Flight Indira Gandhi International Airport departs from Delhi Indira Gandhi International Airport at 09:05 and arrives at Singapore Changi Airport at 17:45.
The flighttime is about 6h 10m. The distance travelled ("as the bird flies"): 2903 Km. So the average speed is roughly 471 Km.
There is an 2.5 hour time difference between Delhi and Singapore
The best day to arrive at Delhi is Saturday and it would be best to avoid Sunday, as prices are on average 118.12% higher than on Saturday. (Average prices, based on 120311 datapoints.)
We have a lot more statistics for flights 6E 1013 and between Delhi and Singapore.