Cheapest return flights from London to Brussels in September from 109€

Best time to book flights for London (LHR) to Brussels (BRU) flights at AirHint

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

Return flights

25 Sep - 30 Sep British Airways direct
07 Sep - 11 Sep British Airways direct
11 Sep - 11 Sep British Airways direct
11 Sep - 14 Sep British Airways direct
08 Sep - 09 Sep British Airways direct
11 Sep - 15 Sep British Airways direct
18 Sep - 22 Sep British Airways direct
25 Sep - 28 Sep British Airways direct
20 Sep - 21 Sep British Airways direct
03 Sep - 07 Sep British Airways direct

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

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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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