Baku, April 2, AZERTAC Turkish Airlines has extended its suspension of all international flights to May 1 as part of measures to curb the spread of the novel coronavirus, the national flag carrier announced late Wednesday, according to Anadolu Agency.Domestic flights have been limited to 14 metropolitan cities while all other domestic flights have been halted, Chief Executive Officer Bilal Eksi said on Twitter.For domestic transportation, travel between cities is subject to local authorities' permission.The airlines had originally suspended all international flights except to Hong Kong, Moscow, Addis Ababa, New York and Washington until April 17.