Originally Posted by
Xrayman
My last 8 trips out of SEA and checkpoint 5 there has not been anyone manning the terminal- “ uhhhh, no one is available”. Typically morning between 8 am and 10 am weekday.
According to thread
SEA Checkpoint Changes (8/11/2025), checkpoint 3 also offers touchless PreCheck at SEA. May want to give that a shot next time if the one at checkpoint 5 is unmanned again, provided you have the time/inclination to detour to checkpoint 3.