The biggest advantage of taking the high-speed Railjet trains from Vienna to Prague is the short duration of the train ride. It takes almost twice as many hours on the regular overnight train if you compare it to the time on the road of the high-speed one. The latest daily departure of the bullet train is around 8 p.m. and it arrives at about 12 a.m., whereas the overnight train leaves at around midnight and arrives only at about 7 in the morning. Moreover, the fast day trains are more modern, better-equipped and comfortable to travel in than the overnight trains.