Flight Gimhae International Airport departs from Busan Gimhae International Airport at 11:05 and arrives at Taipei Taoyuan International Airport at 12:50.
The flighttime is about 2h 45m. The distance travelled ("as the bird flies"): 1071 Km. So the average speed is roughly 389 Km.
There is an 1 hour time difference between Busan and Taipei