Flights from London to Belfast

You want to get on a cheap flight from London to Belfast (Northern Ireland). The way to make sure that you get on the cheapest flight is to:

type your flight details into the search engine on the left and see what airfare it spits out
check the airfare of every airline flying your route

Airlines	Airports	Stops
Air Berlin	London Stansted to Belfast (BFS)	non-stop
Air France UK	London City to Belfast City (BHD)	non-stop (1h30mm)
bmi	London Heathrow to Belfast City (BHD)	non-stop (1h15m)
easyJet	London Stansted to Belfast (BFS)	non-stop
Lufthansa	London Heathrow to Belfast City (BHD)	non-stop (1h20m)
Austrian Airlines in partnership	London to Belfast (BFS)	various