Emirates Airline has placed the single largest aircraft order in dollar value in the history of Boeing with a deal for an additional 50 777-300 ER aircraft.

Worth approximately US$18 billion in list prices, Emirates placed the order at the Dubai Air Show.

The deal will also included 20 777-300 ER options valued at US$8 billion, for a total of 70 aircraft valued at US$ 26 billion.

This record breaking long-range aircraft order adds to Emirates existing world’s largest fleet of 95 777s in service, including nine 200 ERs, ten 200 LRs, 12 300s, 61-300 ERs and three freighters.

Emirates already had 40 777-300 ERs on the order books, so, with the new order, the figure now stands at a firm order of 90 777-300 ERs.

The agreement was signed during a ceremony - pictured above - at the Dubai Air Show by His Highness Sheikh Ahmed Bin Saeed Al-Maktoum, chairman of Emirates Group, and Jim Albaugh, chief executive of Boeing Commercial Airplanes.

The signing was also witnessed by David Joyce, president of GE Aviation, whose GE 90-115B engine will power the 777-300 ER aircraft.

“With 61 777 300-ERs currently in service, this record breaking dollar value order is another milestone for Emirates and affirms our strategy to expand our long haul destinations and continue to excel as a world leading carrier, connecting the world to Dubai and beyond,” said Sheikh Al-Maktoum.

The 777-300ER will be operated in a three-class configuration with eight First Class suites, 42 Business Class seats and 310 Economy Class seats and offers an additional cargo payload of 20.1 tonnes.