AirHint found the following cheapest return flights from Kathmandu (KTM) to Dhaka (DAC) in September 2025 (see full year).

Return flights

25 Sep - 30 Sep	Biman Bangladesh Airlines	direct
25 Sep - 02 Oct	Biman Bangladesh Airlines	direct
28 Sep - 05 Oct	Biman Bangladesh Airlines	direct
05 Sep - 07 Sep	Air India
23 Sep - 04 Oct	Air India
12 Sep - 19 Sep	Air India
18 Sep - 22 Sep	Air India
18 Sep - 25 Sep	Air India

Also check the deals for one-way flights from Kathmandu to Dhaka 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 Kathmandu to Dhaka in September from 200€

Return flights