AirHint found the following cheapest return flights from Thessaloniki (SKG) to Istanbul (IST) in October 2025 (see full year).

Return flights

17 Oct - 23 Oct	Wizz Air
15 Oct - 24 Oct	Wizz Air
27 Oct - 02 Nov	Aegean Airlines
04 Oct - 28 Nov	Air Serbia
15 Oct - 25 Oct	Wizz Air
26 Oct - 02 Nov	Aegean Airlines
28 Oct - 31 Oct	Aegean Airlines
24 Oct - 28 Oct	Aegean Airlines
23 Oct - 28 Oct	Aegean Airlines
09 Oct - 14 Oct	Aegean Airlines
25 Oct - 28 Oct	Aegean Airlines
08 Oct - 30 Oct	Aegean Airlines
09 Oct - 18 Oct	Aegean Airlines
04 Oct - 28 Nov	Turkish Airlines	direct
27 Oct - 02 Nov	Turkish Airlines	direct
26 Oct - 02 Nov	Turkish Airlines	direct

Also check the deals for one-way flights from Thessaloniki to Istanbul in October.

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 return flights from Thessaloniki to Istanbul in October from $190

Return flights