Assam to Sikkim · 509 km · Compare trains, buses & driving options
The straight-line distance from Diphu to Gangtok is approximately 509 km (316 miles). By road, the distance increases to about 761 km due to terrain, highways, and road networks connecting Assam to Sikkim.
Gangtok does not have its own commercial airport. The nearest airport is Bagdogra (IXB). Fly to the nearest airport and continue by road or rail.
Search Flights to Nearest AirportIndian Railways connects Diphu and Gangtok with multiple daily services. The journey takes approximately 11 hrs 42 min. Rajdhani and Shatabdi express trains are faster, while mail and passenger trains make more stops but cost less.
Book in advance through IRCTC, especially during festivals and holidays when seats fill up quickly.
Check Trains on IRCTCBus travel is a popular and affordable option for the Diphu to Gangtok route. The journey takes approximately 15 hrs 13 min covering ~761 km. Both government and private operators service this route.
Night buses are popular for this distance — travel while you sleep and arrive fresh at your destination.
Search Diphu to Gangtok BusesThe drive from Diphu to Gangtok is a long one — approximately 761 km taking around 9 hrs 3 min. Plan at least one overnight halt. Fatigue driving on Indian highways is dangerous.
For official travel information, regulations, and booking services:
IRCTC — Indian Railway Catering and Tourism Corporation — Book train tickets online
Airports Authority of India — Airport information and flight status
DGCA — Directorate General of Civil Aviation — Indian aviation regulator
Incredible India — Official tourism portal of India