New JetBlue offer: Fly by June 15 get $50 off a flight this fall

JetBlue has a deal for you: fly them by June 15 (purchase your flight by June 1), register for this offer with your trueBlue (frequent flyer program) number, or sign up for the program if you haven't already, and you'll get a $50 travel voucher for travel on any of their flights taken between September 5 and October 31. The only caveat: you must take a round-trip flight, not just a one way. However, the vouchers can be used on one-way flights. You can earn up to four vouchers.