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

Return flights

29 Oct - 12 Nov	Avianca
20 Oct - 02 Nov	Avianca
06 Oct - 15 Oct	Avianca
26 Oct - 04 Nov	Avianca
21 Oct - 02 Nov	Avianca
30 Oct - 04 Nov	Avianca
21 Oct - 04 Nov	Avianca
31 Oct - 06 Nov	Avianca
06 Oct - 21 Oct	Avianca
25 Oct - 04 Nov	Avianca
06 Oct - 22 Oct	Avianca
09 Oct - 22 Oct	Avianca
07 Oct - 16 Oct	Avianca
09 Oct - 16 Oct	Avianca
09 Oct - 21 Oct	Avianca
19 Oct - 26 Oct	Avianca
07 Oct - 28 Oct	Avianca
07 Oct - 15 Oct	Avianca
19 Oct - 18 Nov	Avianca
31 Oct - 17 Nov	Avianca

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

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 October from 663€

Return flights