Carrier route record
ASKOA→SFO
Alaska Airlines · Kailua-Kona to San Francisco
- Flights
- 244
- Period
- September 2025 to August 2026
- Share of route
- 20%
- Carriers
- 2
Historical statistics for September 2025 to August 2026, not live status. For today’s flights, check with Alaska Airlines.
Alaska on KOA to SFO sits in the middle of the pack with a C. About seven flights in ten arrive on time by the DOT's definition, 6 points worse than the national rate of 77.3%. The late ones land about an hour behind schedule. That rests on 244 flights, with a median arrival 1 minute early.
The national on-time rate over the same period is 77.3%, so Alaska on KOA to SFO runs 6 points behind the country as a whole. Across a thousand flights that is about 63 extra late arrivals.
Key figures
On time
71.0%
Arrivals under 15 minutes late, of 241 completed flights
Avg delay
60 min
Across delayed arrivals only, not all flights
Cancelled
1.23%
National rate is 1.89%
Whole route
84.6%
Every carrier on KOA to SFO, 1,202 flights
These figures cover 244 flights between September 2025 and August 2026. Beyond the headline rate, 10.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally.
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Carrier by carrier
Alaska against every carrier on KOA to SFO
Alaska flew 244 of the 1,202 flights on KOA to SFO, about 20% of it. Its 71.0% on time is 14 points worse than the route as a whole, which runs 84.6%. Ranked by on-time rate it is last of two carriers on the route, where the range runs from United at 88.1% to Alaska at 71.0%.
Only one carrier clears this site's 365-flight floor here, so there is no comparison to draw. The table below is the full picture.
| Airline | Flights | On time | Avg delay | Cancelled | Grade |
|---|---|---|---|---|---|
| United Airlines | 958 | 88.1% | 70 min | 1.46% | A |
| Alaska Airlines (this page)thin sample | 244 | 71.0% | 60 min | 1.23% | C |
Timetable by Aviasales, a Travelpayouts partner. Booking through it may earn this site a commission at no cost to you; it changes no figure here.
Departure window
When Alaska runs best on this route
Departure time matters more here than the choice of carrier. The gap between the best and worst window is 11 points, against half a point between the best and worst carrier.
- 5am–8am—
- 8am–11am—
- 11am–2pm18 flights—
- 2pm–5pm160 flights69.6%
- 5pm–8pm46 flights80.4%
- 8pm–5am20 flights—
Scale runs 60% to 85%. Rows with fewer than 30 flights show a dash.
The 5pm–8pm window is the strongest at 80.4% on time. The full set of windows spans 11 points.
Across the year
Alaska on KOA to SFO through the year
- Jul–Sep 202517 flights—
- Oct–Dec 202552 flights69.2%
- Jan–Mar 202652 flights66.7%
- Apr–Jun 202661 flights70.5%
- Jul–Sep 202662 flights73.3%
Scale runs 60% to 80%. Rows with fewer than 30 flights show a dash.
Monthly volumes are too low here to break the year into twelve reliable readings. What the twelve-month total says is 71.0% on time across 244 flights.
Quarter by quarter Alaska on KOA to SFO held fairly steady: 69.2% in Oct–Dec 2025, 66.7% in Jan–Mar 2026, 70.5% in Apr–Jun 2026 and 73.3% in Jul–Sep 2026. A spread of 7 points is about what a sample of this size moves on its own, so the annual figure is a fair summary.
Across the week, Tuesday is the strongest day at 83.3% on time and Saturday the weakest at 62.0%, a spread of 21 points.
Arrival by arrival
How late Alaska on KOA to SFO runs when it is late
Alaska on KOA to SFO often beats the schedule: 63 of 241 completed flights, 26%, arrived 15 minutes or more early. The 70 late arrivals split 24 under half an hour, 21 between 30 and 60 minutes, and 25 an hour or more.
- 15+ min early63 flights26.1%
- Within 15 min108 flights44.8%
- 15–29 min late24 flights10.0%
- 30–59 min late21 flights8.7%
- 1–2 hours late18 flights7.5%
- 2+ hours late7 flights2.9%
Scale runs 0% to 100%.
Share of 241 completed flights by arrival against schedule.
26 of 87 late departures made up the time and arrived on time, 30% of them. 9 flights left on time and still arrived late.
The worst days
Worst days for Alaska on KOA to SFO
The latest arrival of the period was on 23 October 2025, 5 hours 5 minutes behind schedule; most of its delay minutes were filed as carrier-caused (crew, maintenance, fuelling, baggage). On three of the five worst days the largest share was filed as a late-arriving aircraft.
| Date | Arrived late by | Largest filed cause |
|---|---|---|
| 23 October 2025 | 5 hours 5 minutes | Carrier |
| 27 June 2026 | 4 hours 5 minutes | Carrier |
| 23 July 2026 | 3 hours 46 minutes | Late-arriving aircraft |
| 25 June 2026 | 2 hours 52 minutes | Late-arriving aircraft |
| 16 July 2026 | 2 hours 23 minutes | Late-arriving aircraft |
Delay causes
Why Alaska runs late on this route
Late-arriving aircraft accounts for 63% of the 4,176 delay minutes carriers reported here, and the remaining four split what is left.
- 63%Late-arriving aircraft
- 26%Carrier
- 10%National Airspace System
- 0%Extreme weather
63% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. Across 4,176 reported delay minutes here, that single category outweighs weather by 63 to one. The split is drawn from 4,176 reported delay minutes.
Cancellations sit at 1.23% against a national 1.89%, which is ordinary. Diversions add another 0.00%.
Connections and stage length
What a delay here costs
10.4% of arrivals land a full hour or more behind schedule, against 8.3% nationally. Ninety minutes is the honest minimum for a connection here, and two hours if the onward flight is on a separate ticket.
At 2,368 miles this is transcontinental flying, and long routes get a quiet structural advantage. Scheduled block time on a flight this length carries more padding in absolute minutes, so a twenty-minute late departure often still becomes an on-time arrival. Read the on-time rate here as slightly flattering next to a short-haul route with the same operational quality.
The return leg is a different operation and performs like one: it runs 91.4% on time across 244 flights, 20 points above this direction. Departure banks, aircraft rotations and the congestion at each end all differ, so scoring the two directions together would average away a real 20 points of difference.
One caution: this is a thin sample. 244 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.
What to do with this
Booking Alaska on KOA to SFO
Put together: treat all of this as provisional. 244 flights over twelve months is enough to clear this site's floor and not enough to be confident to better than a couple of points. The 71.0% headline is the most reliable number on the page; the hour and month splits below it are built on a few dozen flights each. 241 completed flights over 12 months sit behind that.
Related
Where to go next
- KOA to SFO, every carrier
- Alaska on SFO to KOA, the return leg
- United Airlines on KOA to SFO88.1%
- Alaska Airlines network-wide record
- San Francisco International (SFO) delay statistics
- Why the first flight of the morning is statistically safest
- The best time of day to fly, according to 7.05 million flight records
Source: US DOT Bureau of Transportation Statistics, on-time performance data, September 2025 to August 2026. Last updated ; recomputed monthly. How this data is collected.