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

Return flights

02 Jul - 02 Aug	Air Europa
19 Jul - 26 Jul	TAP
14 Jul - 29 Jul	LATAM Airlines Group
17 Jul - 24 Jul	LATAM Airlines Group
10 Jul - 17 Jul	Air Europa
14 Jul - 15 Jul	LATAM Airlines Group
17 Jul - 25 Jul	Ryanair
04 Jul - 11 Jul	Air Transat
16 Jul - 24 Jul	Ryanair
21 Jul - 29 Jul	TAP
10 Jul - 22 Jul	TAP
28 Jul - 17 Aug	TAP
28 Jul - 10 Aug	TAP
28 Jul - 11 Aug	TAP
28 Jul - 20 Aug	TAP
31 Jul - 21 Aug	TAP
11 Jul - 01 Aug	SWISS

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 1175€

Return flights