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

Return flights

22 Sep - 12 Oct	Ryanair	direct
29 Sep - 12 Oct	Ryanair	direct
26 Sep - 12 Oct	Ryanair	direct
28 Sep - 12 Oct	Ryanair	direct
22 Sep - 09 Oct	Ryanair
12 Sep - 16 Sep	Ryanair	direct
22 Sep - 07 Oct	Ryanair
22 Sep - 10 Oct	Ryanair
22 Sep - 08 Oct	Ryanair
22 Sep - 03 Oct	Ryanair	direct
22 Sep - 11 Oct	Ryanair
15 Sep - 18 Sep	Ryanair
15 Sep - 25 Sep	Ryanair
09 Sep - 16 Sep	Wizz Air
26 Sep - 28 Sep	Ryanair
15 Sep - 19 Sep	Ryanair	direct
14 Sep - 19 Sep	Ryanair	direct
12 Sep - 19 Sep	Ryanair	direct
08 Sep - 11 Sep	Ryanair
12 Sep - 20 Sep	Ryanair

Also check the deals for one-way flights from Brussels 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 Brussels to Thessaloniki in September from 66€

Return flights