What seat on a regularly scheduled flight is the most expensive? I'm assuming it will be some first (or higher) class seat on a long-haul premium airline, but I'm not sure which trip can lay claim to being the most lucrative.
Arguably the flight from New York City and Mumbai on Etihad is the most expensive flight in the world.
A round-trip ticket would cost a staggering $76,000 (£52,000) at single or double occupancy.
This is because the ticket is for "The Residence", which is an actual three-room suite on the plane. A slew of various services and amenities come with the ticket.
The direct flight from JFK to London City is no slouch either. The spiritual successor of the Concorde, with flights numbers BA 1 and BA 2, it saves time by dropping you in London proper instead of out at Heathrow. Cost is $5000-$10,000, and the entire airplane is first class. (Other flights which involve stops and plane changes are in the $700 range.)
Equipmentwise, it has been downgraded from the incomparable Concorde to the ignominious Airbus 318 (the mini-mini-A320) - and being all-first-class means capacity is considerably less than the 100-seat Concorde. However this allows it to grease into the tiny runway at LCY. It cannot take off with full fuel, so westbound, it stops briefly at Shannon for fuel.