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

Return flights

26 Jan - 15 Feb	LATAM Airlines Group
26 Jan - 22 Feb	LATAM Airlines Group
22 Jan - 08 Feb	LATAM Airlines Group
24 Jan - 08 Feb	TAP
22 Jan - 19 Feb	LATAM Airlines Group
28 Jan - 18 Feb	TAP
22 Jan - 05 Feb	LATAM Airlines Group
20 Jan - 10 Feb	TAP
25 Jan - 16 Feb	TAP
19 Jan - 29 Jan	LATAM Airlines Group
26 Jan - 03 Feb	LATAM Airlines Group
14 Jan - 28 Jan	LATAM Airlines Group
15 Jan - 29 Jan	LATAM Airlines Group
23 Jan - 25 Jan	TAP
15 Jan - 22 Jan	LATAM Airlines Group
26 Jan - 30 Jan	TAP
16 Jan - 20 Jan	TAP
19 Jan - 25 Jan	TAP
18 Jan - 21 Jan	TAP
15 Jan - 20 Jan	Iberia

Also check the deals for one-way flights from Porto 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 Porto to Buenos Aires in January from $1051

Return flights