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

Return flights

05 Dec - 15 Dec	Air Europa
04 Dec - 14 Dec	Air Europa
02 Dec - 07 Dec	Air Europa
07 Dec - 14 Dec	Royal Air Maroc
01 Dec - 15 Jan	Air Europa
10 Dec - 15 Jan	Air Europa
10 Dec - 14 Jan	Air Europa
05 Dec - 16 Jan	Air Europa
06 Dec - 17 Jan	Air Europa
08 Dec - 28 Dec	TAP
24 Dec - 15 Jan	TAP
11 Dec - 09 Jan	Wizz Air UK
30 Dec - 23 Jan	Vueling Airlines
25 Dec - 31 Dec	TAP
28 Dec - 24 Jan	TAP
15 Dec - 30 Jan	Air Europa
15 Dec - 29 Dec	TAP
11 Dec - 20 Dec	TAP
12 Dec - 21 Dec	Air Europa
13 Dec - 28 Dec	SWISS

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 $840

Return flights