Please be aware that Shanghai has multiple airports and that these results are for all airports serving the city.
The best month to fly between Shanghai and Guangzhou is March and the most expensive month to fly is June. (Average prices, based on 671 datapoints.)
The best day to arrive at Shanghai is Monday and it would be best to avoid Saturday, as prices are on average 91.14% higher than on Monday. (Average prices, based on 281 datapoints.)
The cheapest airline flying from Shanghai to Guangzhou is Spring Airlines. They are 43% cheaper than Shanghai Airlines. (Average prices, based on 707 datapoints.)
The best time to fly is at around 7. (Average prices, based on 757 datapoints.)