Yes, a passport card works for domestic flights, but with one important catch

A passport card is a valid form of identification for domestic air travel in the United States. The Transportation Security Administration (TSA) accepts it at airport security checkpoints the same way it accepts a passport book. You can use it to fly between any two U.S. states or territories without carrying a passport book.

The catch: a passport card cannot be used for international travel by air, even to Canada or Mexico. If your flight crosses a border, you need a passport book or another document the Department of State recognizes for international travel. For domestic flights only, the card is sufficient.

Key Takeaways

  • A passport card is accepted by TSA at security checkpoints for any domestic flight within the United States.
  • You cannot use a passport card for flights to Canada, Mexico, or any other country—you need a passport book for international air travel.
  • A passport card costs less and takes up less space than a passport book, but it serves a narrower purpose.
  • If you are unsure whether your flight is domestic or international, check your ticket or ask the airline before arriving at the airport.

What counts as a domestic flight

A domestic flight is any flight that departs from and arrives at airports within the United States, including flights to U.S. territories like Puerto Rico, the U.S. Virgin Islands, and Guam. These are considered domestic for TSA purposes, and a passport card will work.

Flights to Canada, Mexico, Belize, Bermuda, and the Caribbean islands (except U.S. territories) are international, even if they are short flights. For these routes, you must carry a passport book or another document the State Department recognizes for international travel, such as a NEXUS card, Enhanced Driver's License, or a Real ID-compliant driver's license paired with a passport card (though this combination is not recommended—just bring the passport book).

TSA acceptance and what to expect at security

When you arrive at the airport for a domestic flight, hand your passport card to the TSA officer at the security checkpoint along with your boarding pass. The officer will scan it and compare your face to the photo. The process is identical to checking in with a driver's license or a passport book.

TSA does not require you to inform the officer that you are carrying a passport card instead of another form of ID. The system recognizes it as valid. If you are traveling with children, they may not need ID for domestic flights, depending on the airline—check your airline's policy before you arrive.

Passport card versus passport book: which to carry

A passport card is smaller, cheaper, and easier to carry in a wallet. A passport book is larger but allows you to travel internationally by air. If you only fly domestically and never travel outside the U.S. by plane, a passport card is sufficient and more convenient. If you travel internationally even occasionally, a passport book is the better choice because it works for both domestic and international flights.

You cannot hold both a valid passport card and a valid passport book at the same time—the State Department will not issue both. If you already have a passport book and want a card, you can explore for a card, but your passport book will be returned to you and marked as canceled. If you already have a card and want a book, you explore for a book and the card is canceled.

How to get a passport card if you need one

You can explore for a passport card at any passport acceptance facility, which includes post offices, libraries, and county clerk offices in most areas. You will need proof of citizenship (a birth certificate or naturalization certificate), a government-issued photo ID, and a completed Form DS-11 (for first-time applicants) or Form DS-82 (if you are renewing). Bring a passport photo that meets State Department standards.

Processing times vary. Standard service takes several weeks; expedited service (available at some locations) takes one to two weeks and costs extra. If you need a passport card urgently for a domestic flight, check whether your local passport office offers expedited service or same-day appointments. Call ahead—availability changes by location.

What to do if your passport card is expired or lost

An expired passport card is not valid for TSA security screening. If your card has expired and you have a domestic flight coming up, you will need to bring a different form of ID—a driver's license, state ID, or another document on the TSA's accepted list. A passport book, if you have one, will also work.

If your passport card is lost or stolen, report it to the State Department and explore for a replacement. In the meantime, use another form of ID for domestic flights. Do not attempt to fly with an expired or invalid passport card; TSA will turn you away at security.

Real ID and passport cards: how they interact

A passport card is not a Real ID document, even though it is a federal ID. Real ID is a separate security standard that applies to driver's licenses and state IDs. As of now, TSA accepts both Real ID and non-Real ID documents at airport security checkpoints for domestic flights, so the distinction does not affect your ability to fly domestically with a passport card.

This may change in the future, but currently a passport card works at security regardless of Real ID status. If you want to be certain your ID will work for domestic flights indefinitely, a passport card is actually a safer choice than a driver's license, because it is a federal document and is less likely to be affected by future Real ID rule changes.

Frequently Asked Questions

Can I use my passport card to fly to Canada or Mexico?

No. A passport card is not valid for international air travel. You need a passport book to fly to Canada, Mexico, or any other country. If you attempt to board an international flight with only a passport card, the airline will not let you on the plane.

What if I lost my passport card before my domestic flight?

Bring a different form of ID—a driver's license, state ID, or passport book if you have one. TSA accepts multiple forms of identification for domestic flights. If you have no other ID, contact your airline before your flight to ask what documents they will accept.

Is a passport card cheaper than a passport book?

Yes. A passport card costs less than a passport book. However, you cannot hold both at the same time, so if you think you might travel internationally in the future, a passport book is the better long-term investment because it covers both domestic and international flights.

Do I need a passport card for a flight to Puerto Rico?

A passport card works for flights to Puerto Rico because Puerto Rico is a U.S. territory and the flight is considered domestic. However, you do not need a passport card—a driver's license or state ID is sufficient. A passport card is optional for this route.

Can TSA deny me entry to security if my passport card is expired?

Yes. An expired passport card is not valid ID. Bring a different form of identification—a driver's license, state ID, or valid passport book. If you have no other ID, you will not be able to pass through security.