Flight Chhatrapati Shivaji International Airport departs from Mumbai Chhatrapati Shivaji International Airport at 11:45 and arrives at Singapore Changi Airport at 19:50.
The flighttime is about 5h 35m. The distance travelled ("as the bird flies"): 3418 Km. So the average speed is roughly 612 Km.
There is an 2.5 hour time difference between Mumbai and Singapore
The best day to arrive at Mumbai is Wednesday and it would be best to avoid Monday, as prices are on average 369.6% higher than on Wednesday. (Average prices, based on 25247 datapoints.)
We have a lot more statistics for flights SQ 421 and between Mumbai and Singapore.