Cheapest return flights from Porto to Istanbul in December from $244

Best time to book flights for Porto (OPO) to Istanbul (IST) flights at AirHint

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

Return flights

06 Dec - 08 Dec Air France
05 Dec - 08 Dec Ryanair
03 Dec - 10 Dec Air France
26 Dec - 31 Dec Air Serbia
31 Dec - 04 Jan Air Europa
27 Dec - 04 Jan Vueling Airlines
26 Dec - 02 Jan Air Serbia
06 Dec - 08 Dec Turkish Airlines direct
03 Dec - 10 Dec Turkish Airlines direct
26 Dec - 02 Jan Turkish Airlines direct
05 Dec - 08 Dec Turkish Airlines direct

Also check the deals for one-way flights from Porto to Istanbul 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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