Just bought roundtrip tickets from SEA-LAX-PVG for December. (I'm Still within 24hrs cancellation window) The domestic stretch is F fare and trans pacific flight is Z fare in Delta One Suites. Total price was $3483 per person. I could've saved $300 by flying direct SEA-PVG, but that's in a 767-300 Delta one which really isn't that great. By booking the LAX transfer flight, I also get ~23,000 MQM (7000 more than direct) which basically propels me from FO to GM and wifey to FO. This one trip is almost enough to earn a whole 1 category upgrade in status.
I know Delta One Suites can sometimes sell for really expensive rates, Just wondering whether you feel like the detour and extra $300 is worth the bonus MQM and suite experience.