Transport in Sikkim

Sikkim does not have any airports or railheads because of its rough terrain. The closest airport, Bagdogra Airport, is near the town of Siliguri, West Bengal. The airport is about 124 km away from Gangtok.

A regular helicopter service run by the Sikkim Helicopter Service connects Gangtok to Bagdogra; the flight is thirty minutes long. The Gangtok helipad is the only civilian helipad in the state. The closest railway station is New Jalpaiguri which is situated sixteen kilometres from Siliguri.

National Highway 31A links Siliguri to Gangtok. The highway is an all-weather metalled road which mostly runs parallel of the river Teesta, entering Sikkim at Rangpo. Numerous public and privately run bus and jeep services connect the airport, railway station, and Siliguri to Gangtok. A branch of the highway from Melli connects western Sikkim.

Towns in southern and western Sikkim are connected to the northern West Bengal hill stations of Kalimpong and Darjeeling. Within the state, four wheel drives are the most popular means of transport, as they can navigate rocky slopes. Mini-buses link the smaller towns to the state and district headquarters.