Flight Reliability
AS 856 · Alaska Airlines
Kailua-Kona → San Jose (KOA–SJC)82% of its flights flew this route. The rest (LAX–IAD) are included in these numbers.
79
Usually Fine
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 0%
- Cancelled
- 1 min early
- Median arrival delay
Based on 60 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
AS 856 departing between 6–9 AM arrived on time 100% of the time, versus 73% between 12–3 PM.
Mondays have been rough.
AS 856 arrived on time 83% of the time on Wednesdays and just 65% on Mondays. That gap is worth planning around.
A bit ahead of the KOA–SJC route.
AS 856 arrived on time 78% of the time, versus 72% across the KOA–SJC route.
The breakdown
- Mon65%(17 flights)
- Tue—(2 flights)
- Wed83%(18 flights)
- Thu—(1 flights)
- Fri78%(18 flights)
- Sat—(1 flights)
- Sun—(2 flights)
- 6–9 AM100%(11 flights)
- 12–3 PM73%(48 flights)
92%
Sep
Jun 74% → Sep 92% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 74% | 19 |
| July 2025 | 62% | 13 |
| August 2025 | 85% | 13 |
| September 2025 | 92% | 12 |
- Departures on time
- 70%
- Diverted
- 1.7%
- Flights flown
- 59
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 60 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.