Hipmunk: “Most flight search sites haven’t changed in years. They have an intimidating search page and endless pages of flight results. Finding the right flight often takes all afternoon—or all week. At Hipmunk, we make your experience a lot better. We’re building better interfaces for searching, browsing, and filtering your flight search results.” Users may sort information according to the following: Agony (Agony is a combination of price, duration and number of stops), Price, Stops, Departure Time, Arrival Time, Duration.