score:10
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.
Upvote:3
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.