Spirit Airline has round trip non-stop ticket from Washington/Baltimore (BWI) to San Diego (SAN) starting from 129$
I know Spirit is one of the Airlines that charge you everything beyond a small carry-on. But even after adding additional check baggage fee, this price is significantly cheaper than major airlines offering.
Availability: Early December, Jan-Feb 2018, See chart below (6 nights sample stay)
Book your trip on Priceline, Travelocity, Cheaptickets, Cheap-o-air
