Flight Cancellations and Travel Restrictions
According to the Turkish Airlines site, here are flight undoings and travel limitations:
All flights are dropped until April 1, 2020:
China (Mainland)
Iran
Iraq
Italy
South Korea
Nakhchivan (the Autonomous Republic in Azerbaijan)
Saudi Arabia (Dammam and Riyadh)
Mongolia (March 11 - 28, 2020)
Israel (Tel Aviv has just 2 flights each day)
Europe (Germany, France, Spain, Norway, Denmark, Belgium, Sweden, Austria, and Holland suspended until April 17, 2020)
Kosovo (March 16-31, 2020)
Ukraine (March 17 - April 3, 2020)