AirHint found the following cheapest one-way flights from Keffallinia (EFL) to Istanbul (IST) in August 2025 (see full year).
One-Way flights
| 08 Aug | Aegean Airlines | ||
| 06 Aug | Aegean Airlines | ||
| 07 Aug | Aegean Airlines | ||
| 15 Aug | Ryanair | ||
| 31 Aug | SKY express | ||
| 17 Aug | SKY express |
Also check the deals for return flights from Keffallinia 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.
Find us on social media