Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 12:25 and arrives at Seoul Incheon International Airport at 15:50.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 958 Km. So the average speed is roughly 396 Km.
There is an 1 hour time difference between Taipei and Seoul
The best day to arrive at Taipei is Thursday and it would be best to avoid Tuesday, as prices are on average 281.32% higher than on Thursday. (Average prices, based on 1907115 datapoints.)
We have a lot more statistics for flights KE 186 and between Taipei and Seoul.