In reply to GrahamD:
Airlines make half of naff all on the price of the flight itself - I think I saw easyJet quoted as saying on average they make about £5 per passenger per single journey, which means many lower fares are going to be significant loss leaders. Where profit is made is the extra services and the food on board. It's a bit like petrol stations - they make next to no profit on the actual fuel, it's mostly made on the stuff in the shop - that's why you don't see pay at the pump at the vast majority of forecourts, and where you do it's ones with small shops and no coffee etc.
OK, we've passed the time of the 1p flight to a more sensible one, in a way, but I agree - flying is not expensive for what it is. It's extraordinarily cheap, in fact. Often cheaper, at least for 2 people, than it would be to drive (if you consider the full cost of using your car, not just the fuel), which when you consider all the things you're paying for is quite impressive, really.
Post edited at 11:51