Boeing and Korean Air have finalised an order for two 777-300ERs (Extended Range) airplanes.

The order is valued at $596 million at Boeing list prices.

“Korean Air has been a valued Boeing customer for over five decades and we are honored the airline has again chosen the 777-300ER to expand its long-haul fleet,” said Ihssane Mounir, vice president of sales and marketing for Greater China and Korea, Boeing Commercial Airplanes.

“The 777-300ERs advanced technology and innovative features will continue to provide the airline with tremendous economics and reliability.

“Korean Air’s growing fleet of Boeing twin-aisle airplanes validates its commitment to excellence in flight.”

Korea’s flag carrier is in the midst of expanding its wide-body fleet to meet growing passenger traffic in Asia.

The new airplanes will help Korean Air continue to position itself as a premium global airline.

The Boeing 777 is the world’s most successful twin-engine, long-haul airplane.

It is 19 percent lighter than its closest competitor, produces 22 per cent less carbon dioxide per seat and costs 20 per cent less to operate per seat.

The 777-300ER seats up to 365 passengers in a three-class configuration and has a maximum range of 7,930 nautical miles (14,685 km).

Korean Air currently operates 34 777 airplanes that include ten 777-300ERs.

With this order, the airline has six more 777-300ERs on order with Boeing.

The airline became the first airline in the world to operate both the 747-8 and 777 Freighters when they were added to its fleet after a historic double airplane delivery in February of this year.

Korean Air is considered the World’s Most Innovative Airline by the World Travel Awards.