Airports / California / SFO
San Francisco (SFO) TSA wait times
Security at San Francisco International Airport is running about 18 minutes in the standard lane, and usually runs 15 to 25 minutes at 8 pm on a Sunday. PreCheck is moving in about 6 minutes.SFO security is about 18 minutes now, usually 15 to 25 at this hour. Busiest 6 to 8 AM and 2 to 4 PM.
Standard lane, right now
Security wait, last 7 hours
Usually 15 to 25 minutes now
Up 2 min since 2 pm.
When is SFO security busiest?
The left chart shows today's security wait hour by hour, built from SFO's own departure schedule. The right ranks the days of the week by how long the wait gets. The calmest window is (23, 3); plan around the 6 to 8 AM and 2 to 4 PM rushes.Calmest (23, 3). Plan around the morning and evening rushes.
Departures, the next few hours
| Hour | Departures | Typical security wait |
|---|---|---|
| 8 pm (Now) | 23 flights | 18 min |
| 9 pm | 20 flights | 15 min |
| 10 pm | 13 flights | 9 min |
| 11 pm | 3 flights | 5 min |
| midnight | 0 flights | 4 min |
Standard, PreCheck, and CLEAR security lanes
Terminals and security at SFO
Which airline you fly decides your terminal. Terminal 3 runs the longest lines here. The per-terminal minute is modeled from each terminal's share of departures, not measured. All terminals connect after security, so a quieter checkpoint is an option.
Regional carriers fly these routes under the mainline brands, so a SkyWest flight shows on your ticket as Delta, United, American or Alaska.
SFO security, common questions
How early should I get to SFO?
For a domestic flight out of San Francisco, plan to be inside the terminal about an hour before departure, and about an hour and a half for an international one. That covers a 20 to 35 minute checkpoint queue at the Monday peak plus the walk to the gate. Outside the peak you can safely trim it; the calculator above works it out from your actual departure time.
What is the busiest time at SFO security?
Monday around 7 am, when 31 departures' worth of passengers are converging on the checkpoint at once. The calmest hour with real traffic is Tuesday at 10 pm, at roughly 8 minutes.
Is TSA PreCheck worth it at SFO?
At the Monday peak it turns a 20 to 35 minute queue into something closer to 9 minutes. Over a five year membership that is worth it if you fly more than about three round trips a year through an airport this busy. The trusted traveler calculator prices it against your own flying.
When does security open at SFO?
San Francisco International Airport does not publish checkpoint opening hours in any national feed, so we will not invent them. What the schedule does show is that the first departures leave around 2 am, and checkpoints generally open about two hours before the first flight of the day.
Tips for SFO, from the data
- Fly between (23, 3) if you can. That window sits between the two daily rushes, when the checkpoint is at its calmest.
- The 7 am hour is the single busiest today, at about 25 minutes in the standard lane.
- United runs 41% of departures here, so its checkpoints and gates carry the most traffic. Which airline you fly is what decides your terminal.
- United flies from Terminal 3, which runs the longest lines here. All terminals connect after security, so you can clear at a quieter one and walk over.
Related
Modeled from the flight schedule, not measured. How these numbers are made.