There is no airport in Sikkim, though a foundation stone has been laid down in 2002 for construction of an air strip near Pakyong, East Sikkim which is around 32 km from Gangtok. The nearest airport is Bagdogra in West Bengal (120 Km). There is a helicopter service between Gangtok and Bagdogra. The State has also initiated construction of a number of helipads to connect the district and sub-divisional headquarters and important tourist places.


The closest railway stations are Siliguri (113 km) and New Jalpaiguri (125 Km) connecting Kolkata, Delhi, Guwahati, Lucknow and other important cities. Several proposals are underway for constructing a railway link between Siliguri and Nathula.


Sikkim has a total road length of 2,947.9 km. The state is connected to West Bengal and rest of India through National Highway (NH)-31A. The state Public Works Department (PWD) and the Border Roads Organisation (BRO) maintain the roads. The Sikkim Nationalised Transport (SNT) operates 114 buses (covering 43 routes) and 64 trucks and 33 tankers across the state.

District-wise length of roads (in Km)

Road Type

Length in Km

National Highways (NH)


State Highways


District Roads


Border Roads (Including NH)


Sources: Public Works Roads and Bridges Department, Government of Sikkim, Ministry of Road Transport & Highways.