Thank you for the answer in regards of the jump-seat IAH-EZE.
Any information about how good or bad is SFO-IAH as an standby will be highly appreciated.

Regarding the MIA thing, American, and the frequencies to Argentina, well, one thing is factual: Miami is the only city in the US where there is a big argentinian community (more than 100.000 reported in some websites). There is even the "little Buenos Aires". Plus, MIA is the most popular destinations in the US for the argentinians. 3 AA flights per day to EZE before covid...always full.
I have no idea the legal , logistical or commercial aspect of it, if UNITED is able to get some of that business or not. Can United operate that route?

What is interesting is the attached picture. NOTHING west of Dallas is serviced by ANY airline to Buenos Aires. The west-coast is totally neglected. I remember it was LAX-EZE before, by AA and also Aerolineas Argentinas many years ago... but absolutely nothing now, I wonder if that can be a good option for UNITED. Anyway, I always try to avoid making "commercial analyses or opinions", since I have no clue about many factors involved, so there is the risk of just be talking BS.

Hopefully IAH-EZE will be twice a day and using the 300.

Thanks

Tangalanga