The best month to fly between Singapore and Hong Kong is October and the most expensive month to fly is December. (Average prices, based on 312 datapoints.)
The best day to arrive at Singapore is Thursday and it would be best to avoid Wednesday, as prices are on average 407.15% higher than on Thursday. (Average prices, based on 2277638 datapoints.)
The best time to fly is at around 6. (Average prices, based on 3824 datapoints.)