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

Return flights

06 Oct - 13 Oct	TAP
21 Oct - 28 Oct	TAP
12 Oct - 30 Oct	TAP
16 Oct - 26 Oct	TAP
17 Oct - 28 Oct	TAP
09 Oct - 20 Oct	TAP
07 Oct - 14 Oct	TAP
24 Oct - 27 Oct	TAP
20 Oct - 28 Oct	TAP
13 Oct - 27 Oct	TAP
29 Oct - 12 Nov	SWISS
14 Oct - 19 Nov	TAP
14 Oct - 25 Nov	TAP
23 Oct - 19 Nov	TAP
23 Oct - 25 Nov	TAP
29 Oct - 19 Nov	TAP
29 Oct - 25 Nov	TAP
31 Oct - 09 Nov	TAP
23 Oct - 13 Nov	Air France
05 Oct - 19 Nov	TAP

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 $679

Return flights