AirHint found the following cheapest return flights from Rio De Janeiro (SDU) to London (LCY) in December 2025 (see full year).

Return flights

17 Dec - 20 Jan	ITA Airways
17 Dec - 19 Jan	ITA Airways
22 Dec - 22 Jan	ITA Airways
23 Dec - 07 Jan	ITA Airways
31 Dec - 11 Jan	ITA Airways
14 Dec - 06 Jan	Azul Airlines
16 Dec - 09 Jan	Azul Airlines
08 Dec - 24 Dec	Azul Airlines
16 Dec - 26 Dec	Azul Airlines
25 Dec - 15 Jan	ITA Airways
23 Dec - 30 Dec	LATAM Airlines Group
23 Dec - 03 Jan	Azul Airlines
25 Dec - 08 Jan	Azul Airlines
19 Dec - 26 Dec	Azul Airlines
14 Dec - 23 Dec	LATAM Airlines Group
13 Dec - 15 Dec	Azul Airlines

Also check the deals for one-way flights from Rio De Janeiro 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 Rio De Janeiro to London in December from $1076

Return flights