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

Return flights

03 Dec - 10 Dec	ITA Airways
01 Dec - 28 Jan	ITA Airways
04 Dec - 11 Dec	ITA Airways
01 Dec - 31 Dec	Royal Air Maroc
01 Dec - 14 Dec	Royal Air Maroc
14 Dec - 20 Jan	Royal Air Maroc
14 Dec - 18 Jan	Royal Air Maroc
03 Dec - 21 Jan	Royal Air Maroc
08 Dec - 31 Dec	Royal Air Maroc
04 Dec - 16 Dec	Air Europa
02 Dec - 07 Dec	Air Europa
03 Dec - 18 Dec	Air Europa
05 Dec - 23 Jan	Royal Air Maroc
03 Dec - 31 Jan	Air Europa
03 Dec - 13 Dec	Air Europa
01 Dec - 29 Jan	ITA Airways
04 Dec - 19 Jan	Air Europa
15 Dec - 18 Jan	Royal Air Maroc
05 Dec - 31 Dec	Royal Air Maroc
10 Dec - 20 Jan	Royal Air Maroc

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 635€

Return flights