Qatar Airways has ordered four Boeing 777 freighters on the opening day of Paris Air Show.

The freighter order was part of a $4.8bn list price deal that includes ten passenger B777-8Xs announced by the Middle East carrier.

'The order for four 777 Freighters underpins the value that this airplane has also brought to our rapidly growing cargo operations,' said Akbar Al Baker, chief executive of Qatar Airways.

'Qatar Airways Cargo is an integral part of the Qatar Airways Group and we look forward to enhancing the existing fleet with next-generation aircraft.'

Al Baker added: 'Acquiring technologically-advanced airplanes such as the 777X is integral to our expansion strategy,' said, adding: 'With the addition of these 777-8X to the 50 777-9X already on order, we are confident of continuing the tremendous legacy of the 777.'

The 777-9X will be 12% more fuel efficient than the competition, which is necessary in today's competitive environment. The 777-8X is five percent more efficient than its competitor at all ranges while providing for new network opportunities.

The 777 freighter is capable of flying 4,900 nautical miles (9,070 km) with a full payload and general cargo market densities, making it the world's longest-range twin-engine freighter.

Said Boeing: 'The airplane's range capability translates into significant savings for cargo operators: fewer stops and associated landing fees, less congestion at transfer.'