Kuwait Airways has agreed to buy 10 widebody 777-300ER passenger aircraft from manufacturer Boeing to upgrade its fleet, the airline's chairwoman said on Thursday.

The deal has a value of $3.3 billion at list price, although airlines rarely pay the catalogue price.

The 777-300ER is an "Extended Range" version of the 777 with seating for up to 386 passengers and a range of 7,825 nautical miles.

The carrier will begin taking delivery of these aircraft from November 2016 and they will also help Kuwait Airways launch new routes, Rasha Al-Roumi, chairwoman and managing director of Kuwait Airways said in a statement by Kuwait News Agency (Kuna).

Kuwait Airways last February agreed to purchase 25 new aircraft including Airbus A320-neos and A350s. - Reuters