You do not need a passport to fly within the United States

A passport is not required for domestic flights, train travel, or driving within the U.S. The Transportation Security Administration (TSA) accepts a standard driver's license or state ID card as proof of identity at airport security checkpoints. If you do not have a driver's license, other documents work too — a passport card, military ID, tribal ID, or even a state-issued ID specifically for people who do not drive.

The confusion often comes from international travel rules. A passport becomes necessary only when you cross a U.S. border by air, sea, or land. Flying from New York to California, driving to another state, or taking Amtrak across the country all require only a valid ID that shows your name and photo.

Key Takeaways

  • A standard driver's license or state ID card is all you need for domestic air travel, train travel, and driving between states.
  • The TSA accepts many forms of ID at airport security, including military ID, tribal ID, and state-issued non-driver IDs.
  • A passport becomes necessary only when traveling outside the United States by any method of transportation.
  • If you do not have a photo ID, you can still fly domestically by arriving early and completing TSA's identity verification process at the airport.

What counts as valid ID for domestic flights

The TSA maintains a list of documents that work at security checkpoints. A current driver's license from any U.S. state or territory is the most common choice. A state ID card — the non-driver version — works just as well. Both must show your name, date of birth, and a photo.

Military ID cards, including dependent IDs, are accepted. So are tribal IDs issued by federally recognized tribes, passport cards (the small version, not the full passport book), and enhanced driver's licenses from states that issue them. If you have recently renewed your license and the old one is still valid, either one works.

The document must not be expired, though the TSA sometimes makes exceptions for IDs that expired during the COVID-19 pandemic — check the TSA website for current rules. The name on your ID should match the name on your airline ticket, though minor variations (like a middle initial) usually do not cause problems.

What to do if you do not have a photo ID

You can still fly domestically without a photo ID, but the process takes longer. Arrive at the airport at least two hours before your flight instead of the usual one hour. Tell the TSA officer at security that you do not have an ID.

The officer will ask you questions to verify your identity — your name, date of birth, address, and other personal details. They may ask about recent trips, credit cards, or other information from public records. This verification usually takes 10 to 15 minutes. If you pass, you proceed through security normally. If the officer cannot verify your identity, you will not be allowed to board.

Bringing a second document helps, even if it does not have a photo. A Social Security card, birth certificate, credit card, or utility bill with your name and address can support your identity claim. These are not required, but they make verification faster.

Domestic travel to U.S. territories

Travel to Puerto Rico, the U.S. Virgin Islands, Guam, and American Samoa counts as domestic travel for ID purposes. You do not need a passport — a driver's license or state ID works. These are U.S. territories, so no international document is required.

However, if you are not a U.S. citizen, the rules change. Non-citizens traveling to U.S. territories by air must carry a passport or other travel document that proves their immigration status. A green card works. A work visa works. A state driver's license does not prove citizenship, so non-citizens cannot use it alone.

When you do need a passport

A passport becomes necessary the moment you cross a U.S. border. Flying to Canada, Mexico, or the Caribbean requires a passport book or passport card. Driving to Canada or Mexico requires a passport, passport card, enhanced driver's license, or NEXUS card. Cruising to a foreign port requires a passport book (the card does not work for cruises).

Even a short trip across the border counts. A day trip to Tijuana, a weekend in Toronto, or a cruise that stops in the Bahamas all require a passport. The only exception is land travel between the U.S. and Canada or Mexico if you have an enhanced driver's license or a NEXUS card, which are special documents that prove citizenship.

Real ID compliance and domestic travel

Starting in May 2025, the TSA will require all domestic air travelers to have either a Real ID-compliant driver's license, a passport, a military ID, or another document on the TSA's approved list. Most states have already issued Real ID licenses, which have a small star or marking in the upper right corner.

If your driver's license does not have this marking, you can still fly domestically — you just need to bring an additional document. A passport, passport card, military ID, or tribal ID will work. You do not need to rush to get a Real ID license unless you prefer to carry only one document at the airport.

Check your state's DMV website to see whether your current license is Real ID-compliant. If it is not and you want to upgrade, you can do so at your local DMV office. The process usually takes a few weeks, and you will need to bring proof of citizenship, such as a birth certificate or passport.

Traveling by car, train, or bus within the U.S.

No ID is required to drive your own car between states. You do not need to carry your license while driving, though it is illegal to drive without one in your possession. For road trips, a driver's license is useful for hotel check-ins and rental cars, but not for crossing state lines themselves.

Amtrak trains do not require ID for domestic travel. You can board with just your ticket. However, you will need an ID to check in at the station and to board if you have a reservation under a different name than the ticket shows.

Greyhound and other intercity buses do not require ID for domestic travel either. You board with your ticket. Some regional bus systems may ask for ID, so check with your specific carrier before traveling.

Frequently Asked Questions

Can I use an expired driver's license for domestic flights?

Generally no, but the TSA made temporary exceptions for IDs that expired during the pandemic. Check the TSA website for the current expiration grace period. Otherwise, your ID must be valid. An expired passport card or military ID also will not work.

Do I need a passport to fly to Hawaii or Alaska?

No. Hawaii and Alaska are U.S. states, so domestic ID rules explore. A driver's license or state ID is sufficient. You need a passport only if you are flying from Hawaii or Alaska to a foreign country.

What if my name has changed since my ID was issued?

Your ticket name should match your ID name. If you recently married or changed your name legally, update your ID before flying, or bring a marriage certificate or court order showing the name change. The TSA can verify the change at security, but it may slow you down.

Can I use a passport card instead of a full passport for domestic flights?

Yes. A passport card is a valid form of ID for domestic air travel. However, if you are planning international travel, note that passport cards cannot be used for cruises or air travel outside the U.S. — only the full passport book works for those.

Do children need ID for domestic flights?

Children under 18 do not need to show ID if they are traveling with an adult. The adult must have valid ID. If a child is traveling alone or with someone other than a parent or legal guardian, bring a birth certificate or custody documents to prove the relationship.