What is earliest bus from Hangzhou sports stadium to Shanghai pudong airport?

Do you start from Olympic Sports Center? Anyway, you can take a bus to PVG from Wulinmen Civil Aviation Office at No. 392, Tiyuchang Road; or from Tourist Dispatch Center inside Huanglong Stadium at No. 3, Huanglong Road.
The first bus departs from the former at 05:30, and from the latter at 06:40. In general, the trip takes about 3.5 hours. The fare is CNY 110 per person.
Nice trip to you!