International Airlines Group has placed an order for up to 42 B777-9 aircraft for its British Airways member carrier.
The transaction includes 18 firm orders, plus options on another 24 aircraft.
The AGI indicates that the B777-9 will be configured into four classes, with a total of 325 seats, and will be used to replace 14 B747-400s and four B777-200s between 2022 and 2025.
The B777-9 list price is close to US $ 442.2 million, although IAG said it has negotiated "a substantial rebate from the list price". The new aircraft will be powered by General Electric GE9X engines.
Willie Walsh, Director General of IAG, said the following:
"The new B777-9 is the world's most fuel-efficient long-haul aircraft and will bring many benefits to the British Airways fleet. This is the ideal replacement for the Boeing 747 and its size and range will fit the airline's existing network well.
"This aircraft will provide additional savings and environmental benefits with 30 percent more fuel costs per seat than the Boeing 747. It will also provide an enhanced passenger experience."
The announcement comes as BA prepares to host the first Airbus A350 aircraft in the fleet this year, which will include the carrier's new headquarters, Club World.
The airline currently has a total of 135 large aircraft in its fleet (12 A380s, 30 B787s, 12 B777-300ERs, 46 B777-200s and 35 B747s), as well as 12 other B787s, 4 B777-300ERs and 18 A350s also order.
Lufthansa is the launch customer of the B777-9. and is about to launch a new business class seat in the plane when it will debut next year..