Posted by sebwu (402 days ago)
The KCR from Tsim Sha Tsui East to Shenzhen takes 40 minutes and costs around 36 HK$. After crossing the border to Shenzhen, you can take mini-bus no. K568 to the airport for 20 RMB. Depending on traffic conditions, that mini-bus takes 40 - 50 minutes. So altogether the fare is around 56 HK$ (or even less if your location is closer to the Shenzhen border). If you are coming from Shenzhen airport, you can take the K568 mini-bus right outside the domestic arrival hall.
Apart from the K568 mini-bus, there are large (blue) and much more comfortable airport shuttle buses that leave from the Ke Xue Guan metro station in Shenzhen (and go to the border directly in the late afternoon / evening). Those buses are more expensive (40 RMB) and less convenient than the mini-bus when coming from or going to Hong Kong, because the Ke Xue Guan metro station is not close to the border.
(I am based in Hong Kong)