Originally Posted by
msglsmo
Interesting. The link shows TSAPre open during the 3a-4a hour as well.
Yes interesting as the SFO website states
Security Checkpoint F1
Hours: 4:00 a.m. to 12:30 a.m.
May be worth noting TSA does not run the security at SFO.
Covenant Aviation Security, a private company under contract with the Transportation Security Administration (TSA), provides passenger and baggage screening at SFO.