<p>You’ll be taking BART from the Berkeley station to Oakland Coliseum (or thereabouts) and xferring to the AirBART which takes you to the airport. You can check out the schedules online. If you are really pressed for time, a taxi will probably take 30-40 minutes (assuming there is any traffic). </p>
<p>Like LA, the traffic in the Bay Area is getting harder and harder to predict. From the rough sounds of it, 3hrs should be plenty of time (even given the 60 minute check-in). The day of the week will also affect it, as there are plenty of commuters who fly between socal and nocal.</p>