The best month to fly between Singapore and Hong Kong is May and the most expensive month to fly is August. (Average prices, based on 668 datapoints.)
The best day to arrive at Singapore is Monday and it would be best to avoid Saturday, as prices are on average 165.62% higher than on Monday. (Average prices, based on 4189060 datapoints.)
The best time to fly is at around 8. (Average prices, based on 1472 datapoints.)