Quick reference directions from some of the nearby airports
From Oakland International Airport (OAK):
Take I-880 North toward Walnut Creek to I-680 East to I-80 toward Sacramento (TOLL ROAD).
From Sacramento International Aiport (SMF):
Take I-5 South to I-80 West toward San Francisco. Alternate Route from Sacramento International Airport to Fairfield take I-5 North to Woodland, exit Main Street to CA Highway 113 toward Davis to I-80 West toward San Francisco.
From San Francisco International Airport (SFO):
Take US 101 North to I-80 East (Bay Bridge/Oakland) toward Sacramento (TOLL ROAD).
From San Jose International Airport Norman Y. Mineta (SJC):
Take I-880 North to Mission Blvd exit toward Sacramento to I-680 North Ramp.