The idea is very much the same behind Travelocity and Orbitz: type when you are planning to fly, your point of departure and destination, and just as easy get the cheapest deals on earth. You can also purchase packages and get special discounts on car and hotel fares, but you are unlikely to get hold of one of those unless you are an early bird and book your trip with reasonable advance, as these services are most frequently used by people who, out of the blue need to fly from one point of the other of the country or the globe on short notice.
But the very same fact that that is its target audience should ring some bell: if it serves their purpose, they should meet everyone’s, and they do, if you know how to find what you are looking for, as it is quite easy to get carried of dates and budgets. 
