All Nippon Airways (ANA)  announced it will place firm orders for 70 new Airbus and Boeing aircraft worth $16.4 billion at current list prices.

ANA said the Airbus order is for 30 aircraft, comprising seven A320neos and 23 A321neos, which will replace ANA’s existing Boeing 737-500 and A320ceo aircraft.

The carrier will also purchase 40 Boeing aircraft—comprising 20 GE9X-powered 777-9Xs to replace its existing fleet of 777-300ERs, a further six GE90-115B-powered 777-300ERs to support the expansion of its international services until delivery of Boeing 777-9X, and 14 787-9s. According to ANA, this will take its total fleet of Dreamliners to 80.

The aircraft are scheduled for delivery in FY2016-2027 and will increase the size of the ANA fleet to 250 aircraft.

The new Boeing aircraft will be used predominantly on international routes while the new

Airbus aircraft will be introduced both on domestic routes and international routes.

ANA said the order is the “biggest in the airline’s history” and will “support ANA’s drive to become one of the world’s leading airline groups.” The new aircraft will also “help to respond to the needs of the increasing number of passengers expected to arrive in Japan in the run-up to the 2020 Tokyo Olympics and will support the Japanese government’s plans to boost the annual total of foreign visitors to Japan to 20 million,” ANA said in a statement.