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

Return flights

05 Dec - 28 Jan	GOL Linhas Aéreas
15 Dec - 10 Jan	Flybondi
15 Dec - 09 Jan	Flybondi
17 Dec - 29 Dec	JetSmart
16 Dec - 10 Jan	Flybondi
14 Dec - 30 Dec	Aerolíneas Argentinas
13 Dec - 30 Dec	Aerolíneas Argentinas
14 Dec - 31 Dec	Aerolíneas Argentinas
03 Dec - 10 Dec	Aerolíneas Argentinas
10 Dec - 27 Dec	LATAM Airlines Group
23 Dec - 09 Jan	Flybondi
22 Dec - 09 Jan	JetSmart
05 Dec - 12 Dec	LATAM Airlines Group
22 Dec - 23 Jan	JetSmart
22 Dec - 28 Jan	JetSmart
15 Dec - 30 Dec	Aerolíneas Argentinas
22 Dec - 24 Jan	JetSmart
22 Dec - 26 Jan	JetSmart
05 Dec - 23 Dec	GOL Linhas Aéreas
07 Dec - 23 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 953€

Return flights