Cheapest return flights from London to Brussels in September from $233

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

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

Return flights

25 Sep - 01 Oct Lufthansa
04 Sep - 09 Sep SWISS
12 Sep - 14 Sep Lufthansa
20 Sep - 21 Sep SWISS

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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