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

Return flights

13 Jan - 24 Feb	Avianca
11 Jan - 11 Feb	Avianca
27 Jan - 04 Feb	TAP
27 Jan - 03 Feb	TAP
28 Jan - 25 Feb	Air Canada
24 Jan - 28 Feb	Ryanair
29 Jan - 16 Feb	LATAM Airlines Group
20 Jan - 27 Jan	LATAM Airlines Group
08 Jan - 07 Feb	Wizz Air UK
31 Jan - 14 Feb	LATAM Airlines Group
22 Jan - 01 Feb	LATAM Airlines Group
11 Jan - 21 Jan	LATAM Airlines Group
05 Jan - 26 Jan	Ryanair
01 Jan - 17 Jan	Wizz Air UK
03 Jan - 17 Jan	Wizz Air UK
05 Jan - 12 Jan	Ryanair
14 Jan - 21 Jan	Air Canada
11 Jan - 19 Jan	Air Canada
12 Jan - 19 Jan	Air Canada
05 Jan - 20 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 894€

Return flights