Today only, JetBlue takes 20% off all 1-way and roundtrip fares via coupon code "SPRING12". That's tied with our December mention as the best general-use coupon we've seen from this airline. Exclusions and blackout dates apply. Taxes and fees are additional and may be substantial. Flights must originate from the U.S. (including Puerto Rico). Book today for travel May 1 through June 13, 2012.