Wineries in Ontario, CA
4 wineries in and around Ontario, California — call ahead or check hours before the drive — many small wineries pour only Thursday through Sunday, and harvest season can change everything.
San Antonio Winery
2802 S Milliken Ave, Ontario, CA 91761-2331
Tip: weekday afternoons are the quiet hours — you'll often get the winemaker themselves at the counter. Weekend crowds peak 1–4 pm.