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

Return flights

02 Sep - 05 Sep	Copa
07 Sep - 22 Sep	Copa
26 Sep - 11 Oct	LATAM Airlines Group
26 Sep - 14 Oct	Air France
14 Sep - 21 Sep	Avianca
23 Sep - 29 Sep	LATAM Airlines Group
28 Sep - 06 Oct	Air Europa
22 Sep - 05 Oct	Air France
19 Sep - 24 Sep	LATAM Airlines Group
29 Sep - 13 Oct	Air Europa
05 Sep - 10 Sep	LATAM Airlines Group
13 Sep - 23 Sep	Azul Airlines
21 Sep - 28 Sep	Royal Air Maroc
25 Sep - 30 Sep	Air France
19 Sep - 22 Sep	TAP
28 Sep - 08 Oct	Air France
23 Sep - 06 Oct	Royal Air Maroc
28 Sep - 12 Oct	Air France
28 Sep - 02 Oct	LATAM Airlines Group
26 Sep - 04 Oct	Royal Air Maroc

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 919€

Return flights