AirHint found the following cheapest return flights from Thessaloniki (SKG) to Istanbul (IST) in May 2026 (see full year).

Return flights

09 May - 13 May	Aegean Airlines
21 May - 25 May	Aegean Airlines
15 May - 18 May	Aegean Airlines	direct
13 May - 16 May	Aegean Airlines
17 May - 20 May	Aegean Airlines
16 May - 19 May	Aegean Airlines
12 May - 15 May	Aegean Airlines
14 May - 17 May	Aegean Airlines
01 May - 04 May	Aegean Airlines	direct
28 May - 04 Jun	Aegean Airlines
12 May - 15 May	Turkish Airlines	direct
17 May - 06 Jun	SKY express
28 May - 04 Jun	Turkish Airlines	direct

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

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 May from $165

Return flights