You can use a U.S. passport card to fly within the United States, but not on any international flight. TSA accepts the card at airport security checkpoints for domestic travel, so it works as a federal ID for flights between U.S. cities.1Transportation Security Administration. Acceptable Identification at the TSA Checkpoint The moment a flight crosses a U.S. border, though, the card stops working and only a passport book qualifies.2U.S. Department of State. Get a Passport Card
Flying Inside the United States
The passport card is a federally issued ID that satisfies TSA’s identification requirement at every domestic checkpoint.1Transportation Security Administration. Acceptable Identification at the TSA Checkpoint If you carry the card, you don’t also need a REAL ID-compliant driver’s license to board a flight within the country.
That matters more since REAL ID enforcement began on May 7, 2025. Standard driver’s licenses without the REAL ID star are no longer accepted at TSA checkpoints.3Transportation Security Administration. TSA Reminds Public of REAL ID Enforcement Deadline of May 7, 2025 If your state license isn’t compliant, the passport card is the cheapest federal ID that gets you past security. A first-time card costs $65, less than half the price of a passport book.
TSA also accepts expired IDs for up to two years past their expiration date, and that grace period covers the passport card too.1Transportation Security Administration. Acceptable Identification at the TSA Checkpoint An expired card still gets you on the plane domestically, within that window.
Flying Internationally
The passport card is not valid for international air travel of any kind. It lets you drive into Canada or Mexico and return from a Caribbean cruise by sea, but as soon as you board an airplane leaving or entering the United States, only a passport book will do.2U.S. Department of State. Get a Passport Card
Federal law requires U.S. citizens to carry a valid passport when departing from or entering the United States by air.4Office of the Law Revision Counsel. 8 USC 1185 Travel Control of Citizens and Aliens The card was designed under the Western Hemisphere Travel Initiative for land and sea border crossings, and it lacks the visa pages and features airlines and foreign governments require for air entry.5U.S. Department of State. Western Hemisphere Travel Initiative Deadline Approaches
If you show up at the gate with only a passport card for an international flight, the airline will deny you boarding. The restriction is tied to the mode of travel, not the destination, so the fact that the card is valid for the same country by car or ship doesn’t help you at the airport.
Cruises and the Fly-Home Problem
The passport card works for closed-loop cruises: voyages that leave from and return to the same U.S. port, visiting Canada, Mexico, Bermuda, or the Caribbean. You can re-enter the United States at a seaport with just the card.6U.S. Department of State. Cruise Ships
The catch is what happens if you can’t come home on the ship. A medical emergency that puts you in a foreign hospital past the ship’s departure, or a mechanical problem that offloads passengers at a foreign port, leaves you needing to fly back. The card won’t get you on that flight. The State Department specifically warns that you’d need a passport book to fly internationally to the United States in either scenario.6U.S. Department of State. Cruise Ships An emergency passport from the nearest U.S. embassy or consulate is possible, but it adds delay to an already difficult situation.7U.S. Department of State. Lost or Stolen Passport Abroad
Which Card You Actually Need
If you fly internationally even once in a while, the passport book is the only option. The card can’t replace it for air travel outside the country. If your trips are domestic flights, drives into Canada or Mexico, and the occasional Caribbean cruise, the card covers all of that for a fraction of the book’s price.
A first-time adult passport card is $65 ($30 application fee plus a $35 acceptance facility fee).8U.S. Department of State. Passport Fees A first-time passport book runs $165 for an adult ($130 plus the same $35 facility fee). Expedited processing adds $60 to either. Routine processing takes four to six weeks and expedited takes two to three, before mailing time, which can add a couple of weeks in each direction.9U.S. Department of State. Processing Times for U.S. Passports
Renewing a passport card costs $30 with no facility fee. Eligible cardholders age 25 and older can renew online if their card was valid for 10 years and has expired within the past five years, or will expire within a year.10U.S. Department of State. Renew Your Passport Online Submitting the online application cancels your current card immediately, so don’t renew right before a trip where you’ll need it. Adult cards are valid for 10 years; cards issued to children under 16 are valid for five.
Many travelers who fly abroad only occasionally carry both. Applying for the card and the book at the same time on a single Form DS-11 saves the $35 acceptance facility fee on the second document. The card fits in a wallet as everyday backup ID for domestic flights, and the book stays put until an international trip comes up.