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

Return flights

19 Sep - 22 Oct	easyJet
26 Sep - 30 Oct	Wizz Air
29 Sep - 23 Oct	Wizz Air
22 Sep - 26 Sep	Wizz Air
29 Sep - 22 Oct	Wizz Air
29 Sep - 13 Oct	Wizz Air
19 Sep - 20 Oct	Wizz Air UK
26 Sep - 09 Oct	Wizz Air
29 Sep - 24 Oct	Wizz Air
15 Sep - 21 Sep	Wizz Air UK
22 Sep - 06 Oct	Wizz Air
26 Sep - 12 Oct	Wizz Air
12 Sep - 21 Sep	Wizz Air UK
19 Sep - 23 Sep	Wizz Air UK
14 Sep - 25 Sep	Wizz Air UK
10 Sep - 17 Sep	Wizz Air UK
15 Sep - 19 Sep	Wizz Air UK
12 Sep - 15 Sep	Wizz Air UK
20 Sep - 28 Sep	Wizz Air UK
14 Sep - 24 Sep	Wizz Air UK

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 $658

Return flights