Certainly the most compelling evidence in favor of flat earth is how we can see things from much father away than curvature math would allow.  And the typical response is that it's a mirage or it's refraction.  That's why I haven't been able to be 100% sure of flat earth.  But the one guy had his video trained on Chicago for 40 miles out across Lake Michigan and kept it in view the entire time, positively ruling out refraction/mirage.  Now, unless he completely faked the experience, that kind of thing is compelling evidence.  I found the longer video to which this referred briefly.

Yes.
I also really enjoyed the flight paths shown at the 24:00 mark.
If you think of it, there is no reason that there should be no cross-ocean flights in the southern hemisphere. Why is it all flights are over the landmass? 
Makes no sense if it were a globe.

Yes.
I also really enjoyed the flight paths shown at the 24:00 mark.
If you think of it, there is no reason that there should be no cross-ocean flights in the southern hemisphere. Why is it all flights are over the landmass?
Makes no sense if it were a globe.

I actually looked into how long 747s can fly without refueling thinking that perhaps it was too long a flight over water, but it wasn't.  747s can fly well beyond trans-ocean flight path.

There was another guy who had a video where he pulled news articles of a lady who was giving birth on a flight and said that the flight made an emergency landing in Alaska.  But Alaska was a huge distance from the globe-earth flight path, but right there near the flat-earth flight path.  On the globe earth, there would have been a couple of much better places to land.

Sounds like he needs a couple doses of Midol.

Somebody get him a pint of Ben & Jerry's and a hot water bottle to go with it.

I actually looked into how long 747s can fly without refueling thinking that perhaps it was too long a flight over water, but it wasn't.  747s can fly well beyond trans-ocean flight path.

There was another guy who had a video where he pulled news articles of a lady who was giving birth on a flight and said that the flight made an emergency landing in Alaska.  But Alaska was a huge distance from the globe-earth flight path, but right there near the flat-earth flight path.  On the globe earth, there would have been a couple of much better places to land.

I spent some time reading about Boeing 777's which have the longest range at 8, 500 -9, 000 nm.
The nonstop flights from LAX to SYD take 15 hours. Their top speed is about 600mph. But that would not be their average speed. That's probably closer to 450-500mph.
Its interesting to note we can only fly 6, 500-7, 000nm without a stop.
This is why they are following the landmasses on their routes: the distance across oceans between the southern continents exceed 6, 500nm.
They can't fulfill the range.

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Most southern hemisphere flights that are shown with stopovers in the northern hemisphere are doing that because the so-called flight is actually two flights, and the passengers going from Johannesburg to Santiago (or other similar cities) have to transfer to a different plane at the stopover. The reason is, there is not enough demand for flights from Johannesburg to Santiago (or similar cities) to make regular direct flights practical. Airlines don't like to keep flights active when they can't sell all the seats and end up flying with too many empty seats.
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Of course, inconvenient details like that are very tempting for flat-earthers to ignore or overlook. Perhaps they think it's fun to pretend the reality is otherwise while they intentionally leave out important information with the intent to deceive.
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In other words, we're being lied to. Can you imagine flat-earthers lying to us? Amazing! While they complain that NASA is lying to us.
Maybe this is flat-earthers' way of getting even, or "it's payback time?"

I actually looked into how long 747s can fly without refueling thinking that perhaps it was too long a flight over water, but it wasn't.  747s can fly well beyond trans-ocean flight path.

There was another guy who had a video where he pulled news articles of a lady who was giving birth on a flight and said that the flight made an emergency landing in Alaska.  But Alaska was a huge distance from the globe-earth flight path, but right there near the flat-earth flight path.  On the globe earth, there would have been a couple of much better places to land.

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There was a flight from Japan to DFW that stopped in Alaska for a maternity emergency, but the flight path took the plane to within 200 miles of Anchorage along the Great Circle route from Japan to Texas, so it was the closest place to land for a medical emergency.
The "globe-earth flight path" isn't always what you might think it is. Many times they don't use a totally GC route for many reasons.
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https://aviation.stackexchange.com/questions/37748/why-might-this-trans-pacific-flight-not-follow-a-more-direct-route

American Airlines 127 Thursday 04-May-2017
Compared to great circle route:

Very rarely does a flight follow the great circle route all the way. Every day the route is changed due to winds - you want to find the tailwinds and avoid the headwinds. Other considerations include airspace restrictions (China is notoriously bad for that), ETOPS, or weather. – Ben May 5 '17 at 6:46

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Most southern hemisphere flights that are shown with stopovers in the northern hemisphere are doing that because the so-called flight is actually two flights, and the passengers going from Johannesburg to Santiago (or other similar cities) have to transfer to a different plane at the stopover. The reason is, there is not enough demand for flights from Johannesburg to Santiago (or similar cities) to make regular direct flights practical. Airlines don't like to keep flights active when they can't sell all the seats and end up flying with too many empty seats.
.
Of course, inconvenient details like that are very tempting for flat-earthers to ignore or overlook. Perhaps they think it's fun to pretend the reality is otherwise while they intentionally leave out important information with the intent to deceive.
.
In other words, we're being lied to. Can you imagine flat-earthers lying to us? Amazing! While they complain that NASA is lying to us.
Maybe this is flat-earthers' way of getting even, or "it's payback time?"

"Not enough demand" is a TOTAL lie.
Airlines do everything to make money. Fuel costs MONEY. 
They are NOT going to fly  an 8, 000nm "V" into the north, if they can fly a 5, 000nm STRAIGHT LINE in the south.
But they don't and they can't because it is not 5, 000nm.
And this is not confined to one route: there are NO NONSTOP trans-ocean flights in the southern hemisphere between ANY cities.