According to Travel China Guide:
Shanghai has two international airports something no other city in China can boast. Pudong International Airport handles 60% of flights, while the remaining 40% use Hongqiao International Airport. The two airports enjoy convenient transportation links with the center of Shanghai. Here is a map of bus transfers at Pudong and Hongqiao International Airports for your reference:
Pudong International Airport Situated on the south bank of the Yangtze River estuary in east Shanghai, Pudong International Airport, completed in 1999, is about 30 kilometers (19 miles) away from the city center and 40 kilometers (25 miles) from Hongqiao International Airport. In total about fifty airlines have flights to over sixty domestic cities and over seventy cities of other countries and regions.
It has two terminal buildings and the Termial 2 (T2) was newly completed in 2008. There are buses and other means to shuttle between the termials. 52 airlines worldwide has agents in T2 and 13 airlines in T1.
Hongqiao International Airport Located in the west of Shanghai, Hongqiao International Airport is only 13 kilometers (8 miles) from the city center. It mainly handles the domestic flights. There are two terminals with two runways. Terminal 2 (T2) is open into public use on March 16, 2010. Fourteen airlines are in Terminal 2 (T2) and another fourteen airlines are in T1. Passengers should make sure to get to the right terminal.
I hope this can help.
