Airport: There are 5 airports near Langmusi: Xining, Lanzhou, Chengdu, Xiahe and Jiuzhaigou
There is a straight flight between Tianjing and Xiahe. From Xiahe airport, it is only 2.5h drivng to Langmusi. And Jiuzhaigou airport is around 4h driving to here.
Train station: the nearest train stations are located at Xining, Lanzhou and Chengdu.
After you arrive the airport or train station, you need to take bus or car to get to Langmusi.