How do I book my lap baby on Southwest?

You can book your reservation with a Lap Child online for both domestic and international travel--as long as you are not purchasing your reservation with Rapid Rewards points. For redemption bookings or to add a Lap Child to an existing reservation, you may call us at 1-800-I-FLY-SWA.



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And then there's the age-old question: Should you board in the first wave with your baby and toddlers? Most gate agents give you the option of early boarding—and with a newborn or infant, that's the way to go so you can get settled with bags stowed and essentials out for takeoff.

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SouthWest: SouthWest includes diaper bags as part of your carry on allowance. As a carry on, it should be no larger than 24” (L) + 16” (W) + 10” (H). If you are using your diaper bag as a personal item, it should be able to fit under the seat, 16.25” (L) + 13.5” (W) + 8” (H).

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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.

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Diaper bags, soft-sided cooler bags with breast milk, child safety seats, strollers and medical or mobility devices don't count toward your personal item or carry-on.

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Who qualifies as a Lap Child? One child over 14 days and under two (2) years of age, not occupying a seat, may be carried as a Lap Child when traveling with an adult (12 years of age or older). Each adult may travel with one Lap Child.

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Early morning flights are usually less bumpy, which means more time letting your little one out of the car seat to explore the cabin (a must for new walkers). If that isn't possible, and you've got a by-the-clock napper, book a flight that coincides with nap time.

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The safest way for baby to fly: The AAP recommends that the safest way for your baby to fly is in a child safety restraint?an FAA-approved car seat or airplane harness device approved for your child's age and size installed with the airplane's seat belt. Booster seats cannot be used on airplanes.

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An infant is considered fit to fly if:
  • You can produce a passenger medical form, also known as a medical release for travel, signed by a physician stating that the baby is healthy enough to fly.
  • You have a copy of the baby's birth certificate as proof of age.


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An infant is considered fit to fly if: You can produce a passenger medical form, also known as a medical release for travel, signed by a physician stating that the baby is healthy enough to fly. You have a copy of the baby's birth certificate as proof of age.

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If you're traveling with a child of any age, you can bring the following on your flight for free in addition to your carry-on and personal items: Diaper bag. Breast pump, milk or formula. FAA-approved car seat.

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They also prefer the back row because it's close to the bathroom, which is perfect for emergency diaper changes. In the next shot of the rows of seats in front of them, they further explain that there's more privacy in the back, “so no judgy eyes watching you parent, and less pressure if your baby cries.”

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