Cheapest return flights from Istanbul to Porto in December from $319

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

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

Return flights

17 Dec - 21 Dec Lufthansa
17 Dec - 24 Dec Lufthansa
17 Dec - 24 Dec Turkish Airlines direct
17 Dec - 21 Dec Turkish Airlines direct
29 Dec - 18 Jan Vueling Airlines
07 Dec - 24 Dec Vueling Airlines
07 Dec - 21 Dec Vueling Airlines
07 Dec - 23 Dec Vueling Airlines
01 Dec - 21 Dec Vueling Airlines
01 Dec - 07 Dec Vueling Airlines
12 Dec - 24 Dec Vueling Airlines
12 Dec - 01 Jan Vueling Airlines
17 Dec - 01 Jan Vueling Airlines
17 Dec - 07 Jan Vueling Airlines
29 Dec - 01 Jan Vueling Airlines
29 Dec - 07 Jan Vueling Airlines
22 Dec - 01 Jan Vueling Airlines
22 Dec - 07 Jan Vueling Airlines

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