The best month to fly between Hong Kong and Shanghai is September and the most expensive month to fly is July. (Average prices, based on 782 datapoints.)
The best day to arrive at Hong Kong is Sunday and it would be best to avoid Saturday, as prices are on average 89.35% higher than on Sunday. (Average prices, based on 1595 datapoints.)
The cheapest airline flying from Hong Kong to Shanghai is Spring Airlines. They are 65% cheaper than Cathay Pacific. (Average prices, based on 793 datapoints.)
The best time to fly is at around 21. (Average prices, based on 1544 datapoints.)