Travel Explained
REAL ID vs. Passport: What Do You Actually Need to Fly?
A REAL ID and a passport can both get you through airport security for domestic flights, but they serve different purposes—and only one allows you to travel internationally.
Airports, Security & Identification • Travel Explained
The Quick Answer
For domestic U.S. flights, adults need a REAL ID-compliant license or another TSA-accepted form of identification, such as a passport.
A passport works for both domestic and international travel, while a REAL ID only satisfies federal identification requirements for domestic airport security and certain federal facilities. Since May 7, 2025, standard state licenses that are not REAL ID-compliant are no longer accepted by TSA as valid identification for domestic flights.
When You Need a REAL ID—and When You Need a Passport
A REAL ID is a state-issued driver’s license or identification card that meets federal security standards. Since May 7, 2025, adults flying within the United States must present a REAL ID-compliant license or another form of identification accepted by the Transportation Security Administration.
A passport book also works at domestic TSA checkpoints, so travelers who already have one do not need a REAL ID solely to board a domestic flight. The main difference is that a REAL ID is intended for domestic identification, while a passport book is the document U.S. citizens generally need for international air travel.
A passport card is slightly different. It is accepted as REAL ID for domestic flights, but it cannot be used for international air travel. It is primarily valid for certain land and sea travel between the United States and Canada, Mexico, Bermuda, and the Caribbean.
Travelers should also check whether their license is actually REAL ID-compliant rather than assuming every newer license qualifies. Compliant cards usually have a star or another approved marking near the top, although the exact appearance varies by state. Travelers without a REAL ID can instead use another document from the TSA’s official list of acceptable identification.
Children under 18 generally do not need to show identification when traveling domestically with an adult, although airlines may have separate requirements. International trips are different: children need the documentation required by the destination and form of travel, including their own passport when one is required.
The practical rule is simple: use a REAL ID or another TSA-approved document for domestic flights, and bring a valid passport book for international air travel.
At a Glance
REAL ID vs. passport
Both documents can work at a domestic TSA checkpoint, but they are not interchangeable for every type of trip.
State-Issued Identification
REAL ID
Domestic U.S. flights: Yes
International flights: No
Issued by: Your state
Best for: Everyday identification and domestic travel
Federal Travel Document
Passport Book
Domestic U.S. flights: Yes
International flights: Yes
Issued by: U.S. Department of State
Best for: International travel and an alternative domestic ID
What Applies to You?
What identification do you need for your trip?
The correct document depends on where you are traveling and the type of identification you already have.
Flying within the U.S.
Bring a REAL ID-compliant license, passport, passport card, Global Entry card, or another form of identification accepted by TSA.
Flying internationally
Bring a valid passport book. A REAL ID or passport card cannot replace a passport book for international air travel.
Your license is not REAL ID
You may still fly domestically by presenting a passport or another TSA-accepted document instead of your standard license.
Traveling with a child
Children under 18 generally do not need identification for domestic TSA screening, but international travel usually requires their own passport.
Before You Go
Check your identification before airport day
A few quick checks can prevent confusion or delays at the airport.
A passport can replace a REAL ID for domestic screening, but a REAL ID cannot replace a passport for international air travel.
One More Distinction
Passport book vs. passport card
Passport book
Works for domestic TSA screening and international travel by air, land, or sea, subject to the destination’s entry requirements.
Passport card
Works for domestic TSA screening and limited international travel by land or sea, but it cannot be used for international flights.
Common Mistakes
Identification mix-ups to avoid
Assuming every state license is a REAL ID. A standard license may look current while still lacking federal REAL ID compliance.
Thinking a passport is required for domestic travel. It is accepted, but a REAL ID or another approved document also works.
Using a passport card for an international flight. The card is not valid for international air travel.
Checking only TSA requirements. Airlines and international destinations may have additional documentation rules.
Key Takeaways
REAL ID and passport rules, explained simply
A REAL ID works for domestic flights. It satisfies federal identification requirements at TSA checkpoints.
A passport book works for domestic and international flights. It can be used instead of a REAL ID at TSA.
A passport card does not work for international flights. Its international use is limited to eligible land and sea travel.
Children follow different domestic rules. Minors generally do not need identification for TSA screening when traveling with an adult.
Frequently Asked Questions
REAL ID vs. passport FAQ
Can I use my passport instead of a REAL ID?
Yes. A valid passport book or passport card is accepted by TSA for domestic airport security screening.
Do I need a passport to fly within the United States?
No. Adults can use a REAL ID-compliant license or another document accepted by TSA. A passport is one option, not the only option.
Can I fly domestically without a REAL ID?
Yes, provided you present another accepted document such as a passport, passport card, Global Entry card, military ID, or another TSA-approved form of identification.
Can a passport card be used at the airport?
It can be used as identification for domestic TSA screening, but it cannot be used for international air travel.
Do children need a REAL ID to fly?
TSA generally does not require children under 18 to provide identification for domestic travel when accompanied by an adult. Airlines may apply their own rules.
Does a REAL ID replace a passport?
No. A REAL ID can be used for domestic airport identification, but it does not authorize international travel or replace a passport book.
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