If you are looking to book a JetBlue flight with points, through March 4, 2016, you can travel for 25% off! This promotion is valid for travel April 26 through June 16, 2016 (excludes Sundays and May 26-30). There is no promotion code to use, instead when you search for flights, the 25% discount is already accounted for. Additionally, fares will not be discounted below 3,500 points.
This is a great deal in my opinion if the flight dates work for you. And since JetBlue pretty much has a fixed redemption where the more expensive the flight, the more points you use, you might as well use the points to fly with this promotion. Side note: Flights cannot be below 3,500 points.