And as I said this is what you're arguing for.
You claimed you weren't.
Won't flightradar capture it?
To answer your deliberate obtuseness, that flight doesn't operate anymore because SAA went bankrupt and is only now starting to pull out of it. They flew the route for years, though.
As others said, your model should work for any other city as well. Let's pick one that has a massive airline hub with flights to all those places and isn't conveniently located near the center of your mp: Dubai.
Where is Dubai on that map, given that Emirates flies to all those places (okay, Buenos Aires was suspended during COVID and it resumes next month) with the following known distances based on flights flown within the last two days (indeed, most have one in the air this second):
LHR ~3,500 miles
South Africa - ~4,000 miles
Tokyo ~5,000 miles
New York - ~6,850 miles
Sydney - ~7,500 miles
A simple point on the map will suffice, but as a hint for the next step, you might need to be prepared to explain why the Tokyo and Sydney flights don't fly over Europe or Africa.
Do you think planes would be risked over vast oceans to landmass or do you think they would offer close proximity to regular landmass/airports?
Well I've flown from San Francisco to New Zealand and back several times. Wasn't a whole lot of land down below, to say the least.
In case you have any actual curiosity on the subject of long overwater flights, look up the term ETOPS.