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

Return flights

19 Jan - 26 Jan	LATAM Airlines Group
19 Jan - 09 Feb	Azul Airlines
15 Jan - 29 Jan	Air Europa
14 Jan - 31 Jan	Vueling Airlines
19 Jan - 17 Feb	Azul Airlines
15 Jan - 22 Jan	Air Europa
01 Jan - 15 Jan	Air Europa
03 Jan - 20 Jan	Vueling Airlines
02 Jan - 16 Jan	Ryanair
18 Jan - 30 Jan	Vueling Airlines

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 989€

Return flights