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

Return flights

20 Jan - 04 Feb	Ryanair
21 Jan - 04 Feb	Ryanair
18 Jan - 02 Feb	Ryanair
27 Jan - 10 Feb	Lufthansa
19 Jan - 06 Feb	Wizz Air Malta
29 Jan - 10 Feb	Air Canada
22 Jan - 04 Feb	Ryanair
23 Jan - 08 Feb	Lufthansa
26 Jan - 06 Feb	LATAM Airlines Group
22 Jan - 29 Jan	Air Canada
16 Jan - 03 Feb	Air Canada
15 Jan - 29 Jan	Air Canada
26 Jan - 31 Jan	TAP
22 Jan - 26 Jan	Ryanair
16 Jan - 22 Jan	Air Canada
19 Jan - 29 Jan	Ryanair
19 Jan - 26 Jan	Ryanair
22 Jan - 27 Jan	Ryanair
14 Jan - 26 Jan	Ryanair
15 Jan - 28 Jan	Air Canada

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 966€

Return flights