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

Return flights

04 Dec - 07 Dec	Ryanair
01 Dec - 07 Dec	Ryanair
01 Dec - 06 Dec	Wizz Air Malta
01 Dec - 09 Dec	Wizz Air Malta
03 Dec - 10 Dec	Air Canada
02 Dec - 07 Dec	Air Canada
01 Dec - 08 Dec	Air Canada
03 Dec - 07 Dec	Air Canada
01 Dec - 07 Dec	LATAM Airlines Group	direct
02 Dec - 07 Dec	LATAM Airlines Group	direct
11 Dec - 26 Jan	Air Canada
10 Dec - 26 Jan	Air Canada
11 Dec - 22 Jan	Wizz Air UK
31 Dec - 20 Jan	Delta
31 Dec - 21 Jan	Delta
25 Dec - 25 Jan	Delta
31 Dec - 18 Jan	Delta
25 Dec - 23 Jan	Delta
31 Dec - 19 Jan	Delta
06 Dec - 18 Jan	Delta

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 $812

Return flights