http://www2.jetblue.com/deals/flash-fares/?source=TW091416Example:
RT NY-FLL $80
New York (LGA) Fort Lauderdale, FL (FLL) $40 9/27/16 6:30 AM
Fort Lauderdale, FL (FLL) New York (EWR) $40 10/8/16 8:38 PM
---------------------------
http://www.theflightdeal.com/2016/09/14/jetblue-111-194-new-york-boston-fort-lauderdale-san-juan-puerto-rico-roundtrip-including-all-taxes/jetBlue $111 $194: New York / Boston / Fort Lauderdale San Juan, Puerto Rico. Roundtrip, including all Taxes
jetBlue is running a few good sale to San Juan. The only downside, it has a fixed departure of return date. This fare expires tonight. Prices are:
New York [JFK] $187. Must return on October 7th
Boston [BOS] $194. Must depart on October 4th
Fort Lauderdale [FLL] $111. Must depart on October 9th
Sample Travel Date:
Sample from New York
October 2nd 7th
Fare Availability:
New York [JFK] $187. Must return on October 7th
Boston [BOS] $194. Must depart on October 4th
Fort Lauderdale [FLL] $111. Must depart on October 9th
Use ITA Software Matrix Airfare Search and use the following search criteria:
Departing from: JFK
For Boston availability, replace JFK with BOS on the Departing from: field
For Fort Lauderdale availability, replace JFK with FLL on the Departing from: field
Outbound Advanced Routing Code: b6
Destination: SJU
Return Advanced Routing Code: b6
(Click on Advanced Routing Codes link to enable advanced routing code input)
Select See calendar of lowest fares
Length of stay 3-10 (This is just a sample, you can use any 7 day date range like 3-10, 7-14 etc)