Originally Posted by gleff

Search European lowfare carriers
http://www.applefares.com

Great Circle Mapper
http://gc.kls2.com/

ITA Software Trip Planner (i.e. backend of Orbitz)
http://matrix.itasoftware.com/cvg/dispatch/

Digital City's Daily Deals (this link for DC)
http://www.digitalcity.com/washington/travel/deals.adp

Smarterliving Airfare Deals (this link for DC)
http://www.smarterliving.com/air/sea...tes.php?id=222

Sidestep
http://www.sidestep.com

Travelocity's Dream Maps (change BWI in link to your home airport)
http://dps1.travelocity.com/dreamMap...p_arp_name=BWI

Expedia Airline Fare List
http://www.expedia.com/pub/agent.dll?qscr=fpfl

Expedia Fare Compare
http://www.expedia.com/pub/agent.dll?qscr=cmpf