Originally Posted by
Zorak
I have no personal experience; I believe it's possible, but even if it is, IMO it's not really worth clearing security twice for.
I've actually done this a couple times when I've shown up "too early" at BWI. If you have a couple hours before your flight and have precheck, I would generally say it's worthwhile to pass through security twice to gain lounge access -- at least if you're interested in the free food and drink (which I usually am at BWI, because I'm usually flying domestic from BWI). If they ask at security, just tell them you're heading to the lounge. Obviously, if security is backed up or you're time is limited, it's probably not worthwhile.