If you fly JetBlue and have a lot of time on your hands this September...

JetBlue announced yesterday that it is offering a special $599 pass for unlimited domestic flights between Sept. 8 and Oct. 8.

Pass holders will be able to choose from 56 cities to fly to/from. The pass must be purchased by August 21 and flights must be purchased at least three days before date of departure.

So if you've got some extra time on your hands, live near a airport from which JetBlue departs and have some disposable income for the pass and any hotel stays you might need, this is the deal for you.

Keep in mind, JetBlue flights for that time period can vary from fairly inexpensive to moderate, so you might need to travel two to four times roundtrip for the cost to really pay off!

But considering that JetBlue flies to Las Vegas, Ft. Lauderdale, Los Angeles, Fort Myers, Martha's Vineyard and other great weekend getaway spots, this pass could make the month of September a month to remember!