Travel is available on Tuesdays and Wednesdays, but other days of the week are open for just $15 more at $126 roundtrip.
Searching on Delta's website, I found seats departing SEA on Tuesday, October 2, and returning from DEN on Tuesday, October 9, 2018.
We have a lot of flight deals heading out of Seattle today, so make sure to have a look at our SEA departures page.
Need a room a Mile High? We've got lots of accommodations available for the mentioned dates on Hotelwatchdog.