Go Suzhou by Bus
Arriving Suzhou By plane
Suzhou doesn't have a passenger airport. The closest airports with flights of use to most travelers are in Shanghai. There is one in Wuxi which is closer, but it serves mostly domestic flights. Nanjing and Hangzhou are also an alternative.
Via Shanghai
Pudong International Airport (IATA: PVG ICAO: ZSPD) has most international flights and Hongqiao Airport (IATA: SHA ICAO: ZSSS) has mostly domestic flights. They are 120 km (75 mi) and 86 km (53 mi) away from Suzhou respectively but regular Shuttle buses run between Suzhou and the airports daily, taking about one hour and forty minutes to get you where you want to go.
Shuttle bus services between Suzhou and Shanghai Airports
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Shanghai-Hongqiao to Suzhou. Departs from Shanghai Hongqiao Airport. On the hour from 10AM-4PM; and one at 5:30PM and 7PM. ¥50.
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Shanghai-Pudong to Suzhou, 26 kerry rd. Departs from the parking lot on the 2nd floor of Terminal 1 building. Almost hourly 10:40AM-7:40PM ¥82.
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Suzhou to Shanghai-Pudong. Departs from the CEAG (China Eastern Airlines Group) ticket office (No.115, Ganjiang West Rd). Almost hourly 6:20AM-2:50PM. ¥80.
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Suzhou to Shanghai-Hongqiao. The China Eastern Airlines buses going to Pudong pass through Hongqiao first.
A shuttle bus between Pudong and Hongqiao leaves every 10 minutes from 6AM-9PM and costs ¥30
Via Hangzhou
Intercity Bus between Suzhou and Hangzhou airports. You can go to Waiting Room,the location is North of Entrance 5 to the Arrival Hall, First Level of Terminal Building. Price range is CNY20/per~CNY30per.
Via Wuxi
Wuxi Airport is situated to the southeast of Wuxi and has several domestic and few international flights (e.g. to Taiwan) From airport to Wuxi city center (Wuxi train station) there are infrequent (every 30 minutes) buses, just on the right side when you exit the airport (see blue plate with chinese characters and timetable for 1,2,3 routes). Allow at least 40 minutes to ride to Wuxi center and about 15 minutes for a ride between Wuxi and Suzhou on a high-speed train.
from Wikitravel