Please be aware that Shanghai has multiple airports and that these results are only for Hongqiao International airport.
The best day to arrive at Shanghai is Sunday and it would be best to avoid Friday, as prices are on average 43.63% higher than on Sunday. (Average prices, based on 404 datapoints.)
The cheapest airline flying to Shanghai is Hainan Airlines. They are 51% cheaper than Asiana Airlines. (Average prices, based on 225 datapoints.)
At Shanghai the most flights depart around 09:00. (Hourly flights, based on 335 datapoints.)
From Shanghai it is on average the cheapest to fly to Xiamen and to Guangzhou. (Average prices, based on 129 datapoints.)
From Shanghai most of the flights depart to Guangzhou, second best connected from Shanghai is Kuala Lumpur. (Daily flights, based on 68 datapoints.)