What age can kids fly free?

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.



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YOU WILL NEED TO PURCHASE A TICKET FOR YOUR CHILD IF YOU: Have a child that is 2 years old or older. Have a child that turns 2 during the trip. Prefer the child sit in a seat with an FAA-approved child safety seat. Already have a child that will be sitting in your lap, regardless of age.

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Infants or children under 2 years of age can travel on the lap of an adult for free (within the United States) or at a reduced fare (for international travel).

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We're here to take you and your family wherever you need to go. Infants or children under 2 years of age can travel on the lap of an adult for free (within the United States) or at a reduced fare (for international travel).

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YOU WILL NEED TO PURCHASE A TICKET FOR YOUR CHILD IF YOU: Have a child that turns 2 during the trip. Prefer the child sit in a seat with an FAA-approved child safety seat. Already have a child that will be sitting in your lap, regardless of age. Want your child to earn miles for their SkyMiles account.

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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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It is an FAA regulation that children aged 2 and older require their own ticket and seat. I recommend buying a ticket even for children under the age of 2 and strapping them into an airline approved carseat.

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If a child turns 2 years during the trip, they need to have a child ticket instead of infant ticket, due to the seating on the return flight.

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Babies under 2 years of age may fly on a parent's lap free of charge on domestic flights, or paying only the taxes and fees on international flights. If you would like your baby to fly in their own individual seat, rather than on your lap, Southwest airlines requires you to purchase an individual ticket for your child.

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The most important thing to note is that infants are welcome above the age of 3 days old and can fly as lap children until they turn 2 — just be sure to bring proof of age. Additionally, your lap child will be allowed to bring 1 diaper bag, 1 car seat, and 1 stroller for no extra cost. Checked bags are not included.

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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.

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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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A birth certificate or another form of identification with a birthdate is required to provide proof that they are under 2 years old. If you need to add a lap child after you have made a booking, you can reach reservations at 702-505-8888.

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Water for babies is allowed in reasonable quantities in carry-on bags. Remove this item from your carry-on bag to be screened separately from the rest of your belongings.

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