Allegiant Air flying with babies

Are there any age restrictions regarding the acceptance of infants on Allegiant Air flights?

Infants younger than 15 days are not permitted to travel on Allegiant Air flights unless an attending physician approves such infants for air travel in writing.

When does Allegiant Air require the purchase of a ticket and reservation of a seat for my child?

Children younger than 2 years old are not required to have their own seat reserved and may travel on an adult’s lap, without a ticket purchase being necessary. Proof of age, such as a birth certificate, is required by Allegiant Air.

Children younger than 2 years also may travel in a child safety seat, in which case a ticket must be purchased if you want to be sure that the safety seat may be used during flight. Also, because one adult may travel with only one infant on lap, a second infant must occupy a separate seat, and a ticket must be purchased. Allegiant Air requires that children between 14 months and 2 years of age carry a certified copy of their birth certificate, with a raised seal, as proof of their age.

As required by the FAA, children 2 years of age and older must have their own separate seat reserved, and a ticket must be purchased for them.

Are there any discounts offered for infants or children traveling on Allegiant Air flights?

Children younger than 2 years not occupying a seat will be carried without charge when accompanied by a fare-paying passenger 15 years of age or older. Infants younger than 2 years old traveling on a confirmed reservation and all children 2 years of age or older will be charged the applicable fare.

Lap Infant

Allegiant Air allows infants between 15 days and 2 years old to travel on the lap of an accompanying adult at least 15 years of age. There is no charge for an infant not occupying a seat. You may travel with only one infant on your lap. When traveling with two babies, a ticket must be purchased for the second infant.

When you are traveling with an infant, one stroller and one infant safety seat are exempt from baggage fees, including the gate-checked bag fee. You may check one or both of these items at the ticket counter. You may use a stroller or a car seat to carry your baby through the airport, and once arrived at the boarding gate you may gate check the item. A diaper bag brought on board will not count toward your carry-on allowance.

If there are unoccupied seats available on the flight, the car seat may be used during the flight if it is federally-approved. Allegiant Air cannot guarantee that an unoccupied seat will be available for any child traveling without charge and a confirmed reservation. If unoccupied seats are not available, safety seats for infants without a confirmed reservation may have to be transported as checked baggage.

Infants with Confirmed Reservations

If you want to be sure your baby will sit in his/her own car seat secured in a separate seat during the flight, you must purchase a ticket for your child at the applicable fare. You can reserve a seat for your infant online. Only federally-approved infant safety seats may be used onboard, such as convertible-type car seats designed for forward or backward installation in a forward-facing aircraft seat, bearing the labels:

  • “This child restraint device conforms to all applicable federal motor vehicle safety standards.” – any child restraint device manufactured between 1/1/1961 and 2/25/1985.
  • “This child restraint device conforms to all applicable federal motor vehicle safety standards” and “This restraint is certified for use in motor vehicles and aircraft.” – any child restraint device manufactured since 2/26/1985.

According to federal regulations, the use of child booster seats and harness-type or vest-type restraint devices, except for the AmSafe Aviation CARES, is prohibited. At this time, the AmSafe Aviation CARES, appropriate for children who weigh between 22 and 44 lbs, is the only harness-type restraint system approved by the FAA. The AmSafe Aviation CARES must have a label indicating “FAA Approved in Accordance with 14CFR 21.305(d), Approved for Aircraft Use Only.”

In addition to the approved car seat used on board, you may also bring a diaper bag and check one stroller when traveling with your child.


When you are traveling with children, you might want to ensure that your family is seated together. While every reasonable effort will be made to accommodate families, a child under age 14 will be seated next to at least one adult traveling on the same itinerary, but the availability of seats together for the entire family cannot be guaranteed. In this case, it is recommended that you reserve seats in advance. Seats can be reserved for a nominal fee when you make your reservation, or at any time up until you check in for your flight by logging into your MyAllegiant account. Exit row seating may not be available to families with children due to FAA safety regulations.

When you do not reserve seats in advance, at check-in, whether online or at the airport, you will be assigned seats from the remaining available seats on the plane. If you check in online, you can view your assigned seats and change them if you want through Manage My Travel and reserving different seats for your flight. You should verify your seat assignments before completing the check-in process because your seat assignments cannot be changed once you have printed/downloaded a boarding pass or checked in at the airport.

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