Frontier Airlines infant and child policy: lap infants, strollers and kids flying alone
Guide to Frontier Airlines infant and child policies. Learn about lap infant rules, free checked strollers and car seats, and guaranteed family seating for kids under 13.
Frontier Airlines makes family travel more straightforward with a few key policies. Children from seven days old up to their second birthday can fly free as lap infants on domestic trips, and the airline checks strollers and car seats at no charge. Frontier also guarantees that a child 13 or younger can sit next to an accompanying adult (over 13) for free, if adjacent seats are available when you book.
| Topic | What Frontier Airlines says |
|---|---|
| Who counts as a lap infant | Infants from seven days old until their second birthday can travel for free on an adult's lap.Source |
| Lap infant, domestic flights | Infants under 2 years old can fly for free on an adult's lap.Source |
| Lap infant, international flights | Lap children under age 2 on international flights are subject to international taxes, which must be paid before the first flight departs.Source |
| Baby in its own seat | You can buy a separate seat for your infant and use an approved car seat. Frontier encourages this as the safest option.Source |
| Lap infant limits | Only one lap infant is permitted per adult. If a single adult is traveling with two infants, a separate ticket must be purchased for the second infant, who must travel in an approved car seat.Source |
| Youngest age to fly | The minimum age for an infant to fly is 7 days old.Source |
| Stroller | Strollers can be checked for free and do not count toward baggage allowances. You can use your stroller in the airport and gate-check it for collection at your destination.Source |
| Checking a car seat | Car seats can be checked free of charge.Source |
| Car seat on board | Car seats are not allowed in emergency exit rows, the rows immediately in front of or behind them, or the first row. It is suggested to place them in window seats to avoid blocking aisle access.Source |
| Family seating | Frontier guarantees that a child aged 13 or younger will be seated next to an accompanying adult (over 13) at no extra cost, provided they are on the same reservation and adjacent seats are available when booking.Source |
| Youngest age to fly alone | Children under 15 years old are not permitted to travel alone and must be on the same reservation as an accompanying adult. The minimum age to travel alone is 15.Source |
Lap infants and infant fares
On Frontier Airlines, a child from seven days old until their second birthday can travel as a lap infant. For domestic flights, there is no charge for a lap infant who is at least seven days old. If you are traveling internationally, you will have to pay applicable international taxes for the infant before your first flight departs.
Each adult can only hold one lap infant. If one adult is flying with two infants, a seat must be purchased for the second infant, who will need to be in an approved car seat. Frontier encourages purchasing a separate seat for an infant as the safest option.
“Infants can travel for free, sitting on your lap from seven days old up to his/her second birthday.”
Official wording, flyfrontier.com, checked Oct 21, 2026
“Infants under 2 can fly free on an adult’s lap (must be at least 7 days old)”
Official wording, faq.flyfrontier.com, checked Oct 21, 2026
“Passengers under age 2 traveling internationally as lap children (not purchasing a seat) are subject to international taxes. These taxes must be paid prior to boarding the originating departure flight.”
Official wording, flyfrontier.com, checked Oct 21, 2026
“You may choose to purchase your little one his/her own seat and use an approved car seat on the plane, this is the safest way, if you can, we encourage you to do so.”
Official wording, flyfrontier.com, checked Oct 21, 2026
“Only one child is allowed per adult lap. If you are traveling with two infants and you are the only adult in your party, you will need to purchase a ticket for them and have an approved car seat for the second child.”
Official wording, flyfrontier.com, checked Oct 21, 2026
Newborns and proof of age
Frontier Airlines requires infants to be at least seven days old to fly. While you may not be asked for it automatically, the airline notes that a birth certificate may be requested to verify your baby’s age. This could happen if the infant’s age appears questionable to airline staff.
It is a good idea to have a copy of your child’s birth certificate with you, just in case you are asked to show proof of age for an infant traveling on your lap.
“Infants must be at least 7 days old and under 2 years”
Official wording, faq.flyfrontier.com, checked Oct 21, 2026
“Please Note: A birth certificate may be requested for age verification purposes if the infants' age appears questionable.”
Official wording, flyfrontier.com, checked Oct 21, 2026
Strollers and car seats
You can check a stroller and a car seat for free with Frontier Airlines, and they do not count toward your carry-on or personal item allowances. You can use your stroller all the way to the gate and pick it up at your destination.
If you bring a car seat on board for a child with a purchased seat, it cannot be placed in emergency exit rows, the rows directly in front of or behind them, or the very first row. Frontier suggests placing car seats in window seats. The airline also permits the use of an FAA-approved AMSafe Aviation C.A.R.E.S. harness.
Full details, with the airline’s own wording: Frontier Airlines car seat and stroller policy.
“Nope, strollers and car seats can be checked for free. •You can use your stroller through the airport •It can be gate-checked and returned to you at your destination •These items don’t count toward your carry-on or personal item allowances”
Official wording, faq.flyfrontier.com, checked Oct 21, 2026
Sitting together
Frontier Airlines has a policy to help families sit together. The airline guarantees that a child aged 13 or younger will be seated next to an accompanying adult who is over 13 at no extra cost.
This guarantee applies under two conditions: everyone must be on the same reservation, and adjacent seats must be available at the time you book your flights. To ensure your family is seated together, it is best to arrange seating when you first make your booking.
“Yes, if your reservation includes a child 13 or younger, we’ll guarantee they sit next to an accompanying adult (over 13) at no extra cost, as long as: You’re all on the same reservation Adjacent seats are available at booking”
Official wording, faq.flyfrontier.com, checked Oct 21, 2026
Kids flying alone
Frontier Airlines does not permit children under the age of 15 to travel alone. The minimum age for a passenger to fly by themselves on Frontier is 15 years old. Any child younger than 15 must be on the same reservation as an accompanying adult.
“Effective November 1, 2018, Frontier Airlines will no longer accept children traveling alone under the age of 15 yrs of age. Any child under the age of 15 must be in the same reservation as an accompanying adult.”
Official wording, flyfrontier.com, checked Oct 21, 2026
Related pages
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