AirHint found the following cheapest one-way flights from Istanbul (IST) to Porto (OPO) in May 2026 (see full year).
One-Way flights
| 14 May | Air Europa | ||
| 12 May | Vueling Airlines | ||
| 19 May | Vueling Airlines | ||
| 24 May | Vueling Airlines | ||
| 11 May | Vueling Airlines | ||
| 21 May | Vueling Airlines | ||
| 14 May | Turkish Airlines | direct | |
| 23 May | Vueling Airlines |
Also check the deals for return flights from Istanbul to Porto in May.
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.
Find us on social media