I know that a lot of these websites that claim to have cheap air fares are the same as each other but I found a great site called SideStep that actually has cheap flights! I did my test again where I type in a cross-country flight with short notice and I was given exceptional results. I was given a list of low cost air fares for a flight from Phoenix to Chicago which leaves in 3 weeks. My results included cheap air fares for non-stop flights as low as 279 dollars. I found those prices to be sufficient and I think most people would agree. SideStep is another one that should be added to the books! For more information visit sidestep.com.