Gangtok, the capital of Sikkim, is accessible via New Jalpaiguri (NJP) or Bagdogra. From Doda, you must first reach Jammu Tawi station or Jammu Airport to travel to NJP or Bagdogra. From there, you can take a taxi or bus to Gangtok, which is about 120 km away.
Total Distance: Driving distance 2100 km, straight-line air distance 1700 km.
Take a train to NJP and then a taxi to Gangtok.
Fly to Bagdogra and then take a taxi to Gangtok.
March to June and October to December, when the weather is pleasant.