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

Return flights

26 Sep - 05 Oct	Hainan Airlines
26 Sep - 12 Oct	Hainan Airlines
26 Sep - 09 Oct	Hainan Airlines
24 Sep - 08 Oct	Wizz Air UK
20 Sep - 28 Sep	Wizz Air UK
30 Sep - 04 Oct	Ryanair
30 Sep - 07 Oct	Wizz Air UK
30 Sep - 30 Oct	Ryanair
22 Sep - 11 Oct	Shenzhen Airlines
20 Sep - 27 Sep	Wizz Air UK
29 Sep - 07 Oct	Wizz Air UK
30 Sep - 06 Oct	Ryanair
23 Sep - 28 Sep	Pegasus Airlines
18 Sep - 30 Sep	Etihad Airways
24 Sep - 30 Sep	Ryanair
23 Sep - 30 Sep	Ryanair
24 Sep - 28 Sep	China Eastern
19 Sep - 30 Sep	Pegasus Airlines
24 Sep - 27 Sep	Wizz Air UK
23 Sep - 27 Sep	Pegasus Airlines

Also check the deals for one-way flights from London to Jakarta 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 Jakarta in September from $566

Return flights