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

Return flights

12 Dec - 20 Jan	Aerolineas Argentinas
01 Dec - 01 Jan	GOL Linhas Aéreas
23 Dec - 13 Jan	JetSmart
16 Dec - 30 Dec	GOL Linhas Aéreas
11 Dec - 12 Jan	GOL Linhas Aéreas
06 Dec - 12 Jan	LATAM Airlines Group
06 Dec - 26 Dec	Avianca
07 Dec - 23 Dec	Avianca
05 Dec - 23 Dec	Avianca
12 Dec - 11 Jan	Avianca
13 Dec - 05 Jan	Avianca
18 Dec - 08 Jan	Avianca
24 Dec - 07 Jan	Avianca
10 Dec - 04 Jan	LATAM Airlines Group
06 Dec - 07 Dec	LATAM Airlines Group
11 Dec - 30 Dec	Avianca
21 Dec - 31 Dec	Avianca
22 Dec - 31 Dec	Avianca
04 Dec - 23 Dec	Avianca
13 Dec - 30 Dec	Avianca

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 1067€

Return flights