What Do Kids Need to Fly in the U.S.?
Key Takeaways
- For domestic U.S. flights, TSA does not require minors under 18 to show identification at security checkpoints when traveling with an adult who has acceptable ID.
- Children flying internationally generally require the same travel documents as adults, including a valid passport and any required visas or entry permits.
- A child travel consent form is commonly helpful when a child travels internationally with one parent, a grandparent, or another responsible adult who is not the child's legal guardian.
- Proof-of-relationship documents such as birth certificates, adoption papers, or custody orders can help explain your connection to a child, especially when last names differ or during international travel.
For domestic flights, minors under 18 typically do not need ID at the airport, although airlines may have their own procedures. For international trips, children generally need the same travel documents as adults, so you should confirm airline rules, destination requirements, and any child-specific paperwork before you travel.
Do Kids Need ID to Fly Within the U.S.?
For domestic U.S. travel, the TSA says that “minors under the age of 18 do not have to present identification” at the TSA checkpoint when they travel with an adult who has acceptable identification. The FAA explains the airline side of the process, and each airline determines identification requirements for minors, so you should review your airline’s rules before you leave for the airport.
That means the responsible adult’s documents usually matter more than the child’s for domestic U.S. travel. Even when a child does not need ID for the TSA checkpoint, an airline may ask for reservation information, proof of age for a baby or lap infant, or other acceptable identification during check-in.
Travel scenario | Does the child usually need ID? | What the adult should carry | Who sets the rule |
Domestic U.S. travel with a parent or other responsible adult | Usually no at the TSA checkpoint | The adult’s acceptable identification and trip details | TSA for screening, plus the airline for check-in |
Domestic U.S. travel with a baby or lap infant | Usually no at the TSA checkpoint | The adult’s acceptable identification and any proof of age the airline requests | TSA for screening, plus the airline for check-in |
International travel | Usually yes | Passport and any required visa or entry documents | U.S. and destination-country rules, plus the airline |
International travel with one parent, a grandparent, or another adult | Usually yes | Passport, plus proof of relationship or child travel consent when helpful | U.S. and destination-country rules, plus the airline |
For a broader overview of domestic and international paperwork, use our travel documents checklist. If your trip crosses a border, children generally need the same travel documents as adults, and supporting paperwork may help explain who is traveling with them. . Before you travel, take time to review your airline's requirements and your destination's entry rules to make sure you have any child-specific documents that may be needed.
What Documents Do Kids Need for International Flights?
For international trips, children generally need the same travel documents as adults. Depending on the child’s last name, family situation, and who is accompanying them, you may also want documents that show your relationship to the child or permission to travel.
The most common documents fall into three categories:
Proof of Relationship for International Travel
Proof of relationship can be useful during international travel when your last name is different from the child’s, when divorce or custody arrangements affect the trip, when the child is adopted, or when a grandparent, stepparent, or another adult is traveling with the child. These documents help explain your connection to the child if an airline, border official, or destination authority asks questions.
This proof can take multiple forms, including:
- Birth certificates
- Marriage certificates or divorce papers
- Adoption documents
- Court orders
- Government-issued IDs (for the children)
Child Travel Consent for International Trips
A child travel consent form is commonly helpful when a child is traveling internationally with one parent, a grandparent, or another responsible adult. If you’re traveling with a child who is not legally yours, you’ll usually want signed permission from the child’s parents or legal guardians, and the same paperwork may help when a parent and child have different last names or when custody arrangements apply.
Consent-to-travel documents are official permission forms signed by a child’s parents or legal guardians that state it’s okay for the child to travel with you.
A child travel consent form should contain:
- The child’s basic information (name, gender, birthday, and place of birth)
- Both parents’ or legal guardians’ contact information
- The traveling arrangements
- The destination
Many travelers also choose to have these documents notarized, especially if more than one adult is traveling with a child who is not legally theirs. There is no single standard form for children traveling internationally with someone who is not their parent or guardian, so the document should match the child’s itinerary and family situation.
Passport Requirements for International Flights
The U.S. State Department is clear that children need a valid passport for international air travel. In general, kids need the same travel documents as adults for international flights, so check passport validity rules, visa requirements, and any transit-country rules before you leave.
- a valid passport
- any required visa or entry permit
- supporting documents, such as proof of relationship or consent, when your travel situation calls for them
Keep in mind that U.S. passports issued to children under 16 are generally valid for five years.
Destination-Specific Paperwork for International Travel
Some countries require additional paperwork for children who are entering or leaving with one parent or another adult, and dual citizenship can add another layer of complexity. Check the U.S. State Department and the relevant embassy before you travel.
The process has a lot of steps, but working through them early and one at a time makes it more manageable.
If you’re planning international travel with children, travel protection may help protect your trip against unexpected, covered events. Get a quote.
Frequently Asked Questions
Do Kids Need ID to Fly Domestically in the U.S.?
Usually, no. For domestic U.S. travel, TSA says minors under the age of 18 do not have to present identification at the TSA checkpoint, but the accompanying adult should carry acceptable identification, and the airline may have its own check-in procedures.
What Do Kids Need to Fly Internationally From the U.S.?
Children generally need the same travel documents as adults for international flights, including a valid passport and any required visas or entry documents. Depending on the trip, you may also want proof of relationship or a child travel consent form.
Can a Child Fly With a Grandparent or Other Adult?
Yes, but the responsible adult should carry the child’s itinerary and any paperwork that explains their authority to travel with the child. For international trips, a child travel consent form is commonly helpful.
What If the Child and Parent Have Different Last Names?
Carry documents that help show your relationship, such as a birth certificate, adoption paperwork, marriage records, divorce papers, or custody documents. This can be especially useful during international travel.
Do Babies or Lap Infants Need ID to Fly?
Not usually for domestic U.S. travel, but an airline may ask for proof of age for a baby or lap infant. If you’re preparing for the airport with younger children, our airport tips for parents may help.
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