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

Return flights

10 Sep - 23 Sep	Ryanair
20 Sep - 05 Oct	Ryanair
11 Sep - 07 Oct	Ryanair
07 Sep - 16 Sep	Ryanair
22 Sep - 17 Oct	easyJet
08 Sep - 26 Sep	easyJet
23 Sep - 30 Sep	easyJet
24 Sep - 07 Oct	easyJet
02 Sep - 26 Sep	easyJet
09 Sep - 30 Sep	easyJet
07 Sep - 14 Sep	Ryanair
02 Sep - 29 Sep	Ryanair
16 Sep - 30 Sep	easyJet
04 Sep - 22 Sep	Ryanair
29 Sep - 06 Oct	easyJet
24 Sep - 06 Oct	easyJet
19 Sep - 19 Oct	easyJet
19 Sep - 05 Oct	easyJet
25 Sep - 07 Oct	easyJet
23 Sep - 05 Oct	easyJet

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 $813

Return flights