Flight Changi Airport departs from Singapore Changi Airport at 16:50 and arrives at Delhi Indira Gandhi International Airport at 20:10.
The flighttime is about 5h 50m. The distance travelled ("as the bird flies"): 2903 Km. So the average speed is roughly 498 Km.
There is an 2.5 hour time difference between Singapore and Delhi
The best day to arrive at Singapore is Monday and it would be best to avoid Saturday, as prices are on average 329.81% higher than on Monday. (Average prices, based on 305742 datapoints.)
We have a lot more statistics for flights SQ 406 and between Singapore and Delhi.