Route on-time record
KOA to SFO: most on-time flights and the best time to fly
Kailua-Kona (Ellison Onizuka Kona International Airport at Keāhole) to San Francisco (San Francisco International Airport). 1,008 nonstop flights in Jun 2025 to May 2026, 83% arrived within 15 minutes and 1.0% were cancelled. The most reliable flight number was United 1724 at 10:48 PM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
KOA → SFO
Kailua-Kona to San Francisco: 1,008 nonstop flights a year
On time (12 months)
83%
Cancelled
1.0%
avg delay 12 min
Best time to leave
After 9 PM
92% on time vs 80% noon to 3 PM
Most reliable airline
United
85% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · United 1724
10:48 PM → 6:57 AM5h 09m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
- On time (history)
- 95%
- Cancelled
- 0.7%
- Avg arrival delay
- 11 min
- Arrived on time 95% of the time (274 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (After 9 PM: 92% on time; Noon to 3 PM: 80%).
Strong track record · 274 flights
Find United 1724 fares Opens this date on Aviasales#2 · United 1321
7:00 AM → 3:10 PM5h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 100%
- Cancelled
- 0.0%
- Avg arrival delay
- 2 min
- Arrived on time 100% of the time (10 flights, Jun 2025 to May 2026).
- Short track record (10 flights), so its score leans on the airline's record at this hour.
Limited track record · 10 flights
Find United 1321 fares Opens this date on Aviasales#3 · United 693
2:02 PM → 10:10 PM5h 08m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 84%
- Cancelled
- 0.8%
- Avg arrival delay
- 7 min
- Arrived on time 84% of the time (128 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 80% on time; After 9 PM: 92%).
Moderate track record · 128 flights
Find United 693 fares Opens this date on Aviasales#4 · United 1722
12:02 PM → 8:10 PM5h 08m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 79%
- Cancelled
- 1.6%
- Avg arrival delay
- 12 min
- Arrived on time 79% of the time (357 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (Noon to 3 PM: 80% on time; After 9 PM: 92%).
- 51% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 357 flights
Find United 1722 fares Opens this date on Aviasales#5 · Alaska 788
10:57 PM → 7:04 AM5h 07m nonstop
Local times, typical schedule. Last flown 2026-03-16.
74%
chance on time
- On time (history)
- 73%
- Cancelled
- 0.6%
- Avg arrival delay
- 18 min
- Arrived on time 73% of the time (159 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (After 9 PM: 92% on time; Noon to 3 PM: 80%).
- Lands inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
- 61% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 159 flights
Find Alaska 788 fares Opens this date on Aviasales#6 · Alaska 40
3:59 PM → 11:59 PM5h 03m nonstop
Local times, typical schedule. Last flown 2026-05-31.
73%
chance on time
- On time (history)
- 70%
- Cancelled
- 0.0%
- Avg arrival delay
- 13 min
- Arrived on time 70% of the time (43 flights, Jun 2025 to May 2026).
- Never cancelled in 43 scheduled flights.
- Short track record (43 flights), so its score leans on the airline's record at this hour.
Limited track record · 43 flights
Find Alaska 40 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- United Airlines85%
805 flights · 86% on time as flown · 1.1% cancel
- Alaska Airlines74%
203 flights · 72% on time as flown · 0.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Noon to 3 PM80%
492 flights · avg delay 12 min
- 3 to 6 PM80%
195 flights · avg delay 11 min
- After 9 PM92%
298 flights · avg delay 12 min
Best day: Wednesday (89%). Worst: Thursday (83%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft42%
- Airline (crew, maintenance, boarding)41%
- Air traffic control and airport volume17%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
KOA to SFO questions
- What time of day is best to fly KOA to SFO?
- After 9 PM: 92% of flights arrived on time, against 80% for departures noon to 3 PM.
- Which airline is most on time from KOA to SFO?
- United, with a season-adjusted 85% chance of operating and arriving on time over 805 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on KOA to SFO?
- October (80% on time); the best was September (94%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from KOA
- SFO to KOA (return)
- KOA to HNL 85%
- KOA to LAX 86%
- KOA to OGG 87%
- KOA to SEA 86%
- KOA to SMF 90%
- KOA to PHX 93%
- KOA to DEN 91%
- KOA to LIH 93%
- KOA to LAS 95%
- KOA to SAN 71%
- KOA to PDX 74%
Live status: FAA delays and ground stops