Please be aware that Shanghai has multiple airports and that these results are for all airports serving the city.
The best day to arrive at Shanghai is Thursday and it would be best to avoid Sunday, as prices are on average 55.62% higher than on Thursday. (Average prices, based on 943 datapoints.)
The cheapest airline flying to Shanghai is XiamenAir. They are 79% cheaper than Singapore Airlines. (Average prices, based on 256 datapoints.)
At Shanghai the most flights depart around 09:00. (Hourly flights, based on 1083 datapoints.)
From Shanghai it is on average the cheapest to fly to Seoul and to Beijing. (Average prices, based on 92 datapoints.)
From Shanghai most of the flights depart to Beijing, second best connected from Shanghai is Guangzhou. (Daily flights, based on 452 datapoints.)