How Much Is The Unaccompanied Minor Fee? Most Major Airlines Typically Charge An Unaccompanied Minor Fee. Frontier Unaccompanied Minor The Cost May Change Based On The Airline, The Airports Of Departure And Arrival, And The Length Of The Flight. The Premium, Which Is Paid In Addition To The Cost Of The Ticket, May Cover Extra Help Throughout The Flight As Well As Services Like Surveillance At The Airports Of Departure And Arrival. On A Few Flights, Frontier Airlines Provides An Unaccompanied Minor Service For Boys Aged 5 To 14. An Unaccompanied Minor Form And A Passport Or Other Form Of Identification For The Minor Are Requested Form Parents/Guardians In Order To Use This Service. Whilst Also Travelling With Frontier, Parents Or Guardians Must Accompany Their Children To The Airport. Throughout The Flight, The Flight Attendant Will Be In Charge Of Keeping An Eye On The Child, And The Parent Or Guardian Is Expected. #frontierunaccompaniedminor #unaccompaniedminorsfrontier #frontierunaccompaniedminorfee #doesfrontierallowunaccompaniedminors