Two thoughts: One, I doubt there is a direct flight from NY to China. And two, if there WERE, it would be a LOT longer than 13 hours! I flew from NY to Hawaii and that was not a non-stop. NY-Dallas-Honolulu. The Dallas-Honolulu leg was 12 hours! Knowing that, I estimate if there WERE a non-stop flight from NY to Shanghai, it would be no less than a 24 hour flight!
Two thoughts: One, I doubt there is a direct flight from NY to China. And two, if there WERE, it would be a LOT longer than 13 hours! I flew from NY to Hawaii and that was not a non-stop. NY-Dallas-Honolulu. The Dallas-Honolulu leg was 12 hours! Knowing that, I estimate if there WERE a non-stop flight from NY to Shanghai, it would be no less than a 24 hour flight!