[06/07/2019 @ 1:38 PM] Still available.
American Airlines has round-trip flights from Dallas (DFW) to Seattle (SEA) for $179, NONSTOP. Flights in May, August, September, October, and November. Weekends available. Origin/Destination reversible.
Note: Unlike the Spirit deal from earlier today; American allows for a free carry-on bag, weekend availability, fewer fees, and a larger available date range.
Note: You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.