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

Return flights

27 Sep - 13 Oct	Avianca
30 Sep - 08 Oct	Avianca
27 Sep - 30 Sep	Avianca
29 Sep - 18 Oct	Avianca
24 Sep - 07 Oct	Avianca
20 Sep - 27 Sep	Avianca
22 Sep - 29 Sep	Avianca
22 Sep - 28 Sep	Avianca
29 Sep - 17 Oct	Avianca
20 Sep - 07 Oct	Avianca
25 Sep - 07 Oct	Avianca
29 Sep - 09 Oct	Avianca
30 Sep - 10 Oct	LATAM Airlines Group	direct
26 Sep - 13 Oct	British Airways
25 Sep - 30 Sep	LATAM Airlines Group
24 Sep - 30 Sep	LATAM Airlines Group
21 Sep - 30 Sep	Avianca
01 Sep - 28 Sep	Avianca
06 Sep - 29 Sep	Avianca
09 Sep - 15 Sep	Avianca

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 690€

Return flights