Malaysia Airlines re-routed a Kuala Lumpur-to-London flight over Syrian airspace on Sunday after its usual route over Ukraine was closed, flight tracking data showed on Monday.

Flightradar24 posted a flight map on its Twitter account on Monday showing the change in the flight's route.

The new flight path for Malaysia Airlines MH4, which was re-routed from Ukraine. Credit:From flightradar24.com

Flight tracking data showed this flight had previously crossed over eastern Ukraine.

After Malaysia Airlines' Flight MH17 was shot down last Thursday by a ground-to-air missile in eastern Ukraine, airlines began to avoid the airspace below which the Ukrainian military has been fighting with Russian-backed rebels.