While not required, masks are still recommended to be worn at King County International Airport-Boeing Field
Guided by a Transportation Security Administration (TSA) statement on April 18, masks are no longer required at King County International Airport-Boeing Field. However, Public Health - Seattle & King County continues to recommend that people wear masks in indoor public transportation settings, including the airport terminal, at this time.
A high-quality mask can reduce your risk of infection and help prevent spread of COVID-19 to others who are not able to be vaccinated or at high risk for severe infections.
Masks should cover both the mouth and nose, fit snugly but comfortably on the face with no large gaps, and should be made of a solid piece of material without slits, exhalation valves, or punctures. More information about acceptable masks and their use is available on the CDC's website.