You do not need a passport to fly between U.S. states

A passport is not required for domestic flights — flights that stay within the United States. You can fly from New York to California, from Texas to Florida, or between any two U.S. states using only a state-issued ID. The Transportation Security Administration (TSA) accepts several forms of identification at airport security checkpoints, and a passport is not one of them.

What you do need is a Real ID-compliant document or an alternative form of identification that TSA accepts. This is the actual requirement that affects most domestic travelers. A standard driver's license from most states now meets this standard, though some older licenses do not.

The confusion often arises because passports are valid identification for flying domestically — they work fine if you have one — but they are not necessary. Many people assume that because passports are used for international travel, they must be used for all air travel. That is not the case.

Key Takeaways

  • A passport is not required for domestic flights within the United States; a state driver's license or other TSA-accepted ID is sufficient.
  • Your ID must be Real ID-compliant (marked with a gold star or similar indicator) or you must bring an alternative document that TSA accepts.
  • TSA accepts military IDs, tribal IDs, permanent resident cards, and several other forms of identification if your driver's license is not Real ID-compliant.
  • If you are flying to U.S. territories like Puerto Rico or the U.S. Virgin Islands, you still do not need a passport, but you do need a valid ID.
  • International flights — to Canada, Mexico, or any country outside the U.S. — require a passport or other travel document, depending on your destination.

What TSA actually accepts at security checkpoints

The TSA maintains a list of documents that work for domestic air travel. A Real ID-compliant driver's license is the most common choice. Most states have switched to Real ID licenses, which display a gold star, gold circle, or similar marking in the upper right corner. If your license has that marking, you are set for domestic flights.

If your driver's license is not Real ID-compliant — usually because it was issued before your state upgraded to Real ID standards — you have other options. A military ID, a passport, a permanent resident card (green card), a tribal ID, or a U.S. passport card all work at TSA checkpoints. You can also use a state ID card (not a driver's license) if it is Real ID-compliant.

The key point: you need one valid form of identification. A passport satisfies this requirement, but so do several other documents. Bringing a passport is not wrong — it straightforward is not the only way or the required way.

How to check if your driver's license is Real ID-compliant

Look at your driver's license. In the upper right corner, check for a gold star, gold circle, or similar marking. Some states use different symbols — a few use a gold eagle or a gold outline — but the marking is always in that corner. If you see it, your license is Real ID-compliant and works for domestic flights.

If your license does not have the marking, it was issued before your state completed its Real ID upgrade. You can still fly domestically, but you will need to bring one of the alternative documents listed above — a passport, military ID, green card, or tribal ID.

If you are unsure whether your state has upgraded or what the marking looks like, visit the TSA website or your state's Department of Motor Vehicles website. Both have photos of what Real ID compliance looks like in your state.

Flying to U.S. territories without a passport

U.S. territories — Puerto Rico, the U.S. Virgin Islands, Guam, and American Samoa — are part of the United States. Flights to these destinations are considered domestic flights by the TSA. You do not need a passport to fly there. A Real ID-compliant driver's license or other TSA-accepted ID is sufficient.

However, some territories have their own entry requirements. Puerto Rico and the U.S. Virgin Islands do not require a passport for U.S. citizens, but they do require a valid ID. Guam and American Samoa have different rules depending on your citizenship status. Check the territory's official website before you book to confirm what documents you need to bring.

When you do need a passport for air travel

A passport becomes necessary when you fly outside the United States. Any flight to Canada, Mexico, the Caribbean, Central America, South America, Europe, Asia, Africa, or anywhere else outside U.S. borders requires a passport (or, in some cases, other travel documents like a passport card or a Real ID-compliant enhanced driver's license for Canada and Mexico).

Some countries also require a visa in addition to a passport. A visa is a separate document that grants you permission to enter that country. The passport is your proof of citizenship; the visa is the country's permission to let you in. Not all countries require visas from U.S. citizens, but many do. Check the State Department website for the specific country you plan to visit.

If you do not have a passport and are planning international travel, you will need to explore for one. The process takes several weeks to several months, depending on how busy the passport office is and whether you pay for expedited processing.

What to bring to the airport for a domestic flight

Bring one valid form of identification. A Real ID-compliant driver's license is the easiest choice for most people. If your license is not Real ID-compliant, bring a passport, military ID, green card, tribal ID, or state ID card instead.

Arrive at the airport early — the TSA recommends two hours before a domestic flight — so you have time to go through security. Have your ID ready when you reach the checkpoint. The TSA agent will scan or examine your ID and compare it to your face. That is the entire process for domestic flights.

Do not assume you need anything beyond a valid ID. You do not need a passport, a visa, or any other travel document for domestic flights. If you have a passport and want to bring it, that is fine — it works as identification — but it is not required.

Frequently Asked Questions

Can I fly domestically with just a passport and no driver's license?

Yes. A passport is a valid form of identification for TSA security checkpoints. If you do not have a driver's license or your license is not Real ID-compliant, a passport works perfectly for domestic flights.

What if I lost my ID and my flight is in two days?

You can still fly. Bring two pieces of secondary identification — a credit card, a birth certificate, a Social Security card, or a utility bill with your name and address. TSA will ask additional security questions, but you can proceed through the checkpoint. Contact your state's DMV when ready to get a replacement ID for future flights.

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

No. Hawaii and Alaska are U.S. states, so flights there are domestic. A Real ID-compliant driver's license or other TSA-accepted ID is all you need. A passport is not required.

Is a passport card the same as a passport book for flying?

For domestic flights, both work equally well — they are both valid TSA identification. For international flights, a passport card works for land and sea travel to Canada, Mexico, Bermuda, and the Caribbean, but not for air travel to most other countries. A passport book is required for air travel to most international destinations.

Can I use an expired ID to fly domestically?

No. Your ID must be valid and not expired. If your ID expired, you will need to renew it before you fly. An expired passport, driver's license, or military ID will not work at the TSA checkpoint.