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

Return flights

07 Sep - 23 Sep	Air India
13 Sep - 28 Sep	Air India
25 Sep - 11 Oct	Air India
23 Sep - 28 Sep	Air India
24 Sep - 28 Sep	Air India
16 Sep - 29 Sep	Air India
28 Sep - 13 Oct	Air India
25 Sep - 20 Oct	Air India
24 Sep - 07 Oct	Air India
08 Sep - 07 Oct	Air India
22 Sep - 07 Oct	Air India
09 Sep - 07 Oct	Air India
15 Sep - 24 Sep	Air India
16 Sep - 30 Sep	Air India
22 Sep - 24 Sep	Air India
15 Sep - 22 Sep	Air India
15 Sep - 30 Sep	Air India
16 Sep - 12 Oct	Air India
08 Sep - 06 Oct	Air India
22 Sep - 13 Oct	Air India

Also check the deals for one-way flights from London 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 London to Dhaka in September from $636

Return flights