Please be aware that Tokyo and Shanghai has multiple airports and that these results are for all airports serving the city.
The best month to fly between Tokyo and Shanghai is August and the most expensive month to fly is January. (Average prices, based on 326 datapoints.)
The best day to arrive at Tokyo is Tuesday and it would be best to avoid Sunday, as prices are on average 170.37% higher than on Tuesday. (Average prices, based on 358 datapoints.)
The cheapest airline flying from Tokyo to Shanghai is Spring Airlines. They are 78% cheaper than All Nippon Airways. (Average prices, based on 339 datapoints.)
The best time to fly is at around 19. (Average prices, based on 453 datapoints.)