Originally Posted by
GeneralVeers
If I don't need to check luggage or talk to a gate agent, I usually go through security at T3 to get on my AA flights. Security lines are much shorter, and the tram is much quicker (and less crowded) to the D gates than going through T1.
Vegas can be one of the quickest large U.S. airports to get through if you have Pre-check and you know where you are going. Typically curb to gate in about 15 minutes for me.
When pre-check started, using that lane at D gate in LAS, generally I was the only one^. Now that they are "randomly" placing lots of pax in p-c lines...its still fast, but not as quick as it used to be.

For D gates, there are peak periods, when lots of flights seem to depart at the same time [6 am-8 am], so the lines can be long.
After 9 pm, the lines are so short, that there are generally more TSA agents than pax.