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1,422 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: airlines and hours on this route all land within a few points of 88% on time.

Best time to leave 9–10 am 92% arrive on time from KOA
Best single flight DL 485 KOA 20:50 → SEA 05:49 · 93% on time Avoid AS 205 KOA 13:18 → SEA 22:11 · 82% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

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KOA
94
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89
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55
Seattle flights leaving KOA 9–10 pm: 1Close ×
AS 259 KOA 21:19 SEA 06:12 5h 53m 214 91% 1.4% 37 min

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
Delta 365 91% 3.0% 46 min
Alaska 1,057 86% 1.9% 59 min

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
DL 485 KOA 20:50 SEA 05:49 93%
AS 259 KOA 21:19 SEA 06:12 91%
AS 205 KOA 13:18 SEA 22:11 82%
All 5 flights on this route →

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
Delta KOA SEA 5h 59m 91% 3.0% 365 Flying now
Alaska KOA SEA 5h 55m 86% 1.9% 1,057 Flying now
Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON