AirHint found the following cheapest return flights from London (LON) to Denpasar (DPS) in September 2025 (see full year).

Return flights

26 Sep - 06 Oct	China Eastern
21 Sep - 17 Oct	China Southern
21 Sep - 16 Oct	China Southern
22 Sep - 16 Oct	China Southern
20 Sep - 19 Oct	China Southern
20 Sep - 17 Oct	China Southern
20 Sep - 16 Oct	China Southern
20 Sep - 13 Oct	China Southern
23 Sep - 16 Oct	China Southern
22 Sep - 24 Oct	Shenzhen Airlines
24 Sep - 30 Sep	Wizz Air Malta
22 Sep - 30 Sep	Wizz Air UK
19 Sep - 30 Sep	Air India
21 Sep - 24 Sep	Air India
21 Sep - 30 Sep	Air India
19 Sep - 24 Sep	Air India
19 Sep - 29 Sep	Air India
22 Sep - 25 Sep	Wizz Air UK
21 Sep - 25 Sep	Air India
23 Sep - 27 Sep	Ryanair

Also check the deals for one-way flights from London to Denpasar 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 Denpasar in September from 464€

Return flights