The U.S. passport book and passport card are both accepted as REAL ID for domestic flights.
The REAL ID Act requires IDs issued by a state to meet federal security standards. You will need a REAL ID to board a domestic flight and enter a federal facility.
Check your state’s status to see if your current driver’s license or state ID meets REAL ID standards.
The Transportation Security Administration (TSA) accepts several photo IDs when boarding domestic flights.
If you don't have REAL ID, check with your state on how to apply for one, or consider applying for a U.S. passport book or card.
You may not have heard about the U.S. passport card before.
About the Passport Card
The U.S. passport card is a wallet-sized, plastic passport that has no visa pages. The card has the same length of validity as the passport book. The card is a cheaper alternative to the book, and is not valid for international air travel.