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

Return flights

05 Oct - 21 Oct	Avianca
20 Oct - 29 Oct	Avianca
06 Oct - 21 Oct	Avianca
20 Oct - 05 Nov	Avianca
28 Oct - 11 Nov	Avianca
05 Oct - 05 Nov	Avianca
28 Oct - 12 Nov	Avianca
05 Oct - 12 Nov	Avianca
15 Oct - 29 Oct	Avianca
20 Oct - 27 Oct	Avianca
15 Oct - 22 Oct	Avianca
08 Oct - 21 Oct	Avianca
22 Oct - 29 Oct	Avianca
15 Oct - 21 Oct	Avianca
08 Oct - 22 Oct	Avianca
06 Oct - 03 Nov	Avianca
20 Oct - 19 Nov	Avianca
22 Oct - 05 Nov	Avianca
20 Oct - 12 Nov	Avianca
15 Oct - 02 Nov	Avianca

Also check the deals for one-way flights from Sao Paulo to London 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 Sao Paulo to London in October from 564€

Return flights