[slick]

Gathered a list together which i'll make into a sticky as these always come in handy.
Feel free to add any more.
http://www.bmibaby.com/bmibaby/en/index.aspx

http://www.easyjet.com/splash.asp

http://www2.flybe.com/

http://www.flyglobespan.com/index.asp

http://www.gbairways.com/

http://www.jet2.com/homepage.aspx?lang=EN

http://www.ryanair.com/site/EN/

http://www.thomsonfly.com/en/index.html

http://www.skyscanner.net/

http://wizzair.com/index.shtml

http://www.avro.co.uk/

http://www.cheapflights.co.uk/

http://www.moneysavingexpert.com/flightchecker/

http://www.travelzoo.co.uk/

http://www.sunbargains.com/

http://www.teletextholidays.com/

http://www.lastminute.com/