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

Return flights

18 May - 22 May	Aegean Airlines	direct
04 May - 08 May	Aegean Airlines	direct
01 May - 04 May	Aegean Airlines	direct
25 May - 28 May	Aegean Airlines
20 May - 24 May	Aegean Airlines
07 May - 10 May	Air Serbia
01 May - 03 May	Air Serbia
07 May - 10 May	Turkish Airlines	direct
12 May - 17 May	Turkish Airlines	direct
01 May - 03 May	Aegean 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 117€

Return flights