The new international arrivals facility at SEA includes a long walkway that overlooks the ramp between the A concourse and the South Satellite.  I was able to get a few shots as I wandered through there.  A Delta A220-100 was taxiing by when I got there and there was another shortly afterwards.  They are pretty common here these days.  Since A Concourse is heavily used by Delta, no surprise that a lot of their jets were present.  A few Southwest jets were over on B with some widebodies on the satellite.