I was just in Seattle twice in the past month.
I would NOT do it, especially with the aircraft (A320 or 757-300).
ORD > SEA is currently showing A320, which are part of the Delta planes WITHOUT 5G protection (whatever it's called - https://www.cnbc.com/2023/07/01/5g-w...s-weekend.html).

From (and to) other places, the (domestic) 757's to/from Seattle have been awful. The flight before ours was delayed 6+ hours, and my exact flight the next day was delayed 3+ hours.
Perfect weather. Both were MX.