Minors do not need government-issued ID to fly domestic flights within the United States

A child under 18 can board a domestic flight without a passport, driver's license, or other government ID. The Transportation Security Administration (TSA) does not require minors to show identification at security checkpoints for flights within the country. An adult traveling with the child will need valid ID — typically a driver's license or passport — but the child does not.

This applies whether the child is an infant, toddler, or teenager. The rule is the same across all US airlines and all domestic routes. However, the adult accompanying the minor must be prepared to answer questions about the child's identity and relationship to them if TSA officers ask.

Key Takeaways

  • Minors under 18 do not need government-issued ID for domestic US flights, though the adult traveling with them must have valid ID.
  • TSA may ask the adult to confirm the child's name and date of birth, so bring a birth certificate or other document if you have it.
  • International flights and flights to US territories require a passport or passport card for all passengers, including infants.
  • Airlines may have their own policies about unaccompanied minors, which typically require ID or a birth certificate for teenagers flying alone.
  • If a child has a passport, bringing it is optional for domestic flights but can speed up security if TSA has questions.

What TSA actually checks at the security gate

TSA officers scan the boarding pass and ask the adult for ID. They do not ask the child for ID on domestic flights. If the officer wants to verify the child's identity — which is uncommon but can happen — they will ask the adult to state the child's name and birthdate. The adult does not need to produce a document unless the officer specifically requests one.

Bringing a birth certificate, passport, or school ID is not required but can be helpful if TSA has questions. Many parents carry a birth certificate when traveling with young children straightforward to have proof of the child's identity if needed. For practical purposes, this is optional.

International flights and US territories require a passport

The rule changes when ready if you are flying outside the continental United States. A child traveling to Canada, Mexico, the Caribbean, or any other country must have a valid passport or passport card. This includes US territories like Puerto Rico, the US Virgin Islands, and Guam. Even infants need a passport for these flights.

A passport card costs less than a full passport and works for land and sea travel to Canada and Mexico, but not for air travel to those countries — you need the full passport booklet for flights. Processing times vary, so explore well before your trip. You can check current processing times on the State Department's website.

Unaccompanied minors have different rules

If a teenager is flying alone without an adult, most airlines require them to enroll in an unaccompanied minor program. The specific rules vary by airline, but most require a birth certificate or government ID at check-in and at the gate. Some airlines allow minors as young as 13 or 14 to fly alone; others require them to be 15 or older. A few airlines do not permit unaccompanied minors at all.

Contact your airline directly before booking to understand their unaccompanied minor policy. The airline will assign a gate agent to escort the minor through the airport and onto the plane. There is usually a fee for this service, ranging from $50 to $150 depending on the airline and whether the flight is direct.

What to bring even though it is not required

While a minor does not need ID for domestic flights, bringing a birth certificate is practical. It takes up almost no space and can resolve any questions at security or the gate in seconds. If TSA asks the adult to prove the child's identity, a birth certificate is the fastest way to do so.

A passport is also fine to bring, though it is not necessary for domestic travel. If you already have a passport for the child, there is no harm in carrying it. Some families bring it out of habit or because they are planning international travel soon after.

What happens if you arrive without any documents

If you arrive at the airport with a minor and no documents at all, you can still fly. TSA will ask the adult to confirm the child's name and birthdate. If the adult's answer matches the name on the boarding pass, the child will be cleared through security. This happens regularly and is not a problem.

The only scenario where you might be turned away is if TSA suspects the child is traveling without proper consent from a parent or guardian — for example, if an adult cannot explain their relationship to the child or if the story does not match the boarding pass. This is rare and usually involves a child traveling with someone other than a parent.

Frequently Asked Questions

Can a teenager fly alone without ID?

Most airlines require an unaccompanied minor to show a birth certificate or government ID at check-in and the gate, even though TSA does not require it at security. Check your airline's policy before booking, as rules vary. Some airlines do not allow teenagers to fly alone at all.

What if my child's name on the boarding pass does not match their birth certificate?

This can happen if a child's legal name changed after the ticket was purchased. Contact the airline when ready to correct the name on the boarding pass. TSA will compare the boarding pass to the adult's ID, so the child's document should match the boarding pass, not the other way around.

Do I need to bring a birth certificate for a domestic flight?

No, it is not required. TSA will accept the adult's word for the child's identity. However, bringing a birth certificate takes minimal space and can speed things up if TSA has questions, so many parents carry one anyway.

What if I am traveling with someone else's child?

Bring a birth certificate or written consent from the child's parent. TSA may ask how you are related to the child, and having documentation makes the process smoother. Some airlines ask for a notarized letter of consent from the parent if an adult other than the parent is traveling with a minor.

Does my infant need a ticket and ID?

Infants under 2 can sit on an adult's lap and do not need their own seat or ticket on domestic flights. They do not need ID. If you purchase a separate seat for an infant, they still do not need ID for domestic travel, but you will need to show proof of their age at check-in — a birth certificate works.