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

Return flights

16 Sep - 24 Sep	Ryanair
03 Sep - 24 Sep	Ryanair
13 Sep - 24 Sep	Ryanair
23 Sep - 16 Oct	Ryanair
16 Sep - 26 Sep	Ryanair
17 Sep - 26 Sep	Ryanair
17 Sep - 28 Sep	Ryanair
22 Sep - 12 Oct	Ryanair
09 Sep - 24 Sep	Ryanair
08 Sep - 28 Sep	Ryanair
18 Sep - 26 Sep	Ryanair
08 Sep - 13 Oct	Ryanair
10 Sep - 21 Sep	Ryanair
24 Sep - 17 Oct	Ryanair
23 Sep - 06 Oct	Ryanair
22 Sep - 16 Oct	Ryanair
25 Sep - 14 Oct	Ryanair
24 Sep - 16 Oct	Ryanair
23 Sep - 17 Oct	Ryanair
10 Sep - 10 Oct	Ryanair

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 651€

Return flights