To fly to Hawaii in 2026, the identification requirements depend on whether you are a domestic or international traveler. For domestic flights from the U.S. mainland, the long-awaited REAL ID enforcement officially began on May 7, 2025. This means your standard driver's license is no longer sufficient unless it is a REAL ID-compliant card, typically marked with a gold star in the upper right corner. If you do not have a REAL ID, you must present an acceptable alternative, such as a U.S. passport, passport card, Global Entry card, or a U.S. military ID. International travelers must present a valid passport and, depending on their country of origin, a valid visa or an approved ESTA (Electronic System for Travel Authorization). It is a peer-to-peer best practice to double-check your license for that gold star today; without it or a passport, you will be denied entry through the TSA checkpoint, turning your tropical dream into a terminal nightmare.