14 X 9 inches, but many folks continue to exceed that and are allowed to do so. At most airports, there are b... Found on http://www.ddtvl.com/glossary/glossary.htm