Passengers on American Airlines are limited to one carry-on bag plus a personal item on all flights. All carry-on luggage needs to be able to fit in sizers that are located by American Airline desks and must not exceed 45 inches in overall dimensions (sum of length, width and height). Luggage cannot exceed 22 inches long, 14 inches wide and nine inches tall. All carry on luggage must fit into the overhead compartments of airplanes.
American Airlines may limit the amount of carry-on luggage on flights due to the aircraft's stowage capacity. Limits on carry-on bags may also be placed into effect after the boarding process has begun at the departing gate.
Passengers who travel with carry-on luggage need to put all liquids in individual containers that are no more than 3.4 ounces, or 100 ml each. All liquids which exceed those sizes must be placed with checked-in luggage. The containers must be in a sealed translucent plastic bag and ready for security to search.
Cutting instruments, ammunition, firearms and liquids that are flammable are prohibited in carry-on luggage, as well as hammers, drills and some forms of alcohol.
