AirHint found the following cheapest return flights from London (STN) to Sao Paulo (GRU) in September 2026 (see full year).

Return flights

09 Sep - 23 Sep	Ryanair
15 Sep - 29 Sep	Turkish Airlines
30 Sep - 05 Oct	Turkish Airlines
14 Sep - 12 Oct	Turkish Airlines
22 Sep - 27 Sep	Turkish Airlines
29 Sep - 04 Oct	Turkish Airlines
01 Sep - 22 Sep	Ryanair
01 Sep - 29 Sep	Ryanair
29 Sep - 03 Oct	Turkish Airlines
01 Sep - 15 Sep	Ryanair
25 Sep - 10 Oct	Turkish Airlines
09 Sep - 24 Sep	Ryanair
09 Sep - 20 Sep	Ryanair
01 Sep - 14 Sep	Turkish Airlines
07 Sep - 13 Sep	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 692€

Return flights