AirHint found the following cheapest return flights from Rio De Janeiro (GIG) to London (LHR) in September 2025 (see full year).

Return flights

24 Sep - 05 Oct	Air France
23 Sep - 12 Oct	LATAM Airlines Group
28 Sep - 15 Oct	TAP
07 Sep - 14 Sep	KLM
18 Sep - 25 Sep	KLM
23 Sep - 30 Sep	KLM
25 Sep - 30 Sep	KLM
24 Sep - 29 Oct	Air France
07 Sep - 16 Sep	KLM
10 Sep - 15 Sep	LATAM Airlines Group
08 Sep - 01 Oct	Air France
18 Sep - 21 Sep	KLM
19 Sep - 06 Oct	Air France
03 Sep - 10 Sep	LATAM Airlines Group
30 Sep - 28 Oct	KLM
15 Sep - 21 Sep	Air France
05 Sep - 12 Sep	KLM
18 Sep - 02 Oct	KLM
22 Sep - 02 Oct	KLM
19 Sep - 10 Oct	Air France

Also check the deals for one-way flights from Rio De Janeiro to London 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 Rio De Janeiro to London in September from $944

Return flights