There is no airport in Harsil. The nearest airport is Jolly Grant Airport in Dehradun, which is about 120 km from Harsil.
One can reach Harsil by road from Uttarkashi. The distance is about 73 km.
There is no railway station in Harsil. The nearest railway station is at Uttarkashi, which is about 26 km from Harsil.
There is no public transport in Harsil. However, there are private taxis and shared jeeps that can take tourists around the town.