Originally Posted by
RichardInSF
Never tried it, but I doubt that it would work.
I've done this twice and it's saved me a ton of time. When I fly United, I park in the International Terminal G lot, walk down the long hallway to the International Terminal, go through security at G (usually a very short line), then walk down that hallway connecting to the domestic terminal. Then I take a look at the long lines at T3 security (even the elite one can be slow) and feel very good about my decision.
On both occasions, no one mentioned my domestic boarding pass and gate. I don't think they care at all. If anyone balks, I suggest saying that you're going to the United Club right there in G post-security before your domestic flight.