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

Return flights

03 Dec - 08 Dec	JetSmart
10 Dec - 31 Jan	GOL Linhas Aéreas
01 Dec - 30 Dec	JetSmart
24 Dec - 31 Jan	LATAM Airlines Group
11 Dec - 31 Dec	JetSmart
03 Dec - 09 Dec	GOL Linhas Aéreas
24 Dec - 24 Jan	JetSmart
13 Dec - 28 Dec	JetSmart
23 Dec - 31 Jan	Sky Airline
24 Dec - 18 Jan	LATAM Airlines Group
24 Dec - 17 Jan	LATAM Airlines Group
02 Dec - 15 Jan	LATAM Airlines Group
15 Dec - 12 Jan	GOL Linhas Aéreas
13 Dec - 10 Jan	GOL Linhas Aéreas
10 Dec - 30 Dec	LATAM Airlines Group
21 Dec - 21 Jan	LATAM Airlines Group
07 Dec - 26 Dec	Air Canada
17 Dec - 28 Dec	Aerolineas Argentinas
03 Dec - 14 Dec	JetSmart
01 Dec - 29 Dec	LATAM Airlines Group

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 931€

Return flights