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

Return flights

14 Dec - 20 Jan	LATAM Airlines Group
13 Dec - 22 Jan	LATAM Airlines Group
13 Dec - 17 Jan	LATAM Airlines Group
16 Dec - 21 Jan	Azul Airlines
15 Dec - 21 Jan	GOL Linhas Aéreas
16 Dec - 19 Jan	Azul Airlines
17 Dec - 20 Jan	Azul Airlines
14 Dec - 27 Dec	LATAM Airlines Group
14 Dec - 28 Dec	LATAM Airlines Group
21 Dec - 05 Jan	LATAM Airlines Group
13 Dec - 28 Dec	Azul Airlines
23 Dec - 15 Jan	Azul Airlines
22 Dec - 22 Jan	Azul Airlines
05 Dec - 12 Dec	Azul Airlines
18 Dec - 26 Dec	Azul Airlines

Also check the deals for one-way flights from Porto Alegre to London in December.

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 December from 963€

Return flights