AirHint found the following cheapest one-way flights from Kolkata (CCU) to Thimphu (PBH) in September 2025 (see full year).

One-Way flights

12 Sep	IndiGo
19 Sep	Bhutan Airlines	direct
22 Sep	Bhutan Airlines	direct
20 Sep	IndiGo
14 Sep	IndiGo
12 Sep	Druk Air	direct
20 Sep	Hahn Air Technologies	direct
27 Sep	Akasa Air
28 Sep	IndiGo
30 Sep	Air India

Also check the deals for return flights from Kolkata to Thimphu in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from Kolkata to Thimphu in September from $237

One-Way flights