AirHint found the following cheapest return flights from Porto Alegre (POA) to London (LHR) in September 2026 (see full year).
Return flights
| 30 Sep - 10 Oct | LATAM Airlines Group | ||
| 24 Sep - 02 Oct | TAP | ||
| 12 Sep - 24 Sep | Azul Airlines | ||
| 04 Sep - 15 Sep | GOL Linhas Aéreas | ||
| 01 Sep - 30 Sep | Azul Airlines | ||
| 04 Sep - 11 Sep | British Airways |
Also check the deals for one-way flights from Porto Alegre to London in September.
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