DD1 (9) is hoping to fly out to Spain a week earlier than us for summer vacation at Mums in Spain. We are hoping to send her with a 17yo who will act as au-pair for the summer for both DDs. DD1 is a very confident flier and has done the route many times with me so we are not concerned as they will be met at the other end.
Does anyone know if I will have to provide a letter giving permission for her to fly with 17yo?