Jet streams are fast flowing, narrow, meandering air currents in the atmosphere. On Earth, the main jet streams are located near the altitude of the tropopause and are westerly winds (flowing west to east).
https://en.wikipedia.org/wiki/Jet_stream

Please, by all means show me an accurate flat earth map. This should be extremely simple since the map and the earth are flat. :-D Then I will transpose the route onto your accurate map.

P.S. The route of the trip is easily seen on the map I provided. It goes south to the south pole and then north to the north pole.

P.S. 2 The jet would have to travel at around 3-4 thousand miles an hour to go from the southern tip of South America to south of Madagascar in a few hours. Do you know of any small business class jets that can accomplish this remarkable feat?

P.S. 3 Are you a moron? You need to travel south to traverse the south pole and you need to travel north to traverse the north pole.

So again:

1. How did the jet jump 20,000 miles in a couple of hours?
2. How did the jet fly an average of 400 mph faster than its maximum speed over the entire route, especially when its position and speed was recorded not doing that for the whole trip? The entire earth's atmosphere is not a giant jet stream that happened to exactly follow the plane's route. In fact, the plane cut through the jet streams at pretty much right angles. Therefore no speed was gained.