The best price found from United States to Gangtok is on November 28th, 2016, travelling with Jet Airways. See more options, compare prices and book: search flights.
The nearest airport to Sikkim is Bagdogra, 124km from Gangtok, near Siliguri in West Bengal, which has flights to Kolkata, Delhi and Guwahati.
Helicopters operated by Sikkim Helicopter Service shuttle daily from Gangtok to Bagdogra (₹3500, 40 minutes), departing at 11am and returning at 2.30pm. Services are cancelled in adverse weather. There’s a strict maximum 10kg baggage allowance. Tickets are sold by Sikkim Tourism Development Corporation.
Fixed-price taxis and sumos (jeeps) go directly to Bagdogra (₹3000, five hours).
Sikkim’s first airport is planned at Pakyong, 35km from Gangtok, with a tentative completion date of 2016.