The busiest route in and out of Sikkim is the road between Gangtok and Siliguri. The town of Bagdogra at a distance of 124 km from Gangtok has the nearest airport. Flights from Bagdogra can be booked at the Indian Airlines office on Tibet Road in Gangtok (Phone 03592-23099). There are regular flights to Guwahati, Calcutta, and Delhi from Bagdogra.
The nearest railway stations from Gangtok are New Jalpaiguri (125 km) and Siliguri (144 km) connected to Delhi, Calcutta, Guwahati, and other important cities in India.
Gangtok is connected by road to Darjeeling, Kalimpong, and Siliguri. Cars, luxury coaches and jeeps are available for hire in the town. There are also regular bus services run by the Sikkim Nationalized Transport.