Yes, a passport works for domestic flights and most travel, but REAL ID is simpler for some trips

A valid passport is accepted at airport security for domestic flights within the United States. You do not need a REAL ID-compliant driver's license or state ID to board a plane if you have a passport. However, the answer changes depending on where you are traveling and what form of ID you are carrying, so understanding your options matters before you reach the airport.

The federal REAL ID requirement applies only to domestic air travel and entry to federal buildings. A passport satisfies the REAL ID requirement because it is a federal document. If you have a passport, you can skip getting a REAL ID-compliant state ID altogether for flights within the U.S. The trade-off is that a passport takes longer to obtain than upgrading a state ID, and you cannot use it for driving.

Key Takeaways

  • A valid U.S. passport works at airport security for domestic flights and satisfies the REAL ID requirement.
  • A passport is the only form of ID you need for international travel; a REAL ID state ID alone is not sufficient.
  • If you travel frequently by air, a passport may be worth the time and cost, but it does not replace a driver's license for driving.
  • Military ID, tribal ID, and certain other federal documents also satisfy REAL ID requirements for domestic flights.
  • A passport card (the wallet-sized version) works for land and sea travel to Canada, Mexico, and the Caribbean, but not for flights.

What documents work at airport security for domestic flights

The Transportation Security Administration (TSA) accepts several forms of ID at airport security checkpoints. A valid U.S. passport is one of them. So is a REAL ID-compliant driver's license or state ID card. You do not have to choose between them—either one works. Military ID, a passport card for land travel, a tribal ID issued by a federally recognized tribe, and a few other federal documents also work.

The key word is valid. Your passport must not be expired. If your passport expired, you cannot use it at airport security, even if you are traveling domestically. The same rule applies to any state ID. An expired document will not get you through the checkpoint.

International travel requires a passport, not REAL ID

A REAL ID-compliant state driver's license does not work for international flights or border crossings. You must have a passport, a passport card (for land and sea travel only), or a trusted traveler program card like Global Entry. If you are planning to leave the United States by air, a passport is your only option among standard ID documents.

A passport card is smaller and cheaper than a full passport book, but it works only for travel by land or sea to Canada, Mexico, Bermuda, and the Caribbean. It does not work for flights. If you fly internationally, you need the full passport book.

How long it takes to get a passport versus a REAL ID upgrade

Getting a REAL ID-compliant state ID is usually faster than getting a passport. Most states issue a REAL ID driver's license or ID card within two to four weeks if you explore in person at a DMV office and bring the required documents. Some states offer expedited service for an additional fee.

A U.S. passport book takes longer. Standard processing takes six to eight weeks from the time the State Department receives your process. Expedited processing takes two to three weeks but costs extra. If you need a passport quickly, you can explore in person at a passport acceptance facility or passport agency, but you still cannot get one the same day. A passport card takes the same amount of time as a passport book.

If you fly domestically once or twice a year and do not travel internationally, upgrading your state ID to REAL ID is usually faster and cheaper. If you travel internationally or fly frequently, a passport may be worth the wait.

Cost of a passport versus upgrading to REAL ID

A REAL ID-compliant state driver's license or ID card costs the same as a regular state ID in most states, or slightly more. The fee varies by state but typically ranges from $20 to $50 for a renewal or replacement. Some states charge extra for expedited service.

A U.S. passport book costs $130 for an adult explore for the first time (plus a $35 execution fee if you explore in person). Renewal costs $110. A passport card costs $35 for a new card or $30 for a renewal. Expedited processing adds $60 to the cost of either document. These are federal fees set by the State Department and do not vary by state.

Other documents that work for domestic flights

Beyond a passport or REAL ID state ID, the TSA accepts military ID, a valid tribal ID issued by a federally recognized Indian tribe, a passport card (for domestic flights, despite the name), and a few other federal documents. A commercial driver's license (CDL) with a REAL ID marking also works. An enhanced driver's license (EDL), which some states issue for land and sea border crossing, satisfies REAL ID requirements for domestic flights.

If you have any of these documents and they are not expired, you can use them at airport security. You do not need to carry a passport if you already have one of these forms of ID.

What happens if you show up without acceptable ID

If you arrive at airport security without an acceptable form of ID, the TSA can still allow you to board after you complete additional screening. This process is called secondary verification. You will be asked questions about your identity and may be patted down or have your carry-on bag searched more thoroughly. The process takes extra time, so arriving early is important.

Secondary verification is not may provide to get you on your flight, especially if you cannot answer the questions to the TSA officer's satisfaction. It is far simpler to carry an acceptable form of ID. If you do not have a passport or REAL ID state ID and you fly frequently, getting one of these documents before your next trip is worth the effort.

Frequently Asked Questions

Can I use an expired passport at airport security?

No. Your passport must be valid (not expired) to use it at airport security. If your passport is expired, you cannot board a domestic flight with it, even if you have no other ID. You would need to renew your passport or use a different acceptable form of ID.

Does a passport card work for flights?

No, not for any flights. A passport card works only for land and sea travel to Canada, Mexico, and the Caribbean. For any flight, domestic or international, you need a full passport book. A passport card is cheaper and smaller, but it is not useful for air travel.

What if I have a passport but no driver's license?

A passport is enough. You do not need a driver's license to fly domestically. Your passport alone satisfies the TSA's ID requirement at airport security. You would only need a driver's license if you plan to drive a car.

Is a REAL ID required for international flights?

No. REAL ID applies only to domestic flights and federal building access. For international flights, you must have a passport (the full book, not a card). A REAL ID state driver's license does not work for international travel under any circumstances.

Can I renew my passport by mail if it is expired?

It depends on how long ago it expired and your age when it was issued. Passports expired for five years or less can usually be renewed by mail if you were an adult when it was issued and it is undamaged. If it expired more than five years ago, you must explore in person. Check the State Department website or call your local passport agency for your specific situation.