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

Return flights

21 Jan - 18 Feb	Avianca
27 Jan - 16 Feb	Avianca
19 Jan - 02 Feb	Ryanair
21 Jan - 27 Jan	Avianca
27 Jan - 09 Feb	Avianca
21 Jan - 28 Jan	Avianca
22 Jan - 08 Feb	easyJet
22 Jan - 19 Feb	Avianca
31 Jan - 22 Feb	Ryanair
20 Jan - 10 Feb	Ryanair
26 Jan - 15 Feb	Avianca
29 Jan - 08 Feb	TAP
16 Jan - 28 Jan	Norse Atlantic Airways (UK)
19 Jan - 26 Jan	Ryanair
21 Jan - 31 Jan	Ryanair
17 Jan - 31 Jan	Norse Atlantic Airways (UK)
16 Jan - 25 Jan	Norse Atlantic Airways (UK)
12 Jan - 28 Jan	Wizz Air UK
05 Jan - 26 Jan	Wizz Air UK
16 Jan - 30 Jan	Norse Atlantic Airways (UK)

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 826€

Return flights