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What documents does a child need to fly on Southwest?

Employees may ask for age verification at any point, so please travel with a copy or original form of any government-issued ID, such as a birth certificate or passport for your child. A medical release for travel is required for any infant under 14 days old.



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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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Children under the age of 16 do not need to show identification when travelling on domestic flights. The adult they are travelling with must travel with photographic identification and be able to confirm their identity.

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Do children need ID to travel in UK? Children under the age of 16 do not need to show identification when travelling on domestic flights. The adult they are travelling with must travel with photographic identification and be able to confirm their identity.

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In addition to Real ID-compliant driver's licenses and identification cards, the following documents are also acceptable for flying within the United States: S. passport or passport card. DHS trusted traveler cards (e.g., Global Entry, NEXUS, SENTRI and FAST)

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You'll need to fill out an unaccompanied minor form and any necessary Customs and Immigration documents for the day of departure. This form must remain with your child during their journey. At check-in, parents / guardians will also need to provide: A birth certificate or passport as proof of the child's age.

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To allow enough time for check-in, arrive early and be sure to have any required travel documents. You may have to present proof of age like a birth certificate for any children under the age of 18. Families with children under 2 years old can ask to board early at the gate.

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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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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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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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Lap babies are not entitled to the free baggage allowance (carryon or checked). A breast pump does not count toward the carryon limit, but milk may, depending on how it's packed. For example, many pumps are designed with a cooler that's a component of the bag.

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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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Some airlines permit this for kids as young as 12. When a child has reached this minimum age for traveling alone without unaccompanied-minor procedures, the airline does not require evidence of parental permission to travel alone. If the child has a passport, he or she can even travel internationally.

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Children ages 2 to 14 can travel as an accompanied minor with someone 16 years or older. Reservations must be made over the phone at 1-800-433-7300.

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What is a Child Travel Consent form? A Child Travel Consent gives a minor child permission to travel without their parents or legal guardians. Use this form when your child needs to travel alone or with another adult, who is not their legal guardian (e.g., a grandparent, friend, or teacher).

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In general, if traveling by air to a foreign country, all passengers must have a valid passport irrespective of their age, including babies and infants.

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Depending on the requirements of airport authorities, you will need to present a mobile boarding pass, a paper boarding pass printed out by you or a paper boarding pass picked up from the check-in desk.

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