By Air
Xiaoshan International Airport (HGH), around 27km from the downtown, mainly serves Hangzhou and nearby cities. It operates many air routes with Terminal A (International) and Terminal B (Domestic). The international destinations include Singapore, Souel, Amsterdam, Pattaya, Phuket Island, Osaka, Tokyo, and Chiengmai. Domestic air routes from/to Beijing, Chengdu, Jiuzhaigou, Guangzhou, Guilin, Xian, Kunming, Lhasa, and Xiamen are available.
If delegates prefer landing at Beijing, Guangzhou, etc, they can transfer to Xiaoshan International Airport.
By Train
There are three railway stations in the city. High speed lines from/to Shanghai, Nanjing, Ningbo, and Changsha transport the most passengers.
Hangzhou Railway Station: Located at East Ring Road, Shangcheng District, it is also known as Chengzhan Railway Station. The station mainly operates trains that arrive at the city as a terminal station.
Hangzhou East Railway Station: It lies on Tiancheng Road, Jianggan District. Opened in 2013, it is now one of the largest high speed train hubs in east China, transporting a large amount of passengers daily.
Hangzhou South Railway Station: Originally named Xiaoshan Railway Station, it is around 27km from Chengzhan Railway Station. The station hosts trains passing through the city. Now it is closed for renovation since Jul. 2013 and is expected to reopen in June of 2018.
Other Tips
If landing at Shanghai Hongqiao International Airport (by train is recommended):
From Shanghai Hongqiao International Airport to Shanghai Hongqiao Railway Station: by Metro Line 2, travel time: about 10 minutes; alternatively, by taxi, travel time: 20 minutes.
From Hongqiao Railway Station to Hangzhou Railway Station (or Hangzhou East Railway Station): by train, more than 100 trains in total, travel time: 1 hour.
If landing at Shanghai Pudong International Airport:
Plan 1, by coach
From Shanghai Pudong International Airport to Hangzhou Huanglong Tourism Distribution Center: by coach, departure intervals: 1 hour, travel time: 3 hours;
From Hangzhou Huanglong Tourism Distribution Center to The Meeting Venue: by taxi, travel time: about 15 minutes.
Plan 2, by train
From Shanghai Pudong International Airport to Shanghai Railway Station: by taxi, travel time: about 1 hour;
From Shanghai Railway Station to Hangzhou Railway Station: by train, 3 trains in total, travel time: 1 hour and 40 minutes.
From Hangzhou Railway Station to The Meeting Venue: by taxi, travel time: about 25 minutes.
Several links that you may find helpful
Hangzhou Xiaoshan International Airport
http://www.hzairport.com/en/
Shanghai Pudong International Airport
http://www.shanghaiairport.com/index_enpdjc.html
China Train Schedule, Tickets Booking & Any Other Travel information
https://www.travelchinaguide.com/china-trains/