Am I required to wear a mask at the Airport?

Federal law requires wearing a mask at all times in and on the airport. Failure to comply may result in removal and denial of re-entry. Refusing to wear a mask while at the airport is a violation of Federal Law and individuals may be subject to penalties for non-compliance. For more information, view the CDC’s Federal Register Notice.

My travel plans require a negative COVID-19 test. Can I be tested for COVID-19 at SFO prior to my flight?

Three on-site COVID-19 testing services are available to travelers at SFO:

  • Dignity Health-GoHealth Urgent Care, located in the International Terminal Departures Hall
  • XpresCheck, located on the Arrivals Level of Terminal 3
  • Worksite Labs, drive-thru testing located adjacent to the Long-Term Parking Lot and Cell Phone Waiting Lot

View more information about COVID-19 testing.

What happens if I test positive for COVID-19?

Passengers will be denied boarding if they test positive for COVID-19.

If you are denied boarding due to a positive COVID-19 test result, under the local health orders, you are required to isolate yourself for at least 10 days. If you have no local option to safely self isolate, you may be able to isolate in a County of San Mateo-designated hotel, but you will be charged for your stay. View isolation information for SFO passengers.

I am visiting the United States. What are the requirements?

The Center for Disease Control (CDC) requires all air passengers arriving to the US from a foreign country to get tested for COVID-19 no more than 3 days before their flight departs and to provide proof of the negative result or documentation of having recovered from COVID-19 to the airline before boarding the flight. Furthermore, the CDC recommends that travelers get tested 3-5 days after travel AND stay home or otherwise self-quarantine for 7 days after travel. Please visit the CDC website for details.

Please note that connection cities on your route, your destination and your carrier may have their own requirements; research these requirements prior to booking your flight. An overview of entry requirements for the United States can be found on the International Air Transport Association's COVID-19 Travel Regulations Map.

Additionally, state and local governments may require travelers to self-quarantine upon arrival. Please check with your destination prior to travel

Is there a quarantine for California?

Please visit covid19.ca.gov/travel for the latest information about travel to California.


I am traveling within the United States. Will I be required to quarantine?

According to CDC guidelines, fully vaccinated people can travel at low risk to themselves within the United States and do not need COVID-19 testing or post-travel self-quarantine (unless required by their destination) as long as they continue to take COVID-19 precautions while traveling. This includes wearing a mask, avoiding crowds, socially distancing, and washing hands frequently. A person is considered fully vaccinated two weeks after receiving the last recommended dose of vaccine. View the CDC guidelines for domestic travel recommendations for unvaccinated people.

Some state and local governments may require anyone traveling from certain states to self-quarantine upon arrival. Please check for any travel restrictions at your destination prior to travel.

What do I need to know about traveling to other states and countries?

Travelers are strongly encouraged to research trusted government websites of their destination and any connection points to determine all travel requirements prior to booking their ticket. If a negative COVID-19 test result is required, travelers are strongly encouraged to be aware of the types of test(s) that are accepted and how long test results are valid, and to procure those results prior to leaving their origin airport. Travelers are also encouraged to be aware of any requirements their carrier(s) may have, including health documentation, masks, etc. 

An overview of health requirements can be found on the International Air Transport Association's COVID-19 Travel Regulations Map.

What measures is the airport taking to protect travelers?

Visit our What to Expect at SFO section to learn more about the measures we are taking to protect travelers.

How many employees at SFO have tested positive for COVID-19 since March 2020?

For the week of October 18, 2021 

Since mid-March 2020, SFO is aware of a total of 556 employees at SFO who have tested positive for COVID-19. SFO has outlined a recommended process for all employers in the event of a confirmed case, including protocols to notify employees who may have had close contact with the person who tested positive, compliance with applicable health guidelines and worker safety regulations, and disinfection of the area where the person who tested positive works.

All employees and passengers should monitor their health and assess any symptoms that align with those of COVID-19: fever, cough, or shortness of breath. Before going to a doctor’s office or the medical clinic, call ahead and tell them about your symptoms and where you work. Avoid contact with others, and avoid traveling while sick.