There are no night buses that I am aware of.
Green Bus has Chiang Mai to Chiang Khong routes (stops in Chiang Rai on the way), but they are daytime schedules. Most bus companies try to avoid driving the road between Chiang Mai and Chiang Rai at night, as it is a winding mountain route with less than perfect drivers (ie post drinking drivers).
Credit:stackoverflow.com‘
4 Mar, 2024
4 Mar, 2024
4 Mar, 2024