There is no direct flight from SEA to SFO to HKG . The only flight flight from SFO to HKG is UA869. Direct flight booking is an non issue for OP and may be just confusing the situation.
Back to the OP
Originally Posted by
fmliu
I'm using a SWU from SEA to SFO to HKG.
1st segment (SEA to SFO) is showing F0.
Can the SFO-HKG upgrade clear even though 1st segment won't?
in your case, yes
Is the SFO to HKG showing NC>0?? (NC is the upgrade inventory -- empty seats at this time in C is no guarantee of upgrading)
Originally Posted by
fmliu
....Or should I change the SWU to only apply for SFO-HKG?
Thanks.
This is usually the prudent thing to do and once the longer flight has cleared ask for the SWU to be extended to the shorter flight.