Cheapest return flights from Porto to Istanbul in September from $228

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 September 2025 (see full year).

Return flights

16 Sep - 23 Sep easyJet
16 Sep - 24 Sep easyJet
18 Sep - 23 Sep easyJet
19 Sep - 25 Sep Transavia France
27 Sep - 05 Oct Transavia France
23 Sep - 28 Sep Transavia France
23 Sep - 27 Sep Transavia France
01 Sep - 14 Sep Transavia France
10 Sep - 17 Sep easyJet
01 Sep - 20 Sep Transavia France
25 Sep - 28 Sep easyJet
30 Sep - 04 Oct Transavia France
22 Sep - 04 Oct Transavia France
26 Sep - 09 Oct Vueling Airlines
26 Sep - 14 Oct Vueling Airlines
19 Sep - 08 Oct Vueling Airlines
19 Sep - 09 Oct Vueling Airlines
28 Sep - 08 Oct Vueling Airlines
26 Sep - 13 Oct Vueling Airlines
28 Sep - 09 Oct Vueling Airlines

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