Flight Reliability
AS 843 · Alaska Airlines
Seattle → Kailua-Kona (SEA–KOA)85% of its flights flew this route. The rest (SEA–HNL, PDX–HNL) are included in these numbers.
- 62%
- Arrive within 15 minutes
- 16 min
- Average arrival delay
- 1.2%
- Cancelled
- 8 min
- Median arrival delay
Based on 173 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
AS 843 departing between 12–3 PM arrived on time 64% of the time, versus 53% between 6–9 PM.
Friday is doing you no favors.
AS 843 arrived on time 73% of the time on Mondays and just 54% on Fridays. That gap is worth planning around.
Lagging the SEA–KOA route.
AS 843 arrived on time 62% of the time, versus 72% across the SEA–KOA route.
Well behind the Alaska Airlines network.
AS 843 arrived on time 62% of the time, versus 80% across the Alaska Airlines network.
The breakdown
- Mon73%(22 flights)
- Tue61%(23 flights)
- Wed61%(23 flights)
- Thu58%(24 flights)
- Fri54%(24 flights)
- Sat66%(29 flights)
- Sun63%(24 flights)
- 9 AM–12 PM—(6 flights)
- 12–3 PM64%(144 flights)
- 6–9 PM53%(19 flights)
Jun 55% → May 53% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 55% | 29 |
| July 2025 | 50% | 30 |
| August 2025 | 58% | 31 |
| September 2025 | 83% | 30 |
| October 2025 | 75% | 24 |
| May 2026 | 53% | 19 |
- Departures on time
- 61%
- Diverted
- 1.2%
- Flights flown
- 169
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 173 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.