Originally Posted by missydarlin
then you should be fine for standby.
The only other caution is that voluntary stopovers are not permitted. If you standby early..its entirely possible that they will clear you all the way to ANC on the earlier PDX-ANC nonstop.
But you have to stay along the same route, right (i.e., no SFO-SEA-ANC)?
If that's the case, the number of viable PDX choices is going to be a limiting factor. There are far fewer of those than via SEA.