AirHint found the following cheapest return flights from Porto Alegre (POA) to London (STN) in March 2026 (see full year).

Return flights

23 Mar - 10 Apr	Azul Airlines
10 Mar - 18 Mar	Azul Airlines
03 Mar - 13 Mar	Azul Airlines
10 Mar - 17 Mar	Azul Airlines
28 Mar - 10 Apr	Azul Airlines
07 Mar - 12 Mar	GOL Linhas Aéreas
26 Mar - 14 Apr	Azul Airlines
10 Mar - 21 Mar	Azul Airlines
19 Mar - 30 Mar	GOL Linhas Aéreas
05 Mar - 18 Mar	Azul Airlines
05 Mar - 17 Mar	Azul Airlines
20 Mar - 20 Apr	Azul Airlines
14 Mar - 29 Mar	LATAM Airlines Group
05 Mar - 27 Mar	GOL Linhas Aéreas
27 Mar - 04 Apr	Azul Airlines

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

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 March from 719€

Return flights