TrueBlue members who take two trips to Boston between now and May 31, 2009 can receive a free ticket to Cancun, Aruba or anywhere else JetBlue flies. Members completing two roundtrip flights between Boston and Denver, Las Vegas, L.A./Long Beach, Oakland, San Diego, San Francisco or Seattle can receive a free roundtrip travel certificate that can be used for a roundtrip flight to any of JetBlue’s destinations.

To be eligible for the free flight, you must register at http://www.jetblue.com/bostonwest before booking your tickets online between March 19 and May 31, 2009. Members who complete two flights on eligible routes by May 31 will receive a travel certificate on or after June 15, 2009 that can be used for a roundtrip flight on JetBlue.

The certificate is valid for travel until Dec. 15, 2009 and capacity controls and blackout dates may apply. If you are traveling with someone and you both want to earn a free certificate, book your reservations separately. According to the terms and conditions, “If a single itinerary has more than one flight of potentially Qualifying Travel, the flight will be deemed Qualifying Travel only for the individual who booked the itinerary.”