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

Return flights

09 Dec - 19 Jan	LATAM Airlines Group
09 Dec - 29 Dec	LATAM Airlines Group
10 Dec - 24 Dec	GOL Linhas Aéreas
05 Dec - 23 Dec	GOL Linhas Aéreas
08 Dec - 24 Dec	GOL Linhas Aéreas
17 Dec - 29 Dec	LATAM Airlines Group
04 Dec - 11 Dec	GOL Linhas Aéreas
14 Dec - 02 Jan	Flybondi
13 Dec - 10 Jan	LATAM Airlines Group
01 Dec - 11 Dec	GOL Linhas Aéreas
21 Dec - 21 Jan	Aerolíneas Argentinas
22 Dec - 29 Dec	Aerolíneas Argentinas
24 Dec - 24 Jan	GOL Linhas Aéreas
22 Dec - 22 Jan	Flybondi
21 Dec - 02 Jan	JetSmart
24 Dec - 01 Jan	LATAM Airlines Group
16 Dec - 02 Jan	Aerolíneas Argentinas
07 Dec - 21 Dec	Aerolíneas Argentinas
25 Dec - 06 Jan	Aerolíneas Argentinas
05 Dec - 18 Dec	GOL Linhas Aéreas

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 $1383

Return flights