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

Return flights

10 Dec - 20 Jan	Royal Air Maroc
15 Dec - 19 Jan	Air Europa
09 Dec - 30 Dec	Air Europa
01 Dec - 08 Dec	TAP
10 Dec - 28 Jan	Air Europa
15 Dec - 20 Jan	Air Europa
10 Dec - 13 Jan	Royal Air Maroc
08 Dec - 29 Jan	Air Europa
08 Dec - 21 Jan	Air Europa
11 Dec - 20 Jan	LATAM Airlines Group
05 Dec - 24 Dec	Iberia
04 Dec - 30 Jan	Air Europa
09 Dec - 19 Jan	Air Europa
01 Dec - 15 Dec	TAP
16 Dec - 28 Dec	Air China
15 Dec - 29 Dec	Air China
05 Dec - 15 Dec	Royal Air Maroc
05 Dec - 31 Dec	LATAM Airlines Group
01 Dec - 31 Dec	Iberia
15 Dec - 30 Dec	Air Europa

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 687€

Return flights