Does anyone know if an app (or even a website) exists where you can search for flight or travel deals by putting in a specific date range rather than your destination? For instance, if I want to fly out of Newark airport this Saturday, May 9th, I could find out the cheapest domestic one-way flights that are leaving from this particular airport or city on this day. I always thought this would be a cool way to search for travel deals, especially for people who know they have a few days off and are open to taking a trip anywhere if it's within their budget. Does this kind of search exist?