Singapore Airlines has firmed up an order with Boeing for eight more B777-300ERs for use on medium and long-haul routes.

The order was announced in August when a letter of intent was inked, with a firm purchase agreement now in place, enabling deliveries of the aircraft to begin in the 2013/14 financial year.

The order is valued at USD2.4 billion at current list prices.

Powered by General Electric GE90 engines, the aircraft will be configured in a three-class layout and will join 19 B777-300ERs already in service.

“This order is part of our ongoing fleet expansion and modernisation programme, which enables us to offer our latest cabin products to our customers,” said Singapore Airlines chief executive Goh Choon Phong.

“The additional B777-300ERs will also help us further strengthen the Singapore Airlines network, providing our customers even more travel options.”

Singapore Airlines’ fleet currently comprises 105 widebody aircraft from Airbus and Boeing, with another 68 aircraft on firm purchase or lease orders with the two manufacturers.