If you’re travelling in the near future you really should take a look at Farecast.com. It’s a little bit like kayak.com in that it queries multiple other travel sites and presents a ajaxy interface to you to narrow your search down. Unique to farecast is their new Hotels search that is basically a web2.0 app with a mapping interface. Farecast also has a neat utility that can roughly tell you when to fly (in the next 30 days), so you can get the lowest fares. It’s free so give it a try and bookmark it now.