Save Time Finding the Cheapest and Convenient Flights

Sites like expedia.com, priceline, orbit help you find the lowest prices.

However, you have to check them each to find the lowest prices.

The app Hipmunk saves you time and effort by combining all these results in their app.
It also displays the flight time in a graph that let's you visualize how convenient the flight(s) are,
including connection waiting time.