[09/20/2019 @ 11:22 PM CT] Expired.
Delta has round-trip flights from Dallas (DFW) to Kailua-Kona (KOA) for $395 with a connection. Flights in October. Departures on Tuesday, Wednesday, and Thursday. Very few extended weekends available. Origin/Destination reversible.
Note: Carry-on bag is allowed for free on Delta. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.
Note: There are Priceline Express Deals available for these dates for about -$40 less than this. Pick the hidden fare with carry-on included, free seat selection, and stops less than 3-hours.