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

Return flights

16 Sep - 07 Oct	Ryanair
22 Sep - 07 Oct	Ryanair
29 Sep - 10 Oct	Wizz Air
25 Sep - 02 Oct	easyJet
09 Sep - 07 Oct	Ryanair
22 Sep - 30 Sep	Ryanair
11 Sep - 18 Sep	Wizz Air UK
10 Sep - 08 Oct	easyJet
26 Sep - 03 Oct	Wizz Air UK
10 Sep - 01 Oct	easyJet
12 Sep - 19 Sep	Wizz Air UK
24 Sep - 08 Oct	easyJet
17 Sep - 30 Sep	easyJet
28 Sep - 15 Oct	Wizz Air Malta
15 Sep - 29 Sep	Wizz Air UK
10 Sep - 17 Sep	easyJet
10 Sep - 26 Sep	Wizz Air UK
09 Sep - 17 Sep	Wizz Air UK
16 Sep - 24 Sep	Wizz Air UK
18 Sep - 30 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 633€

Return flights