U.S. citizens do not need a passport for this inter-island Hawaii route
Under NCL's Hawaii inter-island rules, U.S. citizens may board with valid government-issued photo ID. Air travelers age 18 or older should carry a REAL ID, valid passport or another TSA-accepted document.
Cruise and flight requirements differ. Non-U.S. citizens, green-card holders and children should confirm their own documents with the cruise line; REAL ID alone is not sufficient for every traveler.
Scan to chat on WeChat