Basically – yes, you need one. If all was well in the world and there wasn’t even a remote chance of you missing your cruise ship or getting injured or sick and being left in a foreign port and you just flew in and out of Florida or other US port… then you could get away without a passport. But really you want to go to Europe some day and just incase one of those terrible things happen – you need to just get a passport. You need a passport to fly into the US from anywhere outside of US – (San Juan PR okay… it’s a US territory)
Carnival sent out a letter explaining it – here is a part of that:
There has been much attention on the new travel requirements for U.S. Citizens going into effect on June 1, 2009, and we would like to clarify this for you. While the new Western Hemisphere Travel Initiative (WHTI) requires valid passports for land and sea travel, a final ruling was issued allowing leniency for “closed-loop” cruises, i.e., sailings that both originate and terminate in the same U.S. port.
U.S. citizens taking “closed-loop” cruises are not required to have a passport but will need proof of citizenship and a government-issued photo ID, such as an original or certified copy of a birth certificate and a driver’s license. Children will also be required to carry a birth certificate and a photo ID if over the age of 15.
Although a passport is not required for “closed loop” cruises, we strongly recommend all guests travel with a passport (valid for at least six months beyond completion of travel), a passport card or an enhanced driver’s license (EDL). Having these documents will enable them to fly from the U.S. to a foreign port in the event they miss their scheduled embarkation or to fly back to the U.S. if they need to disembark the ship mid-cruise due to an emergency.
If a cruise begins and ends in different U.S. ports or begins and ends in a foreign port, a valid passport or other recognized WHTI-compliant document is required. A valid passport is required if you are traveling on any of our Europe cruises.
For more information, a complete list of WHTI-compliant documents or to obtain a passport application, visit www.travel.state.gov
I would like to take this opportunity to remind you that ALL guests need proof of citizenship in order to travel and failure to present a valid document at check in will result in denied boarding and no refund will be issued.
So there you have it – RECOMMENDED – but not required on round-trip US departure cruises.








