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

Return flights

09 Mar - 17 Mar	Iberia
11 Mar - 25 Mar	Air Europa
13 Mar - 25 Mar	Air Europa
06 Mar - 21 Mar	Iberia
04 Mar - 18 Mar	Iberia
11 Mar - 24 Mar	Air Europa
16 Mar - 24 Mar	Air Europa
11 Mar - 19 Mar	Air Europa
16 Mar - 26 Mar	LATAM Airlines Group
05 Mar - 19 Mar	Ethiopian Airlines
18 Mar - 17 Apr	Iberia
24 Mar - 08 Apr	Ryanair
19 Mar - 04 Apr	Iberia
24 Mar - 15 Apr	Ryanair
16 Mar - 10 Apr	TAP
28 Mar - 05 Apr	TAP
27 Mar - 11 Apr	TAP

Also check the deals for one-way flights from Porto to Buenos Aires in March.

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 March from 798€

Return flights