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

Return flights

30 Sep - 07 Oct	Ryanair
30 Sep - 01 Oct	Ryanair
16 Sep - 24 Sep	Ryanair
22 Sep - 25 Sep	Aer Lingus
24 Sep - 25 Sep	easyJet
25 Sep - 29 Sep	easyJet
30 Sep - 30 Sep	transavia
22 Sep - 03 Oct	Ryanair
30 Sep - 07 Oct	KLM	direct
28 Sep - 03 Oct	KLM	direct
28 Sep - 30 Sep	easyJet
19 Sep - 31 Oct	easyJet
26 Sep - 28 Sep	KLM	direct
28 Sep - 29 Sep	easyJet
17 Sep - 02 Oct	easyJet
25 Sep - 29 Sep	KLM	direct
16 Sep - 20 Sep	Ryanair
22 Sep - 03 Oct	KLM	direct
19 Sep - 31 Oct	KLM	direct
30 Sep - 01 Oct	KLM	direct

Also check the deals for one-way flights from Amsterdam 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 Amsterdam to Brussels in September from 159€

Return flights