Some recent JetBlue and other airlines' sales haven't been all that stellar, but this is an excellent one indeed, with fares ranging from $29 on short hops to $149 on a few longer routes, each way with no round-trip purchase required.
Pay attention to the date restrictions, however, to avoid disappointment. For example, travel to/from Boston is only available for Tue/Wed travel for travel Apr 28 to Jun 16.
Continental Airlines will likely match this sale from Newark, and other airlines will match on competing routes, if history is an indicator.
New York JFK to Kingston, Jamaica for $69 each way plus tax is a standout, but travel at that fare is valid only on Wednesdays.
This is a short lived sale! Buy tickets between 3/23 (12:01 EDT) - 3/24/10 (11:59 EDT) for travel occurring between 4/13-6/16/10. Offers are for nonstop travel and are subject to change without notice. Offers may not be available on all days or on all flights. Offers must be purchased at time of reservation, and are one-way, nonrefundable and nontransferable. Fare offers (not Award flights) redeemed by telephone, or at an airport or city ticket office, have a $15 fee per person. 14-day advance purchase may be required. Offers do not include Passenger Facility Charges of up to $9 each way, September 11th Security Fees of up to $5 each way, and a Federal Segment Tax of $3.70 per domestic segment (a segment is a takeoff and landing). International offers also do not include government fees and taxes up to $127.60 each way. Puerto Rico offers do not include a U.S. Departure Tax of $16.10 each way. Taxes and fees must be paid at the time of purchase. JetBlue reserves the right to deny boarding to passengers without proper documentation. A second bag fee of $30 applies.
More fine print:
Travel window restrictions: For travel between New York City and Punta Cana: travel must not be before 5/6/10. For travel between Boston and San Jose, CA: travel must not be before 5/13/10. For travel to/from Boston: no travel between 4/14-4/28/10. For travel between New York City and Aguadilla: no travel between 6/9-6/15/10. For travel between Orlando and Newark and/or New York City and between Ft. Lauderdale and Newburgh: travel must take place on Tue., Wed., and/or Thu. For travel between New York City and Charlotte, Portland (ME), and/or Rochester and between Boston and Charlotte and/or Richmond and from Fort Lauderdale to Santo Domingo: travel must take place on Mon., Tue., Wed., Thu., and/or Sat. For travel between Boston and Montego Bay: travel must take place on Wed. For travel from New York City to Saint Lucia: travel must take place on Mon., Thur., and/or Sun. For travel from Washington, DC to Cancun: travel must take place on Sat. For travel between New York City and Richmond and/or Pittsburg: travel must take place on Mon., Tues., Wed., Thurs., Fri., and/or Sat.. For all other city pairs, travel must take place on Tuesdays and/or Wednesdays.
Change/Cancel Policies: NON-AWARD FLIGHT CHANGES/CANCELLATIONS may be made prior to scheduled departure for $100 per person plus applicable fare adjustment by visiting jetblue.com or calling 1-800-JETBLUE (1-800-538-2583), TTY/TDD 1-800-336-5530, Dominican Republic (1-809-200-9898), Bermuda (1-800-884-9616), Mexico (1-800-861-3372). Aruba (1-297-588-5388), St. Maarten (1-801-365-2583), Costa Rica (0800-0121666) or Jamaica (1-800-963-3014). Cancellations are for a JetBlue travel credit only, which is valid for one year. If a reservation is not changed or canceled prior to scheduled departure, all money associated with the reservation is forfeited. TRUEBLUE AWARD FLIGHT CHANGES/CANCELLATION may be made prior to scheduled departure for $100 per person by calling 1-800-JETBLUE, TTY/TDD 1-800-336-5530. In the case of cancellations, TrueBlue points will be re-deposited to the Member's Account. In the case of changes, TrueBlue Points can be applied toward changes, plus any increase in points as resulting from the change.