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

Return flights

08 Sep - 15 Sep	Ryanair
30 Sep - 07 Oct	Ryanair
10 Sep - 12 Sep	Ryanair
30 Sep - 08 Oct	Ryanair
15 Sep - 18 Sep	Ryanair
30 Sep - 04 Oct	Ryanair
30 Sep - 05 Oct	Ryanair
30 Sep - 06 Oct	Ryanair
08 Sep - 10 Sep	Ryanair
05 Sep - 07 Sep	Ryanair
12 Sep - 17 Sep	Ryanair
12 Sep - 15 Sep	Ryanair
17 Sep - 22 Sep	British Airways
02 Sep - 03 Sep	British Airways
26 Sep - 29 Sep	KLM

Also check the deals for one-way flights from Newcastle 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 Newcastle to Brussels in September from 112€

Return flights