AirHint found the following cheapest return flights from London (LHR) to Sao Paulo (GRU) in August 2025 (see full year).

Return flights

25 Aug - 25 Sep	Avianca
25 Aug - 28 Sep	Avianca
24 Aug - 21 Sep	Avianca
26 Aug - 22 Sep	Avianca
29 Aug - 30 Sep	Avianca
25 Aug - 22 Sep	Avianca
20 Aug - 21 Sep	Avianca
20 Aug - 24 Sep	Avianca
31 Aug - 14 Sep	Avianca
24 Aug - 14 Sep	Avianca
14 Aug - 17 Aug	KLM
11 Aug - 17 Aug	Virgin Atlantic	direct
13 Aug - 17 Aug	Air France
17 Aug - 25 Aug	Delta
16 Aug - 27 Aug	Delta
20 Aug - 27 Aug	Delta
21 Aug - 27 Aug	Delta
18 Aug - 27 Aug	Delta
17 Aug - 27 Aug	Delta
19 Aug - 22 Aug	SWISS

Also check the deals for one-way flights from London to Sao Paulo in August.

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 Sao Paulo in August from 692€

Return flights