A long time ago I worked for a European airline that thought it would be a good idea to wade into the rapidly expanding night charter market flying football hooligans to Majorca and other unsuspecting Mediterranean holiday spots. We actually flew some of those flights for 50p profit per seat.
Then someone hit a bird, and suddenly we had to fill 1.1 million seats to pay for the damage.
You need to charge a ****load for seats, because the costs are anywhere from 96% to 105% of a ****load.