Gangtok is about 1500 km from Bulandshahr. The best way is to fly to Bagdogra and then take a taxi to Gangtok. The drive from Bagdogra to Gangtok takes about 4-5 hours. Gangtok is the capital of Sikkim and a beautiful hill station.
Total Distance: Driving distance is 1550 km; straight-line air distance is 1200 km.
Book a pre-paid taxi from Bagdogra airport.
March to June and September to December.