I fly out of SFO on International Flights as well as domestic flights. If a flight is going CDG-SFO then you tell people to meet them at the Arrivals Hall outside Customs. But if the flight is going from LHR-ORD-SFO you would tell them to meet you at the baggage claim at the Domestic Terminal.

And its not a big mistake as you can walk using the interior walkways from the International to Domestic Terminal(I have done this for fun and for exercise). You can walk inside without waiting for the AirTrain or outside in the cold walking to the terminals.

There needs to be better signs that direct passengers to and from the international terminal to the other terminals.

When the Presidents Club at SFO was open I would wait there for my ride or before a flight then I would walk around using the inside walkways to my respective terminal such as United.

Point in case whats a 5 minute walk to a passenger who told you the driver the wrong terminal? Its not your fault as they told you where to drop them off and you did as told ROTFL.