Delta is celebrating its 5-year anniversary of Seattle becoming a hub for the airline with $55 each way flights to/from Seattle. Roundtrip fares are just $109 or less on all routes included in this sale. Alaska Airlines and United are matching prices along most routes.
Travel daily from August 15 through November 15, 2019. Some routes may have random blackout dates, but these fares are pretty wide open for the most part. If you're flexible with travel dates, you may be able to find these prices available over Labor Day weekend.
A Thursday, Friday, or Saturday night stay is required on a few routes. There may also be a 30-day max stay. If Alaska Airlines is matching on a route, it will likely not have any minimum or maximum stay restrictions on any airline.
Tickets must be booked by May 13, 2019.
All fares are nonstop and also work in the reverse direction.
Boise to Seattle $105 roundtrip
Los Angeles to Seattle $109 roundtrip
Sacramento to Seattle $109 roundtrip
San Jose to Seattle $109 roundtrip
Spokane to Seattle $109 roundtrip
Medford to Seattle $109 roundtrip
Seattle to Portland $109 roundtrip
Seattle to Las Vegas $109 roundtrip
Seattle to Santa Ana $109 roundtrip
Seattle to Pasco $109 roundtrip
Seattle to Redmond $109 roundtrip
Seattle to San Francisco $109 roundtrip
These fares include a carry-on bag plus a small personal item on Delta and Alaska. United's Basic Economy only includes a small personal item and anything larger must be checked. A checked bag is $30 each way on all airlines.
Seats will be assigned at random upon check-in for these prices on Delta or United. You may be able to pay a fee to choose a specific seat. Alaska Airlines has limited seat selection at the back of the plane in its Saver fare.
Fares can be upgraded to a standard or Main Cabin Economy for an extra $20-$60 roundtrip. which includes a full-size carry-on bag, standard advanced seat selection, and allows ticket changes/upgrades for a fee. First checked bag fee is the same $30 each way.
As an example, I found seats departing Seattle SEA on Thursday, September 12, returning from Santa Ana SNA on Monday, September 16, for $109 roundtrip. Perfect for a fall weekend getaway.