I just received an email from JetBlue that probably went out to all True Blue (its loyalty program) members. The email contains a promo code that will discount a mystery amount from any JetBlue roundtrip that originates in the U.S..

What do I mean by a mystery amount? To take advantage, you have to go to jetblue.com/promo, type in your code, perform a flight search, and select flights.

Then on the right side of the screen where the total cost is displayed, your mystery discount along with the new total will be displayed.