3M - FLL/PBI - EYW $21 r/t (refundable)
This is valid only for the first few Tuesdays/Wednesdays of December, but could be useful for anyone looking for a cheap mid-week trip. Unfortunately, I think this will only earn redeemable miles with UA, and only earn 250 TrueBlue miles per segment with B6.
There are refundable options available for the same price. Departing/returning to PBI requires a stop in TPA and costs a few dollars more.
The sale could include other origins/destinations. These are the only ones I checked. Google flights and ITA didn't find these fares; I could only see them on the Silver Airways website.
H/T: airfarewatchdog
Last edited by ncSam; Nov 10, 2015 at 12:42 pm
Reason: Additional details