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

Return flights

17 Sep - 20 Sep	Wizz Air UK
20 Sep - 23 Sep	Wizz Air UK
18 Sep - 23 Sep	Wizz Air UK
13 Sep - 16 Sep	Wizz Air Malta
23 Sep - 25 Sep	Wizz Air UK
24 Sep - 30 Sep	Wizz Air UK
06 Sep - 09 Sep	Wizz Air UK
18 Sep - 20 Sep	Wizz Air UK
16 Sep - 21 Sep	Wizz Air UK
29 Sep - 02 Oct	Wizz Air UK
16 Sep - 18 Sep	Wizz Air UK
26 Sep - 03 Oct	Wizz Air UK
26 Sep - 05 Oct	Wizz Air
30 Sep - 01 Oct	Vueling Airlines
30 Sep - 02 Oct	Ryanair
29 Sep - 06 Oct	easyJet
29 Sep - 01 Oct	Ryanair
29 Sep - 03 Oct	Wizz Air UK
25 Sep - 01 Oct	Wizz Air Malta
29 Sep - 12 Oct	Vueling Airlines

Also check the deals for one-way flights from London 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 London to Brussels in September from 92€

Return flights