What do I need for my 4 year old to fly?

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.



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Spirit Airlines reserves the right to request documented proof of age for any passenger 2 years of age or younger. You must be prepared to provide documentation (such as the child's birth certificate or passport) upon request.

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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.

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Planning your trip
  • Infants on lap. Children under two can sit on a parent's lap during flights to any destination.
  • Infant seats. Alternatively, infants can have their own seat if you bring an approved car seat.
  • All other kids. Children older than two will need a ticket and their own seat on the plane.


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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.

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A birth certificate or passport as proof of the child's age. The adult's government-issued photo ID with their current address. Your phone number so we can contact you. The name, address and phone number of the adult meeting your child at their destination.

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Strollers can be checked at the gate or with your regular checked baggage at the ticket counter. A stroller may be brought onboard without counting toward your carry-on limit. This is based on space availability; space guaranteed only with the purchase of a ticket for the infant).

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Remember: You can bring one personal item and bring items like an umbrella, camera, infant diaper bag, assistive devices, outer garments (e.g., coats, hats and wraps), reading material and food for the flight for no additional charge.

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Spirit currently has no official family seating policy. It only states that it can't guarantee that you'll sit with your friends and family if you don't purchase seat assignments; it says that gate agents will work to provide adjacent seats for guests flying with children aged 13 and under whenever possible.

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It is worth noting that lap infants are not entitled to their own carry-on luggage, and any diaper bags will be counted against the adult's baggage limit. However, car seats and strollers can be checked for free.

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The FAA recommends that children under 40 pounds continue to use a car seat and that children over 40 pounds use the seat belt on the airplane seat. The AAP recommends that you continue to use a car seat on a plane for any child who uses one in a car.

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Although children who have not reached their second birthday are permitted to travel as lap children, the FAA strongly discourages this practice and recommends that you secure your child in an approved CRS in their own seat for the entire flight.

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Yes, a 3-year-old generally requires their own flight ticket and seat. Airlines typically consider children above the age of 2 as individuals who need separate seating arrangements. It's essential to purchase a ticket for your 3-year-old to ensure they have a designated seat for the flight.

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Q: Will minors need to have driver's licenses/ identification cards to fly domestically? No. TSA does not require children under 18 to provide identification when traveling with a companion within the United States. The companion will need acceptable identification.

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A Child Travel Consent letter is a legal document that gives permission for minors to travel without their parents or legal guardian. If a child is traveling with an adult who is not their legal guardian, both the parents need to sign the consent letter.

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If you don't have any acceptable alternate form of ID, a TSA employee will ask you to complete an identity verification process by filling out a TSA Form 415, also known as a Certification of Identity form. It asks for your full name, current address, signature and date.

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Age: 0 to 2 Years Old
Unless your child already has a passport that can be used to prove their birth date, you may need to bring a copy of their birth certificate. While some airlines are more lenient than others, it's always best to come prepared.

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Q: What is the Southwest Family boarding age limit? A: In order to take advantage of Southwest family boarding, you'll need to be traveling with a child who is 6 years old or younger.

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Up to two adults traveling with a child six years old or younger may board during Family Boarding, which occurs after the “A” group has boarded and before the “B” group begins boarding. There should be enough open seats to enable the child to sit next to at least one accompanying adult.

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