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

Return flights

04 Aug - 10 Sep	Air France
03 Aug - 26 Aug	Air France
04 Aug - 20 Aug	Air France
03 Aug - 30 Aug	Air France
03 Aug - 20 Aug	Air France
05 Aug - 26 Aug	Air France
03 Aug - 19 Aug	Air France
03 Aug - 31 Aug	Air France
05 Aug - 21 Aug	Air France
06 Aug - 28 Aug	SWISS
01 Aug - 30 Aug	Air France
04 Aug - 04 Sep	Air France
01 Aug - 08 Sep	Air France
01 Aug - 02 Sep	Air France
03 Aug - 07 Sep	LATAM Airlines Group	direct
12 Aug - 03 Sep	Air France
21 Aug - 14 Sep	TAP
01 Aug - 08 Sep	LATAM Airlines Group	direct
12 Aug - 13 Sep	Air France
12 Aug - 17 Sep	SWISS

Also check the deals for one-way flights from Sao Paulo to London 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 Sao Paulo to London in August from $736

Return flights