Flight Houari Boumediene Airport departs from Algiers Houari Boumediene Airport at 10:30 and arrives at Rome Leonardo da Vinci–Fiumicino Airport at 13:30.
The flighttime is about 2h 00m. The distance travelled ("as the bird flies"): 1152 Km. So the average speed is roughly 576 Km.
There is an 1 hour time difference between Algiers and Rome
