AirHint found the following cheapest return flights from Porto Alegre (POA) to London (LHR) in October 2025 (see full year).

Return flights

12 Oct - 28 Oct	GOL Linhas Aéreas
07 Oct - 09 Oct	GOL Linhas Aéreas
07 Oct - 20 Oct	Azul Airlines
27 Oct - 12 Nov	LATAM Airlines Group
04 Oct - 11 Oct	GOL Linhas Aéreas
02 Oct - 11 Oct	GOL Linhas Aéreas
15 Oct - 22 Oct	TAP
20 Oct - 29 Oct	Azul Airlines
12 Oct - 29 Oct	LATAM Airlines Group
22 Oct - 24 Oct	SWISS
21 Oct - 24 Oct	LATAM Airlines Group
02 Oct - 01 Nov	LATAM Airlines Group

Also check the deals for one-way flights from Porto Alegre 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 Porto Alegre to London in October from 798€

Return flights