Flight Changi Airport departs from Singapore Changi Airport at 02:35 and arrives at Delhi Indira Gandhi International Airport at 05:40.
The flighttime is about 5h 35m. The distance travelled ("as the bird flies"): 2903 Km. So the average speed is roughly 520 Km.
There is an 2.5 hour time difference between Singapore and Delhi
The best day to arrive at Singapore is Wednesday and it would be best to avoid Friday, as prices are on average 150.48% higher than on Wednesday. (Average prices, based on 305134 datapoints.)
We have a lot more statistics for flights SQ 402 and between Singapore and Delhi.