Originally Posted by BThumme

It's a direct flight, that's why you're running into this (the flight number is the same). It's not super common, but a lot of us would know something is up as:
1)UA doesn't operate SFO-LGA nonstop
2) Most certainly doesn't fly 772's into LGA
3) the time makes no-sense. that is a glitch however, as it's showing you the SFO-DEN time, completely leaving out the next time. There was a post about this a couple pages ago.