JetBlue is having another one-day sale! The sale is valid for travel between November 8 and December 15 (blackout dates: November 18-28) for flights on Monday, Tuesday, Wednesday, Thursday, and Saturday. Even if JetBlue is not your airline of choice, it seems like many other air carriers are matching these fares, like Delta.
Even if you have already purchased your JetBlue ticket for this time frame you should be able to get a credit back in the fare difference. Look up to see what the current price is, and if it is less than what you paid call 1-800-JETBLUE, let them know you have an upcoming flight and the fare dropped in price. You should be able to receive a credit valid for 1 year (and they are transferable)!
Go to the JetBlue site to view fare availability and book a flight.