Shuttle from HIFS to Airport?

[MomTo2Princess]

Does anyone know if one exists? We can give my little sister a ride from the airport to the hotel on Saturday, but she's leaving three days earlier than us. Just trying to get her to the airport without us lazy heads having to get up early and taking her ourselves

Or, do you know how long it takes for a cab to arrive once we call? Is there one that you would chose over another? And, how much is the approximate cost?

Thanks!