Air-Fare.Com is the Internet’s most complete listing of fare cuts and daily air fares.
Unlike “Internet Only” fares, these are regularly published airfares available from any travel agent or airline ticket counter. Not only will you find the lowest fares published each business day among the top 50 metro airports in the U.S. and Canada, buy you will also find lot more. Airlines closely monitor each other’s fares and are quick to react anytime another airline introduces a low fare to poach on its “cash cow” routes. The usual technique is to plop a low fare into the middle of a “cash cow” route of the offending airline. You can learn more about this short-term fare cuts, and airfare goofs, and more at the homepage. At the bottom of the homepage you will be able to click on a city name to find your air fare. You will find some categories to browse the website that includes The Cities, Big Fare Cuts, Travel Links, and Bargains and Great Deals. 
