Korean Air has expanded its order for Boeing narrowbody aircraft, adding two additional 737-900ERs to its order book.
Valued at $171.6 million, the aircraft will join two 737-900ERs already delivered to the carrier.
Boeing delivered Korean's first 737-900ER outfitted with the new Sky Interior in June.
With this new order, the carrier now has ordered a total of four 737-900ERs. The airline currently operates two 159-seat 737-900ERs, 15 737-800s and 16 737-900s, according to Flightglobal's ACAS database. Boeing declined to say when the aircraft would be delivered to the carrier.
Korean recently firmed up an order for up to 30 Bombardier CSeries CS300 aircraft, 10 firm orders, 10 options and purchase rights for a further 10 aircraft.