Just to set the record straight, Richmond, CA does not have an airport. I don't think they even have one for small private planes. However, teams could fly into San Francisco or Oakland, which both have international flights and then drive or take a taxi or BART.
I think it's highly unlikely they would go to Richmond though. I'm not sure what they would do there besides go to an oil refinery. Richmond, VA would seem far more likely. It's also about the same size as Santa Barbara (I think).