The contract between you and the airline dictates what duties the airline owes to you. The terms of this contract are printed on the back of your ticket under the heading "Conditions of Contract." In addition, most airline tickets also state that the contract incorporates the "Conditions of Carriage and Related Regulations" that the airline has filed with the U.S. Department of Transportation. You can get a copy of the "Conditions of Carriage" by requesting it from the airline or your travel agent. Also, most airlines post the "Conditions of Carriage" on their websites.