Flight Gimhae International Airport departs from Busan Gimhae International Airport at 14:00 and arrives at Taipei Taoyuan International Airport at 15:30.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 1071 Km. So the average speed is roughly 428 Km.
There is an 1 hour time difference between Busan and Taipei