Cheapest one-way flights from Porto to Istanbul in September from $107

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

AirHint found the following cheapest one-way flights from Porto (OPO) to Istanbul (IST) in September 2025 (see full year).

One-Way flights

22 Sep Ryanair
23 Sep Ryanair
09 Sep Vueling Airlines
13 Sep Vueling Airlines
03 Sep Vueling Airlines
13 Sep Turkish Airlines direct
17 Sep Vueling Airlines
23 Sep Turkish Airlines direct
09 Sep Turkish Airlines direct

Also check the deals for return 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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