Three passengers tested positive for COVID-19 in the early hours of March 10, 2021, but all arrived at SEA on March 9, 2021. The first passenger arrived on American Airlines flight #2009 from DFW, and moved through Concourse D, bag claim, the USO and ticketing. The second passenger arrived from DFW on American Airlines flight #2130L, and moved through Concourse D, bag claim and ticketing. The third passenger arrived on American Airlines flight #1681 from PHX, and traveled through Concourse D, bag claim, the USO and ticketing.
