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

Return flights

29 Sep - 04 Oct	Ryanair
29 Sep - 03 Oct	Ryanair
12 Sep - 30 Oct	Ryanair
09 Sep - 12 Sep	Ryanair
29 Sep - 06 Oct	Ryanair
15 Sep - 19 Sep	Ryanair	direct
12 Sep - 19 Sep	Ryanair	direct
15 Sep - 26 Sep	Ryanair
29 Sep - 06 Oct	Ryanair	direct
12 Sep - 26 Sep	Ryanair
16 Sep - 04 Oct	Ryanair
13 Sep - 15 Sep	Ryanair
26 Sep - 09 Oct	Ryanair
13 Sep - 26 Sep	Ryanair
29 Sep - 02 Oct	Ryanair
06 Sep - 12 Sep	Ryanair
26 Sep - 01 Oct	Ryanair
15 Sep - 17 Sep	Ryanair
10 Sep - 15 Sep	Ryanair
20 Sep - 01 Oct	Ryanair

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 $139

Return flights