Air flights - Part 2

My daughter booked a flight to Newcastle on Tyne at about the same time we booked our two flights to Alicante, and I noted the cost of flying from Exeter to Newcastle is about the same as Exeter to Alicante. I conclude that it doesn't matter how far you fly, the cost is for getting through the airport departure lounge and onto the plane. I hope there's no shops in the departure lounge!