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

Return flights

29 Sep - 07 Oct	Ryanair
22 Sep - 03 Oct	Ryanair
28 Sep - 02 Oct	Ryanair
28 Sep - 09 Oct	Ryanair
28 Sep - 03 Oct	Ryanair
29 Sep - 13 Oct	Ryanair	direct
28 Sep - 04 Oct	Ryanair
29 Sep - 01 Oct	Ryanair
29 Sep - 10 Oct	Ryanair
28 Sep - 13 Oct	Ryanair	direct
26 Sep - 30 Sep	Ryanair
21 Sep - 26 Sep	Ryanair
22 Sep - 30 Sep	Ryanair
22 Sep - 29 Sep	Ryanair
22 Sep - 26 Sep	Ryanair
22 Sep - 24 Sep	Ryanair
25 Sep - 26 Sep	Ryanair
21 Sep - 29 Sep	Ryanair
26 Sep - 29 Sep	Ryanair
27 Sep - 30 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 $107

Return flights