Originally Posted by
shd9
MIA is somewhere AA's 789 could fly to for sure, but it will be heavily reliant on Latin American connections from Japan, which are probably not the highest-yielding traffic.
Another problem with that model is that the US doesn't have TWOV (Transit With Out Visa), so unless you're citizen of Chile, if you're from Central or South America, you'd need to have a US visa in order to connect at MIA on your way to Japan. I suspect that the Aeromexico flight MEX-NRT picks up quite a lot of this traffic for this reason alone.