It may be worth your while to investigate these other international airports near San Mateo. Use the following codes in your favourite online ticket website:
Oakland (airport code: OAK)
San Francisco (SFO)
San Jose (SJC)
As mentioned here http://makezine.com/wiki/makerfaire06/index.cgi?TravelTips, the BART rapid transit connects to SFO and OAK, and CALTRAIN to SJC.
Not being native to the area, I don't know all the other local airports - perhaps somebody else will wish to contribute that info?
