On Travel Zoo's "This week's top 20" email, they mentioned Milwaukee-California flights for as little as $75 each way.
Looking into this a little further, Midwest has a lot of $170 round-trip fares on the MKE-SAN non-stops during most of April and May.
I wonder if bookings have been weak for early spring? In any event, there are some great fares available for anyone wanting to head to the West Coast, especially for a long weekend.
http://www.fly.com/FlyWidgets/FareAl...ate=06/30/2010