Thanks for the responses. I am still having the problem so let me post a few more details.

If I use their "Easy Schedule Online" (on the timetables page) and search for nonstop flights SFO>LIH on September 3, I see 2 flights:
UA63 departs SFO @ 9:10am
UA65 departs SFO @ 1:10pm

So I go over to Planning Travel, Create itinerary, and try to create even a single ticket one way itinerary for the same date. Here is what comes up.
UA63, departs SFO @ 9:10am
UA65, departs SFO @ 4:35pm ?!

Up until just the other day the departures were at 9:10 and 1:10. That seemed to match what was in the PDF timetable. So I am just questioning why the itinerary builder part of their site suddenly says 65 leaves at 4:35 pm -- which doesn't match the timetable on the other part of their site.

Thanks for any help. I have had my eyes on a 4-leg itinerary including this flight for some time now and was just waiting for the price to do something interesting so I could buy. But now I'm concerned that the flight I wanted is gone and/or being monkeyed with.

/pbz