I haven’t tried it with American Airlines miles, but it was a pretty seamless process with United to go to other star alliance members.
This is a list of one world member airlines:
https://www.oneworld.com/member-airlines/overview
The problem I have always had with American is that so much of their domestic network is serviced by American Eagle/Envoy which is consistently rated the worst airline in the country. As long as you are on mainline American things go fairly smoothly…but if you have to connect to Eagle or originate a trip on them, look out.
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This reply was modified 7 years, 3 months ago by ML.