Kolkata to Gangtok Cheapest Way

flight price shown is indicative one-way fares, actual may vary | train price shown is for reserved seat / berth | layover time mentioned is for the fastest route in the layover category, it might change as per your traveling dates.
Fare of Rajdhani, Shatabdi & Duronto may change due to Railways' surge pricing. Know more
Whoa - that's a really nice trip with interesting options.
Travelling by train + bus is the cheapest way of getting there. Kolkata (West Bengal) to Gangtok (Sikkim) distance is 672 km and you can get there by train + bus in just over 15 hours and 6 minutes with fares starting from 956. If you haven't packed any woollens, you still have time to pack them.
Gangtok
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