The cheapest airline flying to Hangzhou is XiamenAir. They are 68% cheaper than Scoot-Tiger. (Average prices, based on 210 datapoints.)
At Hangzhou the most flights depart around 12:00. (Hourly flights, based on 311 datapoints.)
From Hangzhou it is on average the cheapest to fly to Guangzhou and to Shenzhen. (Average prices, based on 112 datapoints.)
From Hangzhou most of the flights depart to Chongqing, second best connected from Hangzhou is Guangzhou. (Daily flights, based on 80 datapoints.)