AirHint found the following cheapest return flights from London (LCY) to Sao Paulo (GRU) in September 2025 (see full year).

Return flights

03 Sep - 28 Oct	KLM
11 Sep - 14 Oct	KLM
08 Sep - 13 Oct	KLM
03 Sep - 29 Sep	ITA Airways
08 Sep - 29 Sep	KLM
19 Sep - 24 Sep	KLM
08 Sep - 25 Sep	KLM
15 Sep - 30 Sep	KLM
08 Sep - 27 Sep	KLM
08 Sep - 30 Sep	KLM
18 Sep - 01 Oct	KLM
15 Sep - 05 Oct	KLM
08 Sep - 23 Sep	KLM
17 Sep - 11 Oct	KLM
15 Sep - 27 Sep	KLM
18 Sep - 11 Oct	KLM
15 Sep - 23 Sep	KLM
12 Sep - 12 Oct	KLM
23 Sep - 07 Oct	ITA Airways
24 Sep - 09 Oct	ITA Airways

Also check the deals for one-way flights from London to Sao Paulo in September.

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.

Book a cheap hotel in Sao Paulo

Cheap car rent in Sao Paulo

Cheapest return flights from London to Sao Paulo in September from $877

Return flights