A dining and retail employee tested positive for COVID-19 and last worked on December 19 in the Central Terminal.
Four passengers tested positive for COVID-19 in the early hours of December 20, but all arrived at SEA on December 19, 2020.
The first passenger arrived on Delta Air Lines flight 748 from San Diego International Airport (SAN), and moved through the South Satellite, baggage claim, and the international ticketing area.
The second passenger arrived on American Airlines flight 2009 from Dallas/Fort Worth International Airport (DFW), and moved through Concourse D, baggage claim, and the international ticketing area.
The third passenger arrived on Southwest Airlines flight 826 from Sacramento International Airport (SMF), and moved through Concourse B, baggage claim, and the international ticketing area.
The fourth passenger arrived on Delta Air Lines flight 337 from Hartsfield-Jackson Atlanta International Airport (ATL), and moved through Concourse A, baggage claim, and the international ticketing area.
