Flight Changi Airport departs from Singapore Changi Airport at 23:45 and arrives at London Heathrow Airport at 05:55.
The flighttime is about 14h 10m. The distance travelled ("as the bird flies"): 11049 Km. So the average speed is roughly 780 Km.
There is an 8 hour time difference between Singapore and London
The best day to arrive at Singapore is Tuesday and it would be best to avoid Friday, as prices are on average 110.27% higher than on Tuesday. (Average prices, based on 246155 datapoints.)
We have a lot more statistics for flights SQ 322 and between Singapore and London.
