Please be aware that Shanghai has multiple airports and that these results are only for Pudong International airport.
The best day to arrive at Shanghai is Tuesday and it would be best to avoid Sunday, as prices are on average 36.12% higher than on Tuesday. (Average prices, based on 756 datapoints.)
The cheapest airline flying to Shanghai is Yangtze River Express. They are 57% cheaper than Korean Air. (Average prices, based on 452 datapoints.)
At Shanghai the most flights depart around 13:00. (Hourly flights, based on 907 datapoints.)
From Shanghai it is on average the cheapest to fly to Guangzhou and to Seoul. (Average prices, based on 213 datapoints.)
From Shanghai most of the flights depart to Guangzhou, second best connected from Shanghai is Beijing. (Daily flights, based on 276 datapoints.)