Required Entry/Re-Entry Documentation/Real ID Act - when proper ID needed
Proper documentation is your responsibility. The following information gives current requirements for United States citizens, effective at time of printing. This information may change, so see your travel agent or contact the consulate for the country to which you are traveling for current requirements.
Passengers returning to the U.S. by air from any international destination must have a valid passport, and may be denied boarding by the airline if the passport is damaged, mutilated, or has excessive wear. A “Passport Card” is not acceptable. If your name on your passport (or for non-U.S. citizens, valid travel documents) does not match your name on your travel vouchers/ tickets, you will not be allowed to travel.