Eating a bowl of Tempura Udon Soup from Tomokazu has become a tradition these past 10 years. They have ample seating and they are located int he International section of the airport. If you are traveling outside the US, then this is the perfect place to eat an hour before the flight.
Their Udon Noodle Soup is probably the best in San Francisco airport (and I've tried them all). Always clean and the service is friendly.
