15 EAN Holdings LLC (Operating as Enterprise, Alamo and National car rental companies)
Report Abuse. If you are a U.S. citizen, then you do not need a passport for Hawaii. Hawaii is part of the United States. If you travel to the Caribbean, Canada, Mexico or other places outside of the United States, then you will need a passport starting January 23, 2007 for air travel. Source(s): http://travel.state.gov/travel/cbpmc/cbp...
A U.S passport is needed when traveling outside the United States or it's territories. A passport is not required for travel by U.S. Citizens to any territory or waters, continental or insular, subject to the jurisdiction of the United States (including Puerto Rico, Guam, American Samoa and the U.S. Virgin Islands.).