AS321 (SEA-SFO) on December 20, 2019 This Alaska Airlines flight traveled from Tacoma International Airport to San Francisco International Airport, on December 20, 2019. It arrived at gate D1. Passengers were flying aboard a Boeing 737-900 with tail number N318AS. See all the flights for AS321.

Flight path for AS321 on this date

Sometimes flight paths may look a bit weird in places, because that is (can be) the nature of radar data. It should still give you a rough idea of where this flight traveled to and from though.