West Bengal to Sikkim · 574 km · Compare trains, buses & driving options
The straight-line distance from Calcutta to Lachen is approximately 574 km (357 miles). By road, the distance increases to about 762 km due to terrain, highways, and road networks connecting West Bengal to Sikkim.
Lachen 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 Calcutta and Lachen with multiple daily services. The journey takes approximately 11 hrs 43 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 Calcutta to Lachen route. The journey takes approximately 15 hrs 14 min covering ~762 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 Calcutta to Lachen BusesThe drive from Calcutta to Lachen is a long one — approximately 762 km taking around 10 hrs 38 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
Flights, hotels, buses and trip bundles — honest prices.