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

Return flights

01 Dec - 07 Dec	Air France
02 Dec - 07 Dec	Air Canada
01 Dec - 09 Dec	Air France
05 Dec - 07 Dec	KLM
01 Dec - 09 Dec	LATAM Airlines Group	direct
03 Dec - 07 Dec	Air Canada
10 Dec - 18 Jan	Delta
10 Dec - 20 Jan	Delta
31 Dec - 25 Jan	Delta
02 Dec - 25 Jan	Delta
05 Dec - 26 Jan	Delta
31 Dec - 27 Jan	Delta
25 Dec - 24 Jan	Delta
30 Dec - 24 Jan	TAP
01 Dec - 12 Dec	Air France
01 Dec - 15 Dec	Air France
01 Dec - 16 Dec	Air France
05 Dec - 11 Dec	TAP
30 Dec - 29 Jan	TAP
30 Dec - 27 Jan	TAP

Also check the deals for one-way flights from London to Sao Paulo in December.

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 December from $854

Return flights