Fly often? Want to take a month off and crisscross the country but can’t afford the airfare? Or maybe you want to visit family and friends in New York every weekend?

JetBlue is advertising a one-month All-You-Can-Jet-Pass for $599. The pass must be purchased by Friday, Aug. 21.

As always, the pass comes with a few restrictions:

• Once you have the pass, you’ll have access to every available seat on every flight, and you can book travel or make changes up to three days before departure.
• The pass includes fees and taxes for domestic flights; taxes and fees for Puerto Rico and international flights are not included.
• To purchase the pass, you must become a TrueBlue member. You have to call to purchase passes and book your flights (1-800-538-2583), but the airline won’t charge its customary $15 fee for phone bookings.

Visit JetBlue online for details.