Turkish Airlines has confirmed a deal to buy 95 planes from Boeing.
The airline revealed it would buy 20 planes in 2016, 20 in 2018, 15 in 2019, 30 in 2020 and ten in 2021 from the US aircraft maker.
It said the purchases were made to meet a need for narrow-body planes.
Some 70 of the orders were firm ones, and 25 were options.
The orders are for 20 of the B737-800 aircraft, 65 of the B737-8 MAX model and 10 of the B737-9 MAX plane.
Boeing said the list price value for the 70 firm orders was US$6.9bn.
Last month, Turkish Airlines said it would buy 117 narrow-body planes from Boeing’s European rival Airbus between 2015 and 2020.
Of these 82 are firm orders, and the carrier has options to buy a further 35 aircraft.
Turkish Airlines carried 39 million passengers in last year, with the figure expected to reach 46 million passengers by the end of this year and 90 million passengers by the end of 2020.
The carrier saw nearly US$8 billion in turnover in last year and it is aiming to reach US$18 billion by 2020.