San Francisco International Airport (SFO)
The Marin Airporter goes from San Francisco Airport from 4 am to midnight and leaves SFO every half hour on the hour. It goes from their Marin County office in Larkspur to the airport every half hour from 4am to midnight too. We now are able to pick you up at the Larkspur office or leave the car there for you. When you fly out we can either drive you to Larkspur or you can park the car there for $4 and we will pick it up later for you. Call us for more details. 415 454 4008
Oakland International Airport (OAK)
The Shuttle bus to and from Oakland Airport to San Rafael runs every two hours so check their schedule.
From San Francisco you must take the Golden Gate Transit Bus.
Check their schedule
From East Bay you can take the Bart to Richmond or El Cerrito and take a Bus to San Rafael from there.