Who?
Oh the airline which sells some seats for a bargain and the rest at an over-inflated price to the rich who need to travel at short notice, covering the discount and bringing in the profit. The same model all airlines, except Ryanair, use.
You can fly to New York and back now for £300, I double fucking dare you to guess how much those in business and first class care paying.
They subsidise the discounted economy seats.
In fact I dare you to guess how much a businessman has to pay to travel to New York on BA out on Monday, back the following day, he has a meeting, but has to travel economy. He's sat next to you in your £300 seat, guess how much he pays. Or look it up at ba.com, either way you'll shit bricks.