AirHint found the following cheapest return flights from Delhi (DEL) to Thimphu (PBH) in September 2025 (see full year).

Return flights

12 Sep - 19 Sep	Air India Express
08 Sep - 12 Sep	Air India Express
01 Sep - 05 Sep	Air India Express
12 Sep - 15 Sep	Air India Express
18 Sep - 22 Sep	IndiGo
01 Sep - 10 Sep	SpiceJet
15 Sep - 22 Sep	IndiGo
13 Sep - 14 Sep	Bhutan Airlines
03 Sep - 06 Sep	IndiGo
17 Sep - 24 Sep	Bhutan Airlines
30 Sep - 10 Oct	Druk Air
29 Sep - 04 Oct	Druk Air
30 Sep - 04 Oct	Druk Air

Also check the deals for one-way flights from Delhi 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 return flights from Delhi to Thimphu in September from $506

Return flights