Cheapest return flights from Porto to Istanbul in December from $256

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

Return flights

07 Dec - 12 Dec easyJet
05 Dec - 08 Dec easyJet
11 Dec - 18 Dec Lufthansa
07 Dec - 13 Dec easyJet
06 Dec - 14 Dec Lufthansa
31 Dec - 04 Jan Air Europa
07 Dec - 08 Dec Vueling Airlines
26 Dec - 01 Jan Ryanair
07 Dec - 09 Dec Vueling Airlines
25 Dec - 30 Dec Iberia
11 Dec - 13 Dec Vueling Airlines
11 Dec - 12 Dec Vueling Airlines
26 Dec - 04 Jan Air Serbia
26 Dec - 06 Jan Lufthansa
26 Dec - 02 Jan Air Serbia
27 Dec - 02 Jan Lufthansa
27 Dec - 02 Jan Turkish Airlines direct
26 Dec - 06 Jan Turkish Airlines direct
26 Dec - 02 Jan Turkish Airlines direct
31 Dec - 19 Jan Vueling Airlines

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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