Luftansa does a direct 10+ hour flight
A direct flight is a flight in which the traveler make no other stops. The plane leaves from its point of origin and arrives at the travelers destination making no other stops. A connecting flight...
9.25 Hours http://www.tourismvancouver.com/pdf/map_flying_times.pdf
I just dug online for 2 min and I got flight 0048 south African airways
5-6 hours