Children 2 or older are required to have their own seat, a ticketed adult fare. Children under 5 can't travel alone under any circumstances.
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Passport and Photo I.D.
Children don't usually need a passport or photo I.D. for domestic flights; however, it's not a bad idea to have photo identification for your children when you travel together. All airlines require the same documentation for children as they would for an adult on international flights.
Typically, minors under the age of 18 do not have to present identification for domestic U.S. travel. Airlines will accept identification from the responsible adult on behalf of the minor(s). For international travel, minors under the age of 18 must present the same travel documents as the adult.
Who can fly alone? Most U.S. airlines will permit children who have reached their fifth birthday to travel unaccompanied. Kids ages 5 through 11 who are flying alone must usually travel pursuant to special “unaccompanied minor” procedures.
If you are flying domestically and your baby will be flying as a lap child, you may be asked for proof at check-in that they are indeed younger than 2 years old. If your child is flying domestically on their own ticket (not as a lap child) they probably won't need any sort of ID until they are 18 years old.
Infants under 2 years old can travel at no charge in the lap of their parent (any age), or an accompanying adult 16 years or older traveling in the same cabin. We welcome infants as young as 2 days old, but infants less than 7 days old require a 'Passenger Medical' form to be completed before your flight.
You may bring your child's car seat and stroller free of charge as checked baggage. You can check these items with your other baggage, or wait until you reach the gate area. Strollers can be checked at the gate or with your regular checked baggage at the ticket counter.
Children traveling with grandparents, cousins, other relatives, or school groups will need to have a signed document, such as a Child Travel Consent, allowing them to travel without a parent or legal guardian.
Children who are under 16 years old and U.S. citizens may travel with their original U.S. birth certificate with the raised seal. Children who are 16 and older, and are U.S. citizens, are required to travel with photo ID.
Parents/guardians should remove infants and children from strollers and car seats and carry them in their arms through the walk-through metal detector. Infants may be carried in a sling/carrier through the walk-through metal detector. Children will not be separated from their parent/guardian.
Each airline will have its rules about who can sit where, but a bulkhead seat is generally considered an excellent option for families traveling with young children. The bulkhead is at the front of the cabin and sitting in those seats usually guarantees you some extra leg room.
Even better, car seats are not usually counted as luggage, so you don't have to pay a fee to check them! The same goes for booster seats; even though they cannot be used on the plane, they are typically considered checked baggage free of charge.
To prove your child's age to an airline, one of the following documents will suffice: Child's passport (how to get a U.S. passport for an infant and things to know about children's passports) Child's birth certificate. Child's immunization form or other medical records may also work domestically.
Passport and Photo I.D.Children don't usually need a passport or photo I.D. for domestic flights; however, it's not a bad idea to have photo identification for your children when you travel together. All airlines require the same documentation for children as they would for an adult on international flights.