Yes, a passport works for domestic flights and most travel

A valid passport is accepted for domestic air travel in the United States. The Transportation Security Administration (TSA) recognizes a U.S. passport as one of several acceptable forms of identification at airport security checkpoints. You do not need a Real ID-compliant driver's license to board a domestic flight if you have a passport with you.

However, the type of travel you are doing matters. A passport works for flying within the country, but the rules differ for other forms of travel and for international trips. Understanding which documents work where will help you pack the right ID and avoid delays at security.

Key Takeaways

  • A valid U.S. passport is accepted at TSA security checkpoints for domestic flights, so you can fly within the country without a Real ID.
  • A passport is required for international air travel regardless of whether your driver's license is Real ID-compliant.
  • For land border crossings to Canada or Mexico, you need either a passport, passport card, or an Enhanced Driver's License — a regular passport-less ID is not enough.
  • If you are flying domestically and do not have a passport, a Real ID driver's license or other approved ID becomes necessary.
  • TSA has accepted passports as valid ID since before Real ID requirements began, so this is a long-standing option, not a new workaround.

What counts as a valid passport for TSA security

The TSA accepts a U.S. passport book (the standard booklet) or a U.S. passport card (the wallet-sized version) at domestic airport security. Both are issued by the U.S. Department of State and both contain the security features TSA uses to verify your identity. Either one is sufficient to pass through a security checkpoint for a domestic flight.

Your passport must not be expired. An expired passport will not be accepted, even if it is only expired by a few days. If your passport expired more than five years ago, you will need to renew it through the State Department rather than using the expedited renewal process. Check your passport's expiration date before heading to the airport.

A passport from another country is also accepted at TSA checkpoints, as long as it is valid and not expired. If you are a permanent resident or visa holder traveling within the U.S., your foreign passport works the same way a U.S. passport does for domestic flights.

Domestic flights versus international travel

For domestic flights — flying from one U.S. state to another — a passport is one of several acceptable documents. You could also use a Real ID driver's license, a military ID, a tribal ID, or a few other forms of federal ID. The passport is straightforward another option on that list.

For international flights, a passport is not optional — it is required. You cannot board an international flight with only a driver's license, Real ID or not. If you are flying to Canada, Mexico, the Caribbean, or anywhere outside the U.S., you must have a valid passport. Some destinations also require a visa, which is a separate document you obtain before travel.

If you are traveling by air and do not have a passport, a Real ID-compliant driver's license will work for domestic flights only. Real ID does not replace a passport for international travel.

Land and sea border crossings

Traveling by car, bus, or train to Canada or Mexico requires a different form of ID than flying does. A regular driver's license — even a Real ID one — is not sufficient for a land border crossing. You will need one of these documents: a valid passport, a passport card, an Enhanced Driver's License, a NEXUS card, or a SENTRI card.

An Enhanced Driver's License is a special driver's license issued by certain states that includes extra security features and can be used at land borders. Not all states offer this option. If your state does not issue Enhanced Driver's Licenses, a passport or passport card is your best option for crossing by land.

For cruise ship travel departing from a U.S. port, the rules are more flexible. You can sometimes board with just a driver's license if you are traveling to Canada or Mexico and returning to the same U.S. port. However, bringing a passport is safer because it works everywhere and avoids confusion at the port.

When you do not have a passport yet

If you need to fly domestically and do not have a passport, you have two main paths. The first is to get a Real ID-compliant driver's license from your state's DMV. The second is to obtain a passport from the U.S. Department of State. Either one will work for domestic flights.

Getting a Real ID driver's license is usually faster. Most states can issue one within a few weeks if you visit in person with the required documents (typically a birth certificate, proof of address, and proof of Social Security number). A passport takes longer — standard processing is currently 6 to 8 weeks, though expedited processing (2 to 3 weeks) costs extra.

If you are flying internationally, a passport is your only option. You cannot use a Real ID driver's license for international air travel under any circumstances. Plan ahead, because passport processing times can be longer during peak travel seasons.

Other acceptable IDs for domestic flights

Beyond a passport or Real ID driver's license, the TSA accepts several other forms of identification for domestic flights. These include a valid military ID, a tribal ID issued by a federally recognized tribe, a permanent resident card (green card), and a few others. A complete list is available on the TSA website.

If you have any of these documents and they are not expired, you can use them at security instead of a passport. However, a passport is often the most practical choice because it is recognized everywhere and works for both domestic and international travel.

Frequently Asked Questions

Can I use an expired passport if I have a Real ID driver's license?

No. An expired passport will not be accepted at TSA security, even if you also have a Real ID. You must present a valid, non-expired form of ID. If your passport is expired, use your Real ID driver's license instead, or renew your passport before your trip.

Do I need a passport card or the full passport book?

Either one works for domestic flights. The passport card is smaller and fits in a wallet, while the passport book is larger but contains more pages. For domestic travel only, the card is sufficient. If you plan to travel internationally by air, the book is more widely recognized, though the card works too.

What if I am traveling to Canada by car but do not have a passport?

You will need an Enhanced Driver's License, NEXUS card, or SENTRI card instead. Not all states issue Enhanced Driver's Licenses, so check with your state's DMV. If your state does not offer one, obtaining a passport or passport card is the most straightforward option.

Can a child travel on a domestic flight with a passport instead of a real ID?

Yes. Children do not need a Real ID for domestic flights. A valid passport, passport card, or other TSA-approved ID works for children the same way it does for adults. Children under 18 do not need a Real ID until they reach 18 years old.

Is a passport valid forever for travel purposes?

No. A passport expires and must be renewed. An adult passport is valid for 10 years, and a child passport is valid for 5 years. Once expired, it cannot be used for any travel. Check your expiration date several months before any planned trip so you have time to renew if needed.