Alternative Airfare websites

While perusing travel sites, wejustgotback.com had an article on searching alternative airfare websites. For those with extra time, sometimes it pays to look at the following sites:

For travel in the U.S.:

http://www.kayak.com
http://www.farechase.com
http://www.smartfares.com
http://www.farecompare.com

For travel outside the U.S.:

http://www.mobissimo.com
http://www.flycheapabroad.com

Supposedly, the following sites keep an eye on travel deals. Might be best to use a spam email account just in case:

http://www.travelzoo.com
http://www.shermanstravel.com
http://www.bookingbuddy.com

Some frequent flyers have posted their travel notes here:

http://www.seatguru.com
Think your row and seat number is comfortable?

http://www.flightstats.com
Listing the fastest security lines at some of America's busiest terminals.

http://www.longtermparking.com
If you thought the lots at Denver International were a long way from the passenger terminals, there are others with even longer commutes.