Depending on day of travel, UA's options....
Code:
UA 11
SFO
PHL
09/06 10:40 PM
09/07 7:04 AM
05:24
2514 miles
Flight Details
UA 186
SFO
PHL
09/06 2:50 PM
09/06 11:16 PM
05:26
2514 miles
Flight Details
UA 184
SFO
PHL
09/06 9:04 AM
09/06 5:35 PM
05:31
2514 miles
Flight Details
UA 158
SFO
PHL
09/06 11:10 PM
09/07 9:05 AM
06:55
1
ORD
2517 miles
Flight Details
US has a flight which approximates UA's non-stop:
US 942
SFO
PHL
09/06 10:15 PM
09/07 6:23 AM
05:08
2514 miles
IMO, due to the delay in arrival, I'd push for the endorsement. At worst, they'll refund. This presumes the re-schedule does not work for you. From your post, it appears the arrival time with the cx is a non-issue, so I guess you could complain on principal. Maybe the upgrade gods will smile on you