EgyptAir decided Wednesday operating three additional flights between Cairo and Istanbul during the winter season , from January to March 2013, EgyptAir Chairman Roshdi Zakaria said. The three additional flights ,to be on Sundays, Tuesdays and Thursdays ,will bring the total number of Egypt-Turkey flights to 17 per week, Zakaria said. EgyptAir already has two daily flights between Cairo and Istanbul. The measure comes within the framework of reinforcing the company\'s lines in eastern Europe.