United MileagePlus (Consolidated) - Help with flights from GRU to EZE

Want to do the following:

Sept 23rd & 24th: ORD to GRU; GRU to Porto Alegre (I can find flights)
Sept 28th or 29th: Porto Alegre to EZE
Oct 2nd or 3rd: EZE to ORD

UA not showing any flights even from partner airlines. Any advice of what *A flights I can take?

Why can't I get a routing on UA to GRU and partner airlines for the flights within South America and then UA home? Does UA no longer fly EZE to ORD nonstop?

Help appreciated!

No EZE-ORD n/s - take UA via IAH (I think they go there) or EWR, or JJ EZE-GRU and then the UA n/s from there

EZE-EWR-ORD or EZE-IAH-ORD on UA
or EZE-PTY-ORD on CM

As to POA-EZE, you will want to fly POA-GRU-EZE on JJ. There is morning (6am arriving 11:25am) and afternoon (3:50pm arriving 1:35am+1). If you cant get these online from UA, go to http://www.tam.com.br/b2c/vgn/v/index and purchase there or get the flight numbers and give to UA reservations to have them ticket you.

Note, however, often times flights within South America are not always widely distributed -- some aren't in the GDSs while others that are in GDSs may not have fares shown or no inventory when in fact there is inventory. Best to try a travel agent which specializes in South America. I suggest Roxane at G T Tours http://gttours.com/contact-us/ she has been really great - professional, competent, quick - for South America travel needs.