I am sorry but you are incorrect. Flights can and do make the ZhengZhou China to Anchorage run non-stop.
Before the iPhone X launch earlier this month, and all month there have been at least a dozen or more times direct flights from ZhengZhou (also know as iPhone City). The direct flights have been flown primary by National Airlines, a contract carrier for UPS. These flights will just appear on Flightware a few hours before the actual departures when the flight plans are logged at ZhengZhou's airport.
Also the final destination is not always UPS's World Hub in Louisville. They have delivered the AT&T bulk shipments to Dallas (Fort Worth Distribution Center) and Memphis. They have also handled the Sprint, T-Moble and Verizon bulk shipments.
Dave
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The easiest way to explain the different "trajectories" is to note the basic UPS shipping flow. Most customers are just happy to know when their iPhone ships and when it is scheduled to arrive. Only a small percentage like us want to know exactly where our new iPhone is at every stop in the fulfillment flow.
UPS runs a series of regularly scheduled flights between China and Louisville. These flights handle the day to day freight loads. In periods of high demand like "now", in additional to the normal UPS flights, contracted dedicated flights are added for periods of large volume of device shipments.
As I mentioned above there are the two National Airlines 747's and other freight only flights like those that Cathay Pacific runs. And finally, your new iPhone X can ride as cargo on passenger flights.
So some flights will be direct from ZhengZhou China to Alaska, while others stop in South Korea, Japan, and Hong Kong as well as other locations to be merged to the regularly scheduled UPS freight flights.
Note: The regular UPS flights run on schedules that vary from daily, 5 days per week and other variations.
Dave
I’m just saying what the norm is. And there has been no screenshots in these thread proving the journey path you state there. Not saying it’s not possible - just stating the travel path of the vast majority - and of all the screenshots posted here. If you have other screenshot proof - by all means - post it!