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

Return flights

07 May - 24 May	LATAM Airlines Group
04 May - 17 May	Azul Airlines
06 May - 16 May	LATAM Airlines Group
28 May - 09 Jun	Azul Airlines
28 May - 14 Jun	Azul Airlines
06 May - 14 May	LATAM Airlines Group

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

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 May from 933€

Return flights