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

Return flights

30 Sep - 05 Oct	Wizz Air Malta
23 Sep - 30 Sep	Wizz Air Malta
30 Sep - 06 Oct	Wizz Air Malta
25 Sep - 08 Oct	Wizz Air Malta
23 Sep - 27 Sep	Wizz Air Malta
23 Sep - 29 Sep	Wizz Air Malta
23 Sep - 28 Sep	Wizz Air Malta
30 Sep - 01 Oct	Wizz Air Malta
24 Sep - 01 Oct	Wizz Air
24 Sep - 30 Sep	Wizz Air
24 Sep - 27 Sep	Wizz Air
24 Sep - 28 Sep	Wizz Air
24 Sep - 29 Sep	Wizz Air Malta
25 Sep - 29 Sep	Wizz Air
23 Sep - 24 Sep	Wizz Air Malta
25 Sep - 01 Oct	Wizz Air
23 Sep - 03 Oct	Wizz Air
30 Sep - 02 Oct	Wizz Air Malta
30 Sep - 06 Oct	Ryanair	direct
29 Sep - 06 Oct	Ryanair

Also check the deals for one-way flights from Athens to Brussels 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 Athens to Brussels in September from $124

Return flights