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

Return flights

04 Dec - 08 Dec	Vueling Airlines
05 Dec - 08 Dec	Air France
05 Dec - 09 Dec	Air France
01 Dec - 08 Dec	Air France
02 Dec - 11 Dec	Air France
02 Dec - 10 Dec	Air France
03 Dec - 10 Dec	Air France
03 Dec - 09 Dec	Air France
02 Dec - 09 Dec	Air France
02 Dec - 07 Dec	Air France
31 Dec - 26 Jan	Lufthansa
31 Dec - 27 Jan	LATAM Airlines Group	direct
25 Dec - 25 Jan	Delta
08 Dec - 20 Jan	Delta
03 Dec - 27 Jan	Delta
04 Dec - 27 Jan	Delta
08 Dec - 25 Jan	Delta
07 Dec - 20 Jan	Delta
25 Dec - 23 Jan	Delta
04 Dec - 26 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 686€

Return flights