What is a passport card?
The passport card is the wallet-size travel document that can only be used to re-enter the United States at land border-crossings and sea ports-of-entry from Canada, Mexico, the Caribbean, and Bermuda.
The card provides a less expensive, smaller, and convenient alternative to the passport book for those who travel frequently to these destinations by land or by sea. The passport card cannot be used for international travel by air.
Why can’t I use the passport card to fly to Canada, Mexico, the Caribbean, or Bermuda?
The passport card was designed for the specific needs of northern and southern U.S. border communities with residents that cross the border frequently by land. The passport book is the only document approved for international travel by air.