We'll be coming in by train from Kyoto the same day as our flight. We'll be flying home from Narita to Los Angeles via Singapore Airlines on a Saturday in June (Terminal One). Our flight does not leave until 18:45. In Los Angeles, the requested arrival time is 3 hours before an international flight. Is 3 hours before an international flight out of Narita sufficient? Any advice is greatly appreciated.
Please, only answer this question if you have actually taken an international flight out of Narita International Airport.