AirHint found the following cheapest one-way flights from Istanbul (SAW) to Athens (ATH) in September 2025 (see full year).

One-Way flights

19 Sep	Pegasus Airlines	direct
22 Sep	Pegasus Airlines	direct
28 Sep	Pegasus Airlines	direct
29 Sep	Pegasus Airlines	direct
15 Sep	Pegasus Airlines	direct
26 Sep	Pegasus Airlines	direct
16 Sep	Pegasus Airlines	direct
30 Sep	Pegasus Airlines	direct
11 Sep	Pegasus Airlines	direct
17 Sep	Pegasus Airlines	direct

Also check the deals for return flights from Istanbul to Athens in September.

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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Cheapest one-way flights from Istanbul to Athens in September from 44€

One-Way flights