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

Return flights

27 Sep - 07 Oct	Wizz Air UK
09 Sep - 16 Sep	Ryanair
08 Sep - 24 Sep	easyJet
02 Sep - 09 Sep	Wizz Air UK
29 Sep - 07 Oct	easyJet
29 Sep - 10 Oct	easyJet
06 Sep - 24 Sep	Ryanair
01 Sep - 20 Sep	easyJet
15 Sep - 24 Sep	Ryanair
07 Sep - 07 Oct	Ryanair
17 Sep - 24 Sep	easyJet
01 Sep - 17 Sep	easyJet
01 Sep - 30 Sep	Wizz Air UK
17 Sep - 17 Oct	easyJet
10 Sep - 17 Sep	easyJet
28 Sep - 05 Oct	easyJet
22 Sep - 10 Oct	Ryanair
11 Sep - 09 Oct	easyJet
18 Sep - 18 Oct	easyJet
18 Sep - 04 Oct	easyJet

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 639€

Return flights