Cheapest return OPO–AEP flights, May

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

Return flights

27 May - 24 Jun easyJet
14 May - 26 May Ryanair
23 May - 08 Jun Ryanair
26 May - 03 Jun TAP
12 May - 25 May Iberia
23 May - 31 May Air Europa
12 May - 27 May SWISS
23 May - 30 May Air Europa
07 May - 14 May Azul Airlines
04 May - 12 May SWISS
16 May - 29 May SWISS
30 May - 31 May SWISS
30 May - 07 Jun SWISS

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

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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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