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 1569 datapoints.)
The best day to arrive at Hong Kong is Wednesday and it would be best to avoid Thursday, as prices are on average 94.03% higher than on Wednesday. (Average prices, based on 234 datapoints.)
The cheapest airline flying from Hong Kong to Shanghai is Spring Airlines. They are 65% cheaper than Cathay Pacific. (Average prices, based on 1580 datapoints.)
The best time to fly is at around 8. (Average prices, based on 1790 datapoints.)