There are not really any flying passes or anything like that which offer unlimited flights for a period of time. They do offer coupon ones, where you purchase a coupon for each flight you need, which may or may not be cheaper and easier than regular tickets.

Consider also the train for the East Coast, Boston, New York, Washington. It may or may not be less expensive than flying depending on your exact schedule, and will avoid the hassles of getting to and from the airport, etc.