Originally Posted by
NWA SLF
What ground speeds are found on flights over Japan.
Yes, JP has very fast jet close by, but doesn't extend as far (proportionally) as the Atlantic jet-stream, I think. Sometimes see flightradar24 showing 690 - 700kts but they don't stay that speed for long and more often are in the 650 - 670kt range. With the larger distance to cover between SE Asia to America, the overall time isn't quite as dramatic as the US - UK speedway?