do you need passport for domestic flight

You do not need a passport for a domestic flight in the United States. However, you are required to present a valid form of identification accepted by the Transportation Security Administration (TSA). Acceptable IDs include a state-issued driver's license or ID card (must be REAL ID compliant starting May 7, 2025), a U.S. passport, a U.S. passport card, or other TSA-accepted forms of ID. Minors under 18 generally do not need to show ID when traveling domestically with an adult. So while a passport is valid and accepted, it is not mandatory for domestic flights, and other forms of TSA-approved IDs suffice for traveling within the U.S.