Citizens flying to Hawaii don't need a passport since Hawaii is part of the United States, but they must present a government-issued photo I.D. and ticket.

For U.S. citizens, all parts of Hawaii—including Oahu, Maui, Kauai, the Big Island, Lanai, and Molokai—do not require a passport for travel from the mainland United States. Since Hawaii is the 50th U.S. state, traveling there is considered a domestic flight. However, in 2026, you must ensure your state-issued driver's license or ID is REAL ID compliant to pass through TSA checkpoints. If your license is not REAL ID compliant, you would then need a passport or passport card as your valid form of identification, even though you aren't leaving the country. For international travelers visiting Hawaii, a valid passport and potentially a visa or ESTA (Electronic System for Travel Authorization) are still required, just as they would be for any other entry point into the United States.