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

Return flights

24 Sep - 06 Oct	Air France
08 Sep - 22 Sep	GOL Linhas Aéreas
25 Sep - 26 Oct	Air France
20 Sep - 05 Oct	Air France
24 Sep - 10 Oct	Air France
29 Sep - 14 Oct	Air France
30 Sep - 13 Oct	Air France
18 Sep - 05 Oct	KLM
29 Sep - 09 Oct	TAP
03 Sep - 24 Sep	Air France
17 Sep - 01 Oct	Air France
16 Sep - 06 Oct	Air France
07 Sep - 14 Sep	KLM
06 Sep - 17 Sep	Air France
15 Sep - 18 Sep	Air France
15 Sep - 30 Sep	Air France
10 Sep - 30 Sep	Air France
11 Sep - 15 Sep	KLM
01 Sep - 08 Sep	KLM
01 Sep - 09 Sep	KLM

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 965€

Return flights