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

Return flights

15 Sep - 08 Oct	Air China
22 Sep - 01 Oct	Air China
21 Sep - 06 Oct	Air China
14 Sep - 28 Sep	Avianca
10 Sep - 21 Sep	Avianca
18 Sep - 28 Sep	Avianca
18 Sep - 08 Oct	Avianca
10 Sep - 22 Sep	Iberia
01 Sep - 11 Sep	Air China
25 Sep - 10 Oct	Royal Air Maroc
18 Sep - 11 Oct	Air China
10 Sep - 17 Sep	Avianca
25 Sep - 02 Oct	Air China
18 Sep - 29 Sep	Iberia
11 Sep - 25 Sep	Iberia
14 Sep - 29 Sep	Air China
01 Sep - 10 Sep	Air China
23 Sep - 07 Oct	Avianca
25 Sep - 11 Oct	Iberia
11 Sep - 10 Oct	Iberia

Also check the deals for one-way flights from Sao Paulo to London 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 Sao Paulo to London in September from 503€

Return flights