Fare basis ZNN14FNQ. Books into Z/P.

The PHX<>GRU deals were sadly not available on DL. But I took inspiration from it and stumbled upon this nice deal SFO<>EZE @ ~$2600ai.

7 night minimum stay required; was a little difficult to put together, because availablility varied on different routes day-by-day and week-by-week. My travel dates are late Mar. - early Apr. but there seemed to be a lot of other dates available. No date restrictions are mentioned in the fare rules as far as I can tell.

SFO>SLC>LAX>ATL>EZE was possible on the outbound, but I didn't like the timing. Also, theoretically possible to travel EZE>ATL>DTW/JFK>SFO on the return. I also theoretically saw EZE>ATL>JFK>MSP>SFO, though that doesn't add a lot of additional miles because MSP is essentially an overflight.

I advise to build your itin in Matrix first, then put together flight by flight using the Search by Schedule and Multi-Stop at Delta.com.

Do not use Search by Price at delta.com. I did this at first but began getting the notorious "The price has changed..." error when trying to purchase.