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

Return flights

10 Aug - 26 Aug	Avianca
06 Aug - 23 Aug	Avianca
03 Aug - 19 Aug	Avianca
05 Aug - 19 Aug	Avianca
03 Aug - 31 Aug	Avianca
03 Aug - 25 Aug	Avianca
04 Aug - 20 Aug	Avianca
04 Aug - 21 Aug	Avianca
04 Aug - 23 Aug	Avianca
06 Aug - 20 Aug	Avianca
06 Aug - 17 Sep	Avianca
06 Aug - 24 Sep	Avianca
07 Aug - 09 Sep	Avianca
04 Aug - 10 Sep	Avianca
06 Aug - 10 Sep	Avianca
03 Aug - 01 Sep	Avianca
07 Aug - 07 Sep	Avianca
03 Aug - 07 Sep	Avianca
10 Aug - 15 Sep	Avianca
03 Aug - 20 Sep	Avianca

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 560€

Return flights