AirHint found the following cheapest one-way flights from Athens (ATH) to Istanbul (IST) in January 2026 (see full year).

One-Way flights

25 Jan	Aegean Airlines	direct
18 Jan	Aegean Airlines	direct
30 Jan	Aegean Airlines	direct
12 Jan	Aegean Airlines	direct
23 Jan	Aegean Airlines	direct
27 Jan	Aegean Airlines	direct
28 Jan	Aegean Airlines	direct
19 Jan	Aegean Airlines	direct
08 Jan	Aegean Airlines	direct
22 Jan	Aegean Airlines	direct

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

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 Athens to Istanbul in January from 40€

One-Way flights