Fare availability: end of October - early March 2017
Best thing to do is search date availability using google flights , then plug in those dates into Priceline to book (free cancellation within 24 hrs of booking.
My sample travel dates:
Feb 10-15, 2017 (over Valentines Day) - SJC-BWI
Nov 4-11, 2016 - OAK-BWI-OAK