Frontier unaccompanied minors extra fee

In order to insure your child is given the best possible service while traveling alone, Frontier requires strict adherence to the eligibility and reservation rules stated below.
Eligibility Requirements
Frontier Airlines designates children from ages 5 - 14 as unaccompanied minors when traveling without a parent, guardian, or companion of at least 15 years of age.
Children under five years of age are not accepted unless accompanied by an adult on any Frontier flight.
Unaccompanied minors may travel on connecting flights, except when the connecting flight is the last flight of the day.
Unaccompanied minors are not accepted on flights to/from San Jose, Costa Rica.
Children ages 15 - 17 are defined as adults and may travel without restriction at the option of the parent or guardian. Use the "Adult" option on the booking page for children ages 15 - 17 who do NOT require an escort.
Children ages 15 - 17 traveling alone will need to present one of the following: A photo ID issued by a government authority, or be accompanied by an adult with photo ID issued by a government authority.
Children ages 15 - 17 may also receive the benefits of an unaccompanied minor if the parent or guardian requests special supervision. The rules listed above for unaccompanied minors need to be followed. When making online reservations for children ages 15 - 17, use the "Child" option on the booking page. The service fee listed below will apply.

extra fee
Children traveling as unaccompanied minors pay a full adult fare.
An additional service charge of $50 per flight, applies to cover the extra handling required when an unaccompanied child travels. The charge applies for each separate flight. So a connecting flight would be $100 one way. This charge is NOT reflected in the online fare quoted. The service charge is collected at the first point of airport check-in
Example of Service Charge Calculation: A 10 year-old unaccompanied minor is traveling from Los Angeles to Denver and return. The entire service charge amount of $100 should be paid at the Los Angeles ticket counter. However, if necessary, the one-way service charge of $50 can be collected at the Los Angeles ticket counter and the return service charge of $50 can be collected at the Denver ticket counter.

A 9 year-old unaccompanied minor is traveling from Detroit to Phoenix with a stop in Denver and return. The entire service charge amount of $200 should be paid at the Detroit ticket counter. However, if necessary, the one-way service charge of $100 can be collected at the Detroit ticket counter and the return service charge of $100 can be collected at the Phoenix ticket counter.

In Flight
Once boarding announcements are made, a Frontier representative will escort the child onboard the aircraft, assist them with any carry-on luggage, as well as introduce the crew to the child. During the flight, the child will receive complimentary DIRECTV®, as well as a personal escort from the aircraft to the designated pick-up party. Snacks may be provided to the unaccompanied child. Snacks may contain nuts, soy, wheat, dairy, or egg. Snack items are packaged in a facility that processes peanuts and other nuts.

Arriving Flight
Only the person listed on the unaccompanied minor's form as the designated recipient of the child may pick up the child. The individual picking up the child must go to the airport ticket counter and advise the agent they are meeting an unaccompanied minor. A pass will need to be obtained from the agent to get through airport security. The individual picking up the child may only then proceed to the gate. A government-issued photo ID will need to be shown to the Frontier representative before Frontier will release the child into the meeting party's custody.