Cheapest return flights from London to Brussels in September from $115

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

Return flights

22 Sep - 23 Sep British Airways
10 Sep - 13 Sep British Airways direct
22 Sep - 26 Sep British Airways direct
01 Sep - 02 Sep British Airways direct
01 Sep - 08 Sep British Airways direct
08 Sep - 18 Sep British Airways direct
22 Sep - 23 Sep British Airways direct
11 Sep - 18 Sep British Airways direct
06 Sep - 08 Sep British Airways direct
26 Sep - 30 Sep British Airways direct
30 Sep - 01 Oct British Airways direct
28 Sep - 02 Oct British Airways direct

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

Skyscanner

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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