A domestic boarding pass does not mean every driver's licence will work at security. Adults need identification accepted by TSA, and a valid US passport is one option. That makes the practical choice less about “REAL ID or passport?” and more about which accepted document you already have, can protect during the trip and will remember to bring.
What is REAL ID?
REAL ID is a US federal standard for state-issued driver's licences and identification cards. Compliant cards are usually marked with a star in the upper corner, although the exact design varies by state. To get one, you visit your state's licensing agency with documents proving your identity, Social Security number and address. A REAL ID is not a travel document: it does not let you enter another country.
IDs TSA commonly accepts
- A REAL ID-compliant driver's licence or state ID card.
- A US passport or US passport card.
- DHS trusted traveller cards, such as Global Entry or NEXUS.
- A US military ID or a permanent resident card.
- Certain foreign government-issued passports and other listed documents.
TSA publishes the full, current list on its website, and it can change. Check it before you fly rather than relying on memory or a friend's experience.
Passport or REAL ID: which should you use?
If you already have a valid passport and do not plan to upgrade your licence, you can use the passport for domestic flights. The downside is carrying a document that is expensive and slow to replace if lost. Many travellers prefer a REAL ID licence for everyday domestic travel and keep the passport for international trips. A passport card is a smaller option that TSA accepts domestically, but it cannot be used for international air travel.
If you are flying internationally, you need a passport regardless of your REAL ID status. Check that it has enough validity for your destination with our passport validity checker.
What if you arrive without an accepted ID?
TSA says travellers without acceptable identification may face additional identity checks and may be unable to pass the checkpoint if their identity cannot be confirmed. Procedures can change and take extra time. Do not treat this as a substitute for bringing an accepted document; check TSA's current instructions before leaving for the airport.
Children and domestic flights
TSA does not require children under 18 to show ID when travelling with an adult companion within the United States, though airlines may have their own rules, especially for unaccompanied minors or lap infants. For international trips, children need their own passports; our guide to travelling with children covers consent letters and other documents.
Choose the document before travel day
Open your wallet and inspect the actual card rather than relying on memory. If it is not REAL ID-compliant, place an accepted alternative with your travel items now. Travellers who use a passport domestically may also want a secure reminder to remove it from a jacket or day bag after the trip; replacing a lost passport is much harder than replacing a routine item left at security.
Cruises and land border crossings
REAL ID does not replace a passport for cruises or crossing into Canada or Mexico. Closed-loop cruises and land crossings have their own document rules, explained in our cruise passport guide and Mexico passport guide.
Official sources
- TSA — REAL ID
- TSA — Acceptable identification at the checkpoint
- Department of Homeland Security — REAL ID
TSA sets accepted-ID rules and may change its procedures. Check the current list on tsa.gov before travel, particularly if you plan to use a less common document.
What to do if your licence is not compliant yet
If your state licence does not show the REAL ID star marking and your travel date is close, the simplest fallback is a passport book or passport card. TSA also accepts certain other documents, such as trusted-traveller cards and permanent resident cards, but the list is specific and it changes, so read it on tsa.gov rather than relying on a summary like this one. The practical point is that you need one document from the accepted list — you do not need both a REAL ID licence and a passport for a domestic flight.
If you have already applied for a REAL ID and are waiting for the card to arrive, check with your state licensing agency whether the temporary paper document they issued is accepted for your purposes. Paper temporaries are generally not accepted at the checkpoint, which is exactly why travellers get caught out: the application is done, but the card is not in hand. Plan around the card you physically hold on the day of travel, not the one you have applied for.
A pre-flight document routine that avoids surprises
A week before any domestic flight, take the document you plan to use out of your wallet and check three things: the name matches your booking exactly, the document is not expired, and it is on TSA's current accepted list. If any of those three fails, you still have time to switch to a different document or fix the booking name. Leaving this check to the morning of the flight turns a solvable problem into a missed departure.
Finally, remember that REAL ID is about federal acceptance of state identification. It does not change what airlines require for check-in, and it has no role at all once your trip crosses a border. Treat it as one item on your document checklist, not as a travel document in its own right.
Children, names and other edge cases
TSA does not require children under 18 to show identification on domestic flights when travelling with an adult, though the airline may have its own rules, so check with the carrier. Name mismatches are the other common trap: if your booking says "Mike" and your document says "Michael", fix the booking with the airline well before departure rather than arguing about it at the checkpoint. Small mismatches are often tolerated, but you do not want your travel day to depend on an officer's discretion.