This city is far away from Prague, almost 4 hours with car, if you have not traffic jam. So if you need go to Ostrava to business meeting like me, the best way is to catch train “Pendolino” which is going to Ostrava in three hours. The first one is starting from Prague in 5:23 and you sould catch first metro (it start in 4:45). Then you will be in Ostrava in cca 8:30. It is rally good that the train stops just in few train station (Prague m.s. – Pardubice – Olomouc – Ostrava–Svinov – Ostrava m.s.).