What it does: Searches for and compares low-cost carriers to help you find the lowest fare,
as well as reveals whole-year price trends.
What's hot: Plug in your destination and travel dates, and up pop two graphs: one charting prices within a certain number of days of your departure date; the other, prices for your return. Click on the peaks and valleys to see the various travel dates and their corresponding prices. Then scroll down to find specific flights. There's a filter bar that opens and closes on the left side of your screen if you want specifics about destinations, stopovers, duration, and more. I found routes and prices I would never have known about had I used my usual search methods.