Seattle to Kailua Kona Hawaii or Vice Versa $362 RT on United Airlines (travel Mar-Dec)

United Airlines have roundtrip airfares to and from Seattle (SEA) and Kailua Kona Hawaii (KOA) for $362 including taxes and fees. This makes 1 stop.
Travel Availability (hmmm, I didn’t realize so many dates were available so this was a mouthful in a post)
Departs SEA: Mar 26, 27; Apr 24, 27, 28, 30; May 1, 2, 5, 7, 8, 11, 12, 14, 15, 21; Jun 5; Aug 27, 29, 31; Sep 3, 7, 15, 24; Oct 15, 17, 22, 23, 27-31; Nov 2, 3, 5-7, 10, 12, 13, 28, 30; Dec 1, 3-5, 7-8, 10-11
Returns SEA: Mar 27-30; Apr 3, 5, 27, 30; May 1-5, 8-11, 14-18, 21, 23-24; Jun 1, 8, 12, 13; July 4; Aug 29, 30; Sept 1, 3, 5, 6, 8, 10, 12-14, 18, 21, 25, 27-29; Oct 1-3, 5-6, 12, 18, 20, 22-26, 30; Nov 1-22 (no Saturdays); Dec 1-17 (no Saturdays)
Use dates and book it on Priceline. or United Airlines .
Sample travel itinerary attached.