Boeing sees huge demand for wide-body aircraft

US aircraft maker Boeing Co said that by 2020, it will deliver its first B777X aircraft, the latest addition to its family of twin-aisle airplanes, and a more fuel-efficient and powerful version of the current B777-300ER. The company said it is bullish on China's demand for wide-body planes, fueled by China' growing international flights market.

Currently, the B777X has 340 orders and commitment orders from eight global customers, but Chinese airlines haven't ordered any yet.

"Air China, China Eastern Airlines and China Southern Airlines still have a large number of B777-300ER aircraft orders not delivered yet. They are expected to start ordering B777X in the next five years," said Darren Hulst, managing director of marketing at Boeing Commercial Airplanes Northeast Asia.