Flight Changi Airport departs from Singapore Changi Airport at 07:40 and arrives at Medan Kualanamu International Airport at 07:55.
The flighttime is about 1h 15m. The distance travelled ("as the bird flies"): 571 Km. So the average speed is roughly 457 Km.
There is an 1 hour time difference between Singapore and Medan
The best day to arrive at Singapore is Wednesday and it would be best to avoid Saturday, as prices are on average 17.09% higher than on Wednesday. (Average prices, based on 2539919 datapoints.)
We have a lot more statistics for flights GA 234 and between Singapore and Medan.