Hundreds of flights in and out of Turkey have been cancelled at Istanbul’s two airports after the city was blanketed by heavy snow, which also forced the closure of schools and brought chaos to the roads.

Turkish Airlines cancelled 265 flights in and out of the main Ataturk airport and 37 at Sabiha Gokcen, Istanbul’s second airport. Budget airline Pegasus said it had cancelled 34 flights arriving or departing from Sabiha Gokcen.