poohhead80

Update and new question

Reservation 1 - ATL-IAD-BOS on UA metal (originally today - Saturday 230PM). G fare class
Reservation 2 - BOS-SFO-ICN on UA metal (departing tomorrow Sunday 320PM - SFO-ICN is on Monday). G fare class

Original plan was to have dinner with my friend Saturday night in Boston. Now the dinner is canceled, there is no reason to be in Boston on Saturday night.

I successfully SDCed to Sunday 545AM departure ATL-IAD-BOS.
There are other flights at more reasonable departure time. However, it ways UA system says I have to pay for 915AM departure ATL-EWR-BOS or 1000AM departure ATL-IAD-BOS.

Question 1:
Buying a new ticket price is $254 for 915AM departure ATL-EWR-BOS - W class.
SDC fee is $331 for that flight.
So it does not make sense to pay the SDC price.
If I keep checking and get lucky, is there a chance for SDC without fee? Or is SDC fee pretty much set for this flight and there is no chance of change?

Question 2:
Within 24hr of BOS-SFO flight, will UA system allow me to SDC to ATL-SFO nonstop or ATL-IAH/ORD/IAD/DEN-SFO flight? Is this something I have to call UA?

Thanks, in advance.