Istanbul-based budget carrier Pegasus Airlines' chairman Ali Sabanci said the airline had completed a large aircraft order agreement, according to a report in the Turkish daily Dunva.
The report said the new plane orders would be announced before year-end.
It said that the order would be much larger than a previous order of 40 planes and will be delivered over 10 years.
Pegasus flies to 57 destinations worldwide, having recently added a second destination in Georgia, the seaside resort of Batumi, and this month Lviv, the third destination in Ukraine.
