San Francisco International Airport (SFO) is excited to welcome you back! If it’s been some time since your last trip through our terminals, you’ll notice the health measures we've put in place to keep you traveling well. SFO offers COVID testing at two locations in the terminals, as well as an on-airport drive-through service if you need a test to travel. And if you are ready to get your COVID-19 vaccination, SFO’s Medical Clinic offers J&J single dose vaccine for people who are 18 or older on a first come, first served walk-up basis. Learn more.