AirHint found the following cheapest return flights from Porto (OPO) to Buenos Aires (EZE) in July 2025 (see full year).

Return flights

10 Jul - 17 Jul	Ethiopian Airlines
21 Jul - 29 Jul	Ethiopian Airlines
14 Jul - 29 Jul	Ethiopian Airlines
08 Jul - 14 Aug	Ethiopian Airlines
17 Jul - 24 Jul	Ethiopian Airlines
19 Jul - 26 Jul	Ethiopian Airlines
01 Jul - 15 Jul	KLM
02 Jul - 02 Aug	KLM
04 Jul - 11 Jul	Air France
17 Jul - 25 Jul	Air France
10 Jul - 13 Aug	KLM
16 Jul - 24 Jul	KLM
11 Jul - 01 Aug	KLM
14 Jul - 28 Jul	Ryanair

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

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 July from 934€

Return flights