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

Return flights

04 Dec - 07 Dec	Air Canada
04 Dec - 10 Dec	Air Canada
04 Dec - 11 Dec	Air Canada
01 Dec - 11 Dec	Air Canada
08 Dec - 30 Jan	SWISS
04 Dec - 31 Dec	KLM
03 Dec - 30 Jan	Lufthansa
09 Dec - 19 Jan	SWISS
04 Dec - 31 Dec	LATAM Airlines Group	direct
01 Dec - 31 Dec	Air Canada
03 Dec - 26 Jan	British Airways
01 Dec - 31 Jan	SWISS
10 Dec - 05 Jan	Air Canada
09 Dec - 19 Jan	British Airways	direct
11 Dec - 30 Dec	SWISS
01 Dec - 08 Dec	SWISS
13 Dec - 31 Jan	LATAM Airlines Group
10 Dec - 03 Jan	Air France
10 Dec - 10 Jan	Air Canada
05 Dec - 29 Dec	SWISS

Also check the deals for one-way flights from Sao Paulo to London 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 Sao Paulo to London in December from $667

Return flights