Flight Changi Airport departs from Singapore Changi Airport at 08:40 and arrives at Osaka Kansai International Airport at 16:10.
The flighttime is about 6h 30m. The distance travelled ("as the bird flies"): 3803 Km. So the average speed is roughly 585 Km.
There is an 1 hour time difference between Singapore and Osaka
The best day to arrive at Singapore is Saturday and it would be best to avoid Sunday, as prices are on average 100.04% higher than on Saturday. (Average prices, based on 256617 datapoints.)
We have a lot more statistics for flights SQ 620 and between Singapore and Osaka.