AirHint found the following cheapest return flights from Buenos Aires (EZE) to London (LHR) in December 2025 (see full year).

Return flights

18 Dec - 05 Jan	Iberia
09 Dec - 31 Dec	Iberia For Level
02 Dec - 02 Jan	Iberia For Level
17 Dec - 03 Jan	Iberia
17 Dec - 06 Jan	Iberia
18 Dec - 03 Jan	Iberia
02 Dec - 15 Dec	Iberia
18 Dec - 04 Jan	Iberia
17 Dec - 04 Jan	Iberia
17 Dec - 02 Jan	Iberia
18 Dec - 02 Jan	Iberia
05 Dec - 13 Jan	Air Canada
11 Dec - 30 Dec	Iberia For Level
10 Dec - 30 Dec	Iberia For Level
03 Dec - 22 Dec	Iberia
15 Dec - 31 Dec	Iberia
03 Dec - 21 Dec	Iberia
08 Dec - 27 Dec	United
12 Dec - 29 Dec	KLM
24 Dec - 31 Dec	Iberia

Also check the deals for one-way flights from Buenos Aires 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 Buenos Aires to London in December from $1122

Return flights