If you're in need of finding flights, it's worth taking a look at Skycanner. Reasonably quick, up to date and it works. It does tend to be slightly literal though - I asked for a flight from Southend to Belfast City, and it found me a couple, but they went via Amsterdam. However to be fair, it did just what I asked for, and once I looked around the screen there was a suggestion that I should go to Belfast International, both quicker and a lot cheaper.
I usually either look at a particular airport for flights or go to a specific carrier, but I will be trying this out when I'm travelling in the future.