Cheapest return flights from London to Brussels in September from $138

AirHint found the following cheapest return flights from London (LHR) to Brussels (BRU) in September 2026 (see full year).

Return flights

13 Sep - 18 Sep British Airways direct
11 Sep - 14 Sep British Airways direct
08 Sep - 11 Sep British Airways direct
04 Sep - 07 Sep British Airways direct
28 Sep - 01 Oct British Airways direct
10 Sep - 25 Sep British Airways direct
19 Sep - 26 Sep British Airways direct
10 Sep - 21 Sep British Airways direct
10 Sep - 14 Sep British Airways direct
10 Sep - 13 Sep British Airways direct
02 Sep - 06 Sep Brussels Airlines 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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