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

Return flights

08 Dec - 28 Jan	Air Europa
02 Dec - 10 Dec	GOL Linhas Aéreas
09 Dec - 15 Dec	Air China
08 Dec - 29 Dec	Iberia
01 Dec - 12 Jan	Air China
10 Dec - 16 Dec	Royal Air Maroc
10 Dec - 16 Jan	Royal Air Maroc
05 Dec - 11 Dec	Royal Air Maroc
03 Dec - 08 Dec	Royal Air Maroc
01 Dec - 03 Jan	Air China
16 Dec - 21 Jan	Air Europa
22 Dec - 14 Jan	Avianca
11 Dec - 05 Jan	Air Europa
08 Dec - 16 Dec	Air Europa
28 Dec - 14 Jan	Avianca
29 Dec - 14 Jan	Avianca
23 Dec - 12 Jan	Royal Air Maroc
05 Dec - 15 Dec	Royal Air Maroc
04 Dec - 08 Dec	LATAM Airlines Group
05 Dec - 10 Dec	TAP

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 663€

Return flights