Dallas to Washington DC or Vice Versa on Virgin America Nonstop $138 RT Summer Travel

Summer dates available! Virgin America has roundtrip airfares to and from Dallas (DAL) and Washington DC (DCA) for $138 including taxes and fees. This is nonstop service.
Travel Availability:
Departs DAL: April 4, 11, 12, 19, 25, 26; May 2-3; July 11, 12, 18, 19, 25, 26; Aug 1, 2
Departs DCA: April 4, 18, 19, 25, 26; May 2, 3, 9, 10; Jun 6; July 11, 18, 19, 25, 26; Aug 1, 2
Use dates and book it on Virgin America
sample attached.