TOKYO (AFP) - Japan's two biggest airlines on Friday projected smooth full-year earnings, with All Nippon Airways (ANA) placing a US$2.2 billion (S$2.75 billion) order for Boeing and Airbus planes, while rival Japan Airlines (JAL) raised its full-year profit forecast.

ANA said its April-December net profit soared 57.2 per cent to 52.36 billion yen (S$553 million) from a year ago, as an expansion at Tokyo's downtown Haneda airport increased landing slots for international flights.

Sales in the latest period rose 9.1 per cent to 1.3 trillion yen, while ANA left unchanged its annual net profit forecast of 35 billion yen for the fiscal year to March.

The company "moved to strengthen its overseas networks by taking advantage of the increase in takeoff and landing slots for international routes at Haneda Airport", it said in a statement.

Revenue from international passenger flights jumped 19.1 percent on-year, while revenue in its domestic passenger flight business inched up 1.0 percent.

ANA added seven new routes at the airport with flights bound for London, Paris, Munich, Hanoi, Jakarta, Manila and Vancouver.

Also Friday, the carrier said it has placed a US$2.2 billion order for a total of 15 planes from Boeing and Airbus.

The deal would see it acquire eight planes from US-based Boeing and seven from European planemaker Airbus, with delivery from later this year until 2022.

The deal's size is based on list prices, but manufacturers usually give airlines a discount from that rate.

Despite a fall in nine-month profit, JAL raised its full-year earnings forecast owing to falling fuel costs and stronger revenue in its cargo business.