Travel.State.Gov > International Travel > Before You Go > Travelers with Special Considerations > Cruise Ship Passengers
If You Choose to Travel:
Check with your doctor to:
During Your Cruise:
Other Things to Keep in Mind
Ask your cruise line about:
We recommend that everyone taking a cruise from the United States have a passport book. Though some “closed-loop” cruises may not require a U.S. passport, we recommend bringing yours in case of an emergency, such as an unexpected medical air evacuation or the ship docking at an alternate port. Also, your cruise company may require you to have a passport, even if U.S. Customs and Border Protection does not.
You can use the passport card to reenter the United States at sea ports of entry from Mexico, Canada, Bermuda, and the Caribbean. However, if you are not able to return on the cruise ship for any reason (e.g., for an emergency evacuation, you will need a passport book to fly back to the United States.
Unexpected circumstances can come up that make it impossible to return to the United States on the cruise ship. Here are some examples: