Yes, you can fly domestically with a passport, but it's not your best option

A passport works as a valid form of identification for domestic flights within the United States. The Transportation Security Administration (TSA) accepts it at airport security checkpoints. However, a passport is not the document TSA recommends for domestic travel, and using one has real drawbacks you should understand before you book.

The TSA maintains a list of acceptable Real ID documents for domestic flights. A passport appears on that list, but so do driver's licenses, state ID cards, and military IDs — all of which are faster to present and less risky to carry. A passport is a travel document designed for international border crossings. Using it for a domestic flight means carrying a document you need for overseas trips through airport security and onto a plane, where it could be lost, stolen, or damaged.

Key Takeaways

  • A valid passport satisfies TSA requirements for domestic flights, but a state-issued ID or driver's license is the standard choice.
  • Carrying your passport on a domestic flight exposes it to loss or damage when you could use a simpler document instead.
  • For international flights, your passport is required and must be valid for at least six months beyond your travel dates in most countries.
  • If your passport is expired, it cannot be used for any flight, domestic or international.
  • TSA PreCheck and Global Entry programs accept passports as proof of identity during enrollment, but they do not change what you need to fly.

What TSA actually accepts at security checkpoints

The TSA accepts a specific set of documents at airport security for domestic flights. A valid U.S. passport is one of them. A state-issued driver's license or ID card is another. A military ID, tribal ID, or passport card also work. You need only one of these documents — you do not need to bring multiple forms of ID.

The word "valid" matters. An expired passport will not get you through security, even for a domestic flight. If your passport expired, you would need to renew it before flying, which takes time. A state driver's license or ID card is simpler to renew in most states and does not require you to carry an international travel document for a domestic trip.

Why a passport is riskier for domestic flights

A passport is a document you need to leave the country and to enter other countries. Carrying it through an airport, through security, and onto a plane means exposing it to theft, loss, or damage. If your passport is stolen or lost during domestic travel, you cannot replace it quickly. A passport replacement takes weeks, even with expedited processing. If you have international travel planned, a lost passport becomes a serious problem.

A state driver's license or ID card is designed for everyday use and travel within the United States. It is smaller, easier to replace if lost, and does not open doors to identity theft the way a passport can. For a domestic flight, using your driver's license keeps your passport safe at home.

International flights and passport requirements

For any flight leaving the United States, a passport is required. You cannot board an international flight with a driver's license or state ID, no matter how valid it is. Your passport must be valid on the day you travel. Many countries also require that your passport be valid for at least six months after your planned return date — check the specific country's entry requirements before you book.

If your passport is expired or will expire soon, renew it before booking international travel. Standard renewal takes four to six weeks. Expedited renewal takes two to three weeks but costs more. If you are traveling within two weeks and your passport is not valid, you may not be able to travel internationally at all.

Passport cards and what they do

A passport card is a smaller, wallet-sized version of a passport. It is valid for land and sea travel to Canada, Mexico, Bermuda, and the Caribbean. It is not valid for air travel to those countries or anywhere else outside the United States. A passport card works at TSA security for domestic flights, just like a full passport does, but it does not replace a full passport for international air travel.

If you travel frequently by car or boat to Mexico or Canada, a passport card is useful and cheaper than a full passport. For any international flight, you need a full passport book, not a card.

What happens if you arrive at security without acceptable ID

If you reach the TSA checkpoint without a passport, driver's license, or other acceptable ID, you will not be allowed through security. TSA officers can conduct additional screening, but they cannot waive the ID requirement. You will miss your flight.

If this happens, contact your airline when ready. Some airlines will rebook you on a later flight at no charge if the delay was your responsibility. Others will charge a rebooking fee. Policies vary by airline and ticket type. The safest approach is to check that you have your ID before you leave home — not at the airport.

Real ID compliance and what it means for your documents

The TSA enforces a federal standard called Real ID for domestic flights. A Real ID-compliant driver's license has a star or marking on it. A passport is automatically Real ID-compliant because it is a federal document. A state ID card may or may not be compliant depending on when it was issued and which state issued it.

If your driver's license does not have the Real ID marking and was issued before your state began issuing Real ID licenses, you can still use it for domestic flights. The TSA accepts both Real ID and non-Real ID documents. The Real ID requirement has been in place since 2009 and has not changed the documents you can use — it has only clarified which state IDs meet federal standards.

Frequently Asked Questions

Can I fly domestically with an expired passport?

No. An expired passport is not valid for any flight, domestic or international. You must renew it before you travel. Standard renewal takes four to six weeks; expedited renewal takes two to three weeks but costs more.

Do I need my passport for a flight to Hawaii or Alaska?

No. Hawaii and Alaska are U.S. states. Flights to them are domestic flights. A driver's license, state ID, or valid passport all work. You do not need a passport unless you are traveling outside the United States.

What if I lost my passport and need to fly internationally next week?

You cannot get a new passport in one week through normal channels. Expedited renewal takes two to three weeks. If you need to travel sooner, contact your airline about cancellation or rebooking options. Some travel insurance policies cover trip cancellation, though you would need to have purchased the policy before your passport was lost.

Is a passport card good enough for flying to Mexico?

A passport card is not valid for air travel to Mexico, even though it is valid for car or boat travel there. For any flight to Mexico, you need a full passport book. A passport card cannot be used as a substitute.

Can TSA PreCheck let me use a passport instead of a driver's license?

TSA PreCheck does not change what documents you can use at security. You still need one acceptable form of ID — a driver's license, passport, or other document on the TSA list. TSA PreCheck speeds up the screening process itself, but it does not replace the ID requirement.