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

Return flights

18 Dec - 04 Jan	Flybondi
16 Dec - 29 Dec	Aerolineas Argentinas
26 Dec - 03 Jan	Sky Airline
11 Dec - 26 Dec	Avianca
09 Dec - 26 Dec	Avianca
15 Dec - 25 Dec	Avianca
19 Dec - 26 Dec	Avianca
15 Dec - 26 Dec	Avianca
27 Dec - 14 Jan	LATAM Airlines Group
17 Dec - 02 Jan	Avianca
02 Dec - 02 Jan	Avianca
11 Dec - 27 Dec	Avianca
10 Dec - 31 Dec	Avianca
14 Dec - 25 Dec	Avianca
07 Dec - 26 Dec	Avianca
24 Dec - 10 Jan	Avianca
26 Dec - 10 Jan	Aerolineas Argentinas
19 Dec - 02 Jan	Avianca
17 Dec - 20 Jan	Avianca
19 Dec - 01 Jan	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 $1331

Return flights