AirHint found the following cheapest one-way flights from Porto (OPO) to Istanbul (IST) in August 2025 (see full year).
One-Way flights
| 27 Aug | Air Europa | ||
| 29 Aug | Norwegian | ||
| 31 Aug | Ryanair | ||
| 25 Aug | Ryanair | ||
| 30 Aug | Ryanair | ||
| 28 Aug | Vueling Airlines | ||
| 21 Aug | TAP | ||
| 19 Aug | Air Europa | ||
| 18 Aug | Air Europa | ||
| 22 Aug | Ryanair |
Also check the deals for return flights from Porto to Istanbul in August.
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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