According to Flight radar24, which also monitors live flight paths, the airlines that most frequently flew over Donetsk in the last week were: Aeroflot (86 flights), Singapore Airlines (75), Ukraine International Airlines (62), Lufthansa (56), and Malaysia Airlines (48).
At the time of the MH17 crash on 17 July, a number of other flights were in the area.
Selected flights over eastern Ukraine on the afternoon of 17 July