Please be aware that Shanghai has multiple airports and that these results are only for Hongqiao International airport.
The best month to arrive at Shanghai is September and the most expensive month to fly is July. (Average prices, based on 339 datapoints.)
The best day to arrive at Shanghai is Thursday and it would be best to avoid Sunday, as prices are on average 140.39% higher than on Thursday. (Average prices, based on 329 datapoints.)
The cheapest airline flying to Shanghai is Hainan Airlines. They are 50% cheaper than Shanghai Airlines. (Average prices, based on 412 datapoints.)