The same flight schedule will be in force next winter, Zagreb Airport said on Wednesday.
Turkish Airlines introduced Zagreb-Istanbul flights in 1998 twice a week, with their number rising every season since.
The newest flights are a direct consequence of the good economic trends between Turkey and Croatia, Zagreb Airport CEO Miroslav Drljaca said, hopeful that the airport's turnover would continue to grow. He said Turkish Airlines considerably contributed to the growth.
Turkish Airlines director general for Croatia Alp Tekin said this company was the fastest growing European airline and that it was satisfied with the success and constant growth in flights in Croatia.
The airline also wants to continue to invest in more flights from Zagreb, contributing to the development of the local economy and rise in arrivals to Croatia.
Turkish Ambassador Burak Ozugergin said the visa requirements did not affect the connections between the two countries.
Turkish Airlines is the third European airline in passenger turnover, with a fleet of 220 planes flying to 233 cities, including 195 abroad.