Only way to find cheap fares is to start looking for them. Search for flights on Tuesday or Wednesday to find the cheapest fares. Try various sites like farecompare, expedia, usairways etc and start putting in places that you might like to visit. I'm assuming you want to do this fairly quickly and do not want to wait until a particular fare price comes up for a particular city. A little bit of work will find you a price you are willing to pay.