Cheapest return flights from Porto to Buenos Aires in December from $753

Best time to book flights for Porto (OPO) to Buenos Aires (AEP) flights at AirHint

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

Return flights

01 Dec - 14 Dec LATAM Airlines Group
01 Dec - 28 Dec LATAM Airlines Group
01 Dec - 30 Dec LATAM Airlines Group
01 Dec - 07 Jan LATAM Airlines Group
24 Dec - 14 Jan LATAM Airlines Group
26 Dec - 13 Jan LATAM Airlines Group
15 Dec - 22 Dec LATAM Airlines Group
20 Dec - 10 Jan TAP
06 Dec - 30 Dec LATAM Airlines Group
06 Dec - 29 Dec LATAM Airlines Group
18 Dec - 10 Jan TAP
20 Dec - 03 Jan TAP
18 Dec - 04 Jan TAP
11 Dec - 27 Dec SWISS

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

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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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