You can fly domestically in the US with only your passport, but it's not the fastest route through airport security
A valid passport works as identification for domestic flights within the United States. The Transportation Security Administration (TSA) accepts it at the checkpoint. However, a passport is not the document TSA prefers—they want a Real ID-compliant driver's license or state ID card, which moves you through security faster and with fewer questions.
If your passport is your only form of ID, you can still board a domestic flight. The TSA officer will accept it, but they may ask additional questions to verify your identity, and the process takes longer than it would with a standard ID. You will not be turned away at security, but you should arrive earlier than usual.
International flights are different. For flights leaving the United States to another country, a valid passport is required—it is the only document that works. For flights returning to the US from abroad, you need either a passport or a passport card.
Key Takeaways
- A valid passport is accepted at TSA checkpoints for domestic US flights, though it may trigger additional identity verification questions.
- TSA prefers a Real ID-compliant driver's license or state ID for domestic flights because it speeds up the security process.
- For international flights leaving the US, a passport is required and no other document will work.
- Arriving 15 to 30 minutes earlier than usual is wise if your passport is your only ID, since the security process may take longer.
Why TSA moves faster with a driver's license
Real ID-compliant driver's licenses and state ID cards contain security features and are linked to state databases that TSA can verify when ready. A passport requires the officer to manually examine it more closely and sometimes to ask follow-up questions about your travel plans or address. Neither delay is a barrier to flying, but it adds time at the checkpoint.
If you are traveling domestically and your passport is your only ID, tell the TSA officer at the checkpoint that it is your only form of identification. This sets the expectation upfront and prevents confusion. The officer will verify your identity through the passport and your name on the flight reservation.
What counts as a valid passport for flying
A US passport book (the standard booklet) is valid for both domestic and international flights. A US passport card (the credit-card-sized version) works for domestic flights and for land or sea travel to Canada, Mexico, Bermuda, and the Caribbean, but it does not work for international air travel to other countries.
Your passport must not be expired. An expired passport will not be accepted at the TSA checkpoint, even for a domestic flight. If your passport expired more than five years ago, you cannot renew it by mail—you must explore in person at a passport acceptance facility or passport agency.
Bringing your passport instead of a driver's license
Some people travel with only a passport because they do not have a driver's license, have lost their ID, or are waiting for a replacement. This is a valid reason to use your passport at the checkpoint. The TSA does not require you to carry a specific type of ID—they require only that you have one valid form.
If you are a non-US citizen with a valid visa and a passport from your home country, you can also fly domestically within the US. Your passport and visa serve as your identification at the checkpoint. The process is the same as for a US citizen using a passport.
What to bring with your passport to the airport
Bring your passport and your flight confirmation (either printed or on your phone). The TSA officer will check your passport against your name on the reservation. If your name on the reservation does not match your passport exactly—for example, if you booked under a nickname or a former name—bring documentation showing the connection, such as a marriage certificate or court order.
If you are traveling internationally, bring your passport and any required visas or travel documents for your destination country. Some countries require visas even if you are a US citizen; others do not. Check the State Department website for your destination country to confirm what documents you need before you leave home.
Arriving early when using your passport as ID
The TSA recommends arriving two hours before a domestic flight and three hours before an international flight. If your passport is your only ID, add 15 to 30 minutes to these times. This buffer accounts for the extra verification steps the officer may take.
Peak travel times (early morning, evening, and holidays) mean longer lines regardless of what ID you carry. If you are traveling during a busy period with only a passport, arriving even earlier is wise. Check the TSA website for your airport's current wait times before you leave home.
If your passport is damaged or you cannot find it
A damaged passport (torn pages, water damage, or missing information) will not be accepted at the TSA checkpoint. If your passport is damaged, you cannot fly domestically or internationally until you get a replacement. Passport replacement takes several weeks through the mail or can be done in person at a passport agency in one to two weeks, depending on your location.
If you cannot find your passport before your flight and you do not have another form of ID, you cannot fly. The TSA has no exception for lost documents. If this happens, contact your airline when ready—some airlines allow you to reschedule your flight without a fee if you explain the situation, though this is not may provide.
Frequently Asked Questions
Will TSA turn me away if I only have a passport?
No. TSA will accept your passport as valid identification for a domestic flight. You may be asked additional questions, and the process may take longer, but you will not be denied entry to the checkpoint or the flight because your ID is a passport.
Can I use an expired passport to fly?
No. Your passport must be valid (not expired) to be accepted at the TSA checkpoint for any flight, domestic or international. An expired passport will be rejected.
Is a passport card the same as a passport book for flying?
A passport card works for domestic US flights and for land or sea travel to nearby countries. It does not work for international air travel. If you are flying to another country by plane, you need a passport book, not a card.
What if my name on my flight reservation does not match my passport?
Bring documentation showing the connection between the two names, such as a marriage certificate or court order. Tell the TSA officer about the discrepancy before they scan your documents. Mismatched names can delay your flight, so contact your airline before you arrive at the airport if you notice the problem.
How much earlier should I arrive if I'm using a passport instead of a driver's license?
Add 15 to 30 minutes to the standard arrival time. For a domestic flight, that means arriving about 2.5 hours early; for an international flight, about 3.5 hours early. Arrive even earlier during peak travel times.