Cheapest one-way flights from London to Brussels in September from $134

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

One-Way flights

16 Sep Lufthansa
24 Sep Lufthansa
04 Sep Lufthansa
18 Sep Lufthansa
01 Sep Lufthansa
15 Sep Lufthansa
02 Sep Lufthansa
23 Sep Lufthansa
03 Sep Lufthansa
05 Sep Lufthansa

Also check the deals for return 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.

Book a cheap hotel in Brussels

Cheap car rent in Brussels

Feel free to contact us with any feedback or request another flight research.