Flight Kansai International Airport departs from Osaka Kansai International Airport at 10:55 and arrives at Singapore Changi Airport at 16:40.
The flighttime is about 6h 45m. The distance travelled ("as the bird flies"): 3803 Km. So the average speed is roughly 563 Km.
There is an 1 hour time difference between Osaka and Singapore
The best day to arrive at Osaka is Saturday and it would be best to avoid Wednesday, as prices are on average 763.39% higher than on Saturday. (Average prices, based on 142688 datapoints.)
We have a lot more statistics for flights SQ 619 and between Osaka and Singapore.