How to find cheap travel by price, not by destination?

Does anyone know a website where I can search travel to multiple locations (i.e. anywhere in the Caribbean) and find the cheapest prices. Most websites you have to pick a destination before hand than search the different airports. Was wondering if anyone cam across one that would just let me search prices. Thanks

Enjoy Your Vacation at a Cheaper Price with a Cheap Travel Package

Want to go in for a dream vacation with your family, and the problem is shortage of funds? Well, now there is a solution to your problem, thanks to the availability of a cheap travel package, designed specially according to your needs, that is available with almost every travel agency or tour planning company. A [...]