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

Return flights

10 Sep - 21 Sep	Wizz Air Malta
03 Sep - 10 Sep	Ryanair
02 Sep - 18 Sep	Ryanair
18 Sep - 03 Oct	Ryanair
14 Sep - 21 Sep	Vueling Airlines
03 Sep - 14 Sep	Ryanair
10 Sep - 23 Sep	Wizz Air Malta
18 Sep - 28 Sep	Ryanair
23 Sep - 10 Oct	Ryanair
10 Sep - 22 Sep	Ryanair
24 Sep - 29 Sep	ITA Airways
03 Sep - 29 Sep	Ryanair
01 Sep - 30 Oct	TAP
04 Sep - 12 Oct	TAP
02 Sep - 21 Oct	Air France
12 Sep - 12 Oct	TAP
11 Sep - 14 Oct	Air France
03 Sep - 01 Oct	TAP
17 Sep - 19 Oct	TAP
26 Sep - 06 Oct	TAP

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.

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Cheapest return flights from London to Sao Paulo in September from 615€

Return flights