AirHint found the following cheapest return flights from Warsaw (WAW) to Thessaloniki (SKG) in September 2025 (see full year).

Return flights

29 Sep - 17 Oct	Ryanair	direct
29 Sep - 10 Oct	Ryanair	direct
26 Sep - 10 Oct	Ryanair	direct
15 Sep - 01 Oct	Ryanair
29 Sep - 13 Oct	Ryanair	direct
26 Sep - 13 Oct	Ryanair	direct
26 Sep - 04 Oct	Ryanair
15 Sep - 23 Sep	Ryanair
15 Sep - 19 Sep	Ryanair
29 Sep - 20 Oct	Ryanair	direct
15 Sep - 03 Oct	Ryanair	direct
15 Sep - 06 Oct	Ryanair	direct
08 Sep - 12 Sep	Ryanair	direct
17 Sep - 20 Sep	Wizz Air
15 Sep - 22 Sep	Ryanair	direct
20 Sep - 24 Sep	Ryanair
24 Sep - 29 Sep	Wizz Air
24 Sep - 30 Sep	Wizz Air
25 Sep - 30 Sep	Wizz Air
24 Sep - 26 Sep	Wizz Air

Also check the deals for one-way flights from Warsaw to Thessaloniki in September.

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 Warsaw to Thessaloniki in September from $122

Return flights