AirHint found the following cheapest return flights from London (LCY) to Rio De Janeiro (GIG) in September 2026 (see full year).

Return flights

15 Sep - 29 Sep	SWISS
14 Sep - 29 Sep	SWISS
21 Sep - 05 Oct	SWISS
08 Sep - 21 Sep	SWISS
17 Sep - 28 Sep	KLM
07 Sep - 20 Sep	SWISS
01 Sep - 15 Sep	SWISS
01 Sep - 20 Sep	SWISS
15 Sep - 15 Oct	SWISS
10 Sep - 24 Sep	Lufthansa
17 Sep - 24 Sep	KLM
16 Sep - 23 Sep	KLM
18 Sep - 04 Oct	Lufthansa
27 Sep - 04 Oct	KLM
30 Sep - 04 Oct	Lufthansa
19 Sep - 03 Oct	KLM
26 Sep - 03 Oct	KLM

Also check the deals for one-way flights from London to Rio De Janeiro 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 Rio De Janeiro in September from 753€

Return flights