BRITISH AIRWAYS seems to be flying up to 5 times a day from London Heathrow
(LHR) to Brussels airport
(BRU) in June 2009 with an Airbus A319
. They offer at least 2 daily flights. Flighttime: 1 hour 10 minutes.flighttime: 1 hour 10 minutes
On top of those flights with their own A319, British Airways has a codeshare on the flights by Brussels Airlines.
Brussels Airlines only seems to be operating it's own metal from London Gatwick (LGW) to Brussels airport (BRU) in June 2009. There seem to be only 5 flights a week. They fly the Boeing 737-400 and the Avro RJ.