Shanghai Pudong International Airport is the primary international airport serving Shanghai, and a major aviation hub for Asia. The city’s other major airport, Hongqiao, mainly serves domestic flights. The airport is the main hub for China Eastern Airlines and Shanghai Airlines. It is also the hub for privately owned Juneyao Airlines and Spring Airlines.
Pudong Airport is a fast-growing hub for both passenger and cargo traffic. It served a total of 51 million passengers in 2014, making it the third busiest airport in mainland China.
Prior to the establishment of Pudong International Airport, Shanghai Hongqiao International Airport was the primary airport of Shanghai. During the 1990s, the expansion of Hongqiao Airport to meet growing demand became impossible as the surrounding urban area was developing significantly, and an alternative to assume all international flights had to be sought. A suitable site was selected on the coast of the Pudong development zone to the east of Shanghai. Construction of the first phase of the new Shanghai Pudong International Airport began in 1997, and was opened in 1999.
Source: Wikipedia