Cheapest return flights from Istanbul to Porto in September from $285

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 September 2025 (see full year).

Return flights

16 Sep - 20 Sep Pegasus Airlines
17 Sep - 22 Sep Pegasus Airlines
11 Sep - 18 Sep Pegasus Airlines
07 Sep - 17 Sep Transavia France
09 Sep - 30 Sep Pegasus Airlines
03 Sep - 12 Sep Pegasus Airlines
16 Sep - 19 Sep Vueling Airlines
16 Sep - 24 Sep Vueling Airlines
17 Sep - 19 Sep Vueling Airlines
24 Sep - 26 Sep Vueling Airlines
26 Sep - 14 Oct Vueling Airlines
26 Sep - 03 Oct Vueling Airlines
24 Sep - 14 Oct Vueling Airlines
30 Sep - 21 Oct Vueling Airlines
24 Sep - 03 Oct Vueling Airlines
26 Sep - 15 Oct Vueling Airlines
30 Sep - 14 Oct Vueling Airlines
30 Sep - 20 Oct Vueling Airlines
16 Sep - 03 Oct Vueling Airlines
30 Sep - 03 Oct Vueling Airlines

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

Skyscanner

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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