And, if you're interested in last nights iteration of the later flight, UA7937, operated by TransStates, here ya go:
Date & Time Source Event Data Updated
Jul 16
11:13 AM Schedules RecordCreated
Jul 19
# 03:30 AM FAA Time Adjustment Scheduled Runway Departure Changed To 07/19/07 10:41 PM
# Estimated Runway Departure Changed To 07/19/07 10:41 PM
# Scheduled Runway Arrival Changed To 07/19/07 11:31 PM
# Estimated Runway Arrival Changed To 07/19/07 11:31 PM
Jul 19
# 06:04 AM Airline Gate Adjustment Departure Gate Changed To F4
Jul 20
# 02:41 AM FAA Time Adjustment Estimated Runway Departure Changed From 07/19/07 10:41 PM To 07/20/07 12:28 AM
# Estimated Runway Arrival Changed From 07/19/07 11:31 PM To 07/20/07 01:18 AM
Jul 20
# 05:53 AM FAA Time Adjustment Estimated Runway Departure Changed From 07/20/07 12:28 AM To 07/20/07 12:48 AM
# Estimated Runway Arrival Changed From 07/20/07 01:18 AM To 07/20/07 01:29 AM
Jul 20
# 05:53 AM FAA Time Adjustment Estimated Runway Arrival Changed From 07/20/07 01:29 AM To 07/20/07 01:38 AM
Jul 20
# 05:55 AM FAA STATUS-Active Actual Runway Departure Changed To 07/20/07 12:51 AM
# Status Changed From Scheduled To Active
Jul 20
# 06:05 AM FAA Time Adjustment Estimated Runway Arrival Changed From 07/20/07 01:38 AM To 07/20/07 01:34 AM
Jul 20
# 06:36 AM FAA Time Adjustment Estimated Runway Arrival Changed From 07/20/07 01:34 AM To 07/20/07 01:22 AM
Jul 20
# 06:42 AM FAA STATUS-Wheels Down Actual Runway Arrival Changed To 07/20/07 01:35 AM
# Status Changed From Active To Landed
Historical performance of the flight is pretty good though:
Historical Performance
Ontime: 100%
Average Delay: 7 minutes
Rating: 3.5 of 5
I'd standby on the earlier flight, as suggested, if clearing C/I in time. Often, if a checked bag is destined for an airport an earlier flight goes to, it'll go on that flight rather than your originally booked one. I've had this happen numerous times to me, even with no standby. No bag on the belt, but it's at the service office or set off to the side.
Enjoy your trip!
Pat