Flight Taoyuan International Airport departs from Taipei Taoyuan International Airport at 18:55 and arrives at Seoul Incheon International Airport at 22:35.
The flighttime is about 2h 40m. The distance travelled ("as the bird flies"): 958 Km. So the average speed is roughly 359 Km.
There is an 1 hour time difference between Taipei and Seoul
The best day to arrive at Taipei is Saturday and it would be best to avoid Friday, as prices are on average 283.81% higher than on Saturday. (Average prices, based on 1858616 datapoints.)
We have a lot more statistics for flights KE 188 and between Taipei and Seoul.