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

Return flights

18 Oct - 20 Oct	Aegean Airlines
14 Oct - 21 Oct	Aegean Airlines
15 Oct - 20 Oct	Wizz Air
14 Oct - 22 Oct	Aegean Airlines
21 Oct - 24 Oct	Aegean Airlines
10 Oct - 14 Oct	Wizz Air
08 Oct - 10 Oct	Wizz Air
14 Oct - 16 Oct	Aegean Airlines
07 Oct - 09 Oct	Aegean Airlines
31 Oct - 02 Nov	Aegean Airlines
27 Oct - 06 Nov	Wizz Air
04 Oct - 09 Oct	Ryanair
28 Oct - 09 Nov	Aegean Airlines
28 Oct - 01 Nov	Aegean Airlines
26 Oct - 02 Nov	Aegean Airlines
28 Oct - 04 Nov	Aegean Airlines
26 Oct - 01 Nov	Aegean Airlines
30 Oct - 04 Nov	Aegean Airlines
30 Oct - 05 Nov	Aegean Airlines
27 Oct - 06 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 $167

Return flights