JetBlue has a number of city pairs on sale during their latest flash sale that starts at $15.
Link: JetBlue Flash Sale from $15
Flash sales are quick deals that can and will go fast. Check the list and if there is something that looks good to you, book it! Also, note that these sales are only valid for certain dates and times so make sure you take note of that.
There are some nice deals on this list, including the new-this-year Buffalo to LAX for $50. That is available on November 12 at 6:45PM. There are some southern destinations as well!
Make sure you follow JetBlue’s deal account on Twitter to get notified when these happen.