Please be aware that Shanghai and Tokyo has multiple airports and that these results are for all airports serving the city.
The best month to fly between Shanghai and Tokyo is February and the most expensive month to fly is March. (Average prices, based on 262 datapoints.)
The best day to arrive at Shanghai is Friday and it would be best to avoid Monday, as prices are on average 156.37% higher than on Friday. (Average prices, based on 262 datapoints.)
The cheapest airline flying from Shanghai to Tokyo is Spring Airlines. They are 64% cheaper than Japan Airlines. (Average prices, based on 285 datapoints.)
The best time to fly is at around 19. (Average prices, based on 403 datapoints.)