Thanks...do you think it would be worth it to just spend a little more money and fly the Asiana JFK-ICN nonstop and the ICN-SFO back? Since I absolutely need to be there and if I'm not there I'm screwed. It'll cost me about $400 more.

According to flightstats the AA flight has a pretty good ontime performance rate (AA59). Maybe I'll pull the trigger and book.