For U.S. domestic flights , most travelers 18 and older need a valid government-issued photo ID, and as of May 7, 2025 that usually means a REAL ID-compliant driver’s license or another accepted alternative like a U.S. passport. For international flights , you generally need a passport, and the name on your ID must match your ticket and boarding pass.

Domestic flights

  • A REAL ID-compliant state ID or driver’s license.
  • Or an acceptable alternative such as a U.S. passport, passport card, military ID, or DHS trusted traveler card.
  • Children under 18 usually do not need ID when traveling with an adult.

International flights

  • A valid passport is the standard ID for leaving or entering the U.S..
  • Some trips may also require a visa, depending on destination.

Practical note

  • Expired IDs are generally not accepted.
  • If your ID is not REAL ID-compliant, you can still fly with another accepted form of identification such as a passport.

Here’s the shortest version: domestic = REAL ID or passport; international = passport.