AirHint found the following cheapest return flights from London (LON) to Buenos Aires (AEP) in January 2026 (see full year).

Return flights

27 Jan - 11 Feb	Avianca
27 Jan - 17 Feb	Avianca
27 Jan - 16 Feb	Avianca
27 Jan - 05 Feb	Air Europa
28 Jan - 12 Feb	Avianca
27 Jan - 09 Feb	Avianca
27 Jan - 28 Feb	Avianca
24 Jan - 08 Feb	Ryanair
27 Jan - 08 Feb	Vueling Airlines
26 Jan - 15 Feb	LATAM Airlines Group
17 Jan - 29 Jan	Norse Atlantic Airways (UK)
21 Jan - 28 Jan	Avianca
19 Jan - 29 Jan	Ryanair
17 Jan - 26 Jan	Norse Atlantic Airways (UK)
19 Jan - 30 Jan	Ryanair
20 Jan - 27 Jan	Ryanair
16 Jan - 23 Jan	TAP
16 Jan - 26 Jan	Norse Atlantic Airways (UK)
12 Jan - 26 Jan	Norse Atlantic Airways (UK)
23 Jan - 30 Jan	Ryanair

Also check the deals for one-way flights from London to Buenos Aires in January.

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 London to Buenos Aires in January from 845€

Return flights