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

Return flights

09 Dec - 19 Jan	LATAM Airlines Group	direct
04 Dec - 31 Dec	GOL Linhas Aéreas
10 Dec - 29 Dec	Avianca
01 Dec - 15 Jan	LATAM Airlines Group
06 Dec - 24 Dec	TAP
08 Dec - 27 Dec	Avianca
09 Dec - 14 Jan	Avianca
15 Dec - 31 Dec	TAP
14 Dec - 28 Dec	Air Canada
05 Dec - 10 Jan	GOL Linhas Aéreas
10 Dec - 07 Jan	Avianca
01 Dec - 01 Jan	TAP
12 Dec - 27 Dec	TAP
14 Dec - 14 Jan	GOL Linhas Aéreas
17 Dec - 20 Jan	Royal Air Maroc
06 Dec - 10 Jan	LATAM Airlines Group
17 Dec - 29 Dec	Avianca
15 Dec - 23 Jan	LATAM Airlines Group
24 Dec - 31 Dec	TAP
03 Dec - 15 Dec	Avianca

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 620€

Return flights