Singapore Airlines has announced a commitment to purchase 20 Boeing 777-9s and 19 additional 787-10s. The order — which comes amidst a slowdown in sales of Boeing and Airbus widebody aircraft — is theoretically worth $13.8bn at list prices. There had been no 777X order announcements since June 2015.

The carrier also announced its recommitment for its previous order for 30 787-10s, for which the airline became the launch customer in 2013. First deliveries of the 787-10, which started final assembly in December, are scheduled for 2018.

Singapore Airlines currently operates a fleet of 85 777s but had yet to order the new 777X variant, which features a redesigned wing, new GE9X engines and a cabin inspired by the 787. The bulk of the 306 orders to date have come from the Gulf carriers, particularly Emirates, which has ordered 150.

The airline has also purchased 67 A350-900s, including an ultra-long range (ULR) version, which it will use to relaunch non-stop service to New York and Los Angeles. It has received 10 A350-900s to date.