Route on-time record
SFO to KOA: most on-time flights and the best time to fly
San Francisco (San Francisco International Airport) to Kailua-Kona (Ellison Onizuka Kona International Airport at Keāhole). 1,009 nonstop flights in Jun 2025 to May 2026, 86% arrived within 15 minutes and 0.3% were cancelled. The most reliable flight number was United 694 at 10:05 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SFO → KOA
San Francisco to Kailua-Kona: 1,009 nonstop flights a year
On time (12 months)
86%
Cancelled
0.3%
avg delay 8 min
Best time to leave
Before 9 AM
91% on time vs 74% 6 to 9 PM
Most reliable airline
Alaska
88% 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 694
10:05 AM → 12:45 PM5h 40m nonstop
Local times, typical schedule. Last flown 2026-05-31.
90%
chance on time
- On time (history)
- 92%
- Cancelled
- 1.9%
- Avg arrival delay
- 3 min
- Arrived on time 92% of the time (53 flights, Jun 2025 to May 2026).
- Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
- Short track record (53 flights), so its score leans on the airline's record at this hour.
Limited track record · 53 flights
Find United 694 fares Opens this date on Aviasales#2 · Alaska 39
7:00 AM → 9:36 AM5h 36m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Alaska 789; its record covers all of them.
89%
chance on time
- On time (history)
- 89%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 89% of the time (202 flights, Jun 2025 to May 2026).
- Never cancelled in 203 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 74%).
- Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
Strong track record · 202 flights
Find Alaska 39 fares Opens this date on Aviasales#3 · United 1721
8:10 AM → 10:47 AM5h 37m nonstop
Local times, typical schedule. Last flown 2026-05-31.
88%
chance on time
- On time (history)
- 88%
- Cancelled
- 0.3%
- Avg arrival delay
- 9 min
- Arrived on time 88% of the time (362 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 74%).
- Departs inside SFO's trouble window: 61% of its 333 ground stops and delay programs started between 7 AM and 1 PM.
Strong track record · 362 flights
Find United 1721 fares Opens this date on Aviasales#4 · United 731
7:08 PM → 9:45 PM5h 37m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 91%
- Cancelled
- 0.0%
- Avg arrival delay
- 3 min
- Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 74% on time; Before 9 AM: 91%).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
- Short track record (11 flights), so its score leans on the airline's record at this hour.
Limited track record · 11 flights
Find United 731 fares Opens this date on Aviasales#5 · United 1723
4:55 PM → 7:42 PM5h 47m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.4%
- Avg arrival delay
- 8 min
- Arrived on time 79% of the time (276 flights, Jun 2025 to May 2026).
- Departs outside SFO's trouble window (7 AM to 1 PM, when 61% of its 333 ground stops and delay programs started).
Strong track record · 276 flights
Find United 1723 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Alaska Airlines88%
203 flights · 89% on time as flown · 0.1% cancel
- United Airlines85%
806 flights · 86% on time as flown · 0.4% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
288 flights · avg delay 5 min
- 9 AM to noon88%
430 flights · avg delay 9 min
- 3 to 6 PM80%
253 flights · avg delay 8 min
- 6 to 9 PM74%
38 flights · avg delay 9 min
Best day: Monday (86%). Worst: Wednesday (81%).
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
- Airline (crew, maintenance, boarding)41%
- Late-arriving aircraft39%
- Air traffic control and airport volume20%
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
SFO to KOA questions
- What time of day is best to fly SFO to KOA?
- Before 9 AM: 91% of flights arrived on time, against 74% for departures 6 to 9 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from SFO to KOA?
- Alaska, with a season-adjusted 88% chance of operating and arriving on time over 203 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 SFO to KOA?
- February (77% on time); the best was May (90%), 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 SFO
- KOA to SFO (return)
- SFO to LAX 76%
- SFO to SEA 74%
- SFO to JFK 80%
- SFO to SAN 68%
- SFO to LAS 76%
- SFO to ORD 77%
- SFO to DEN 76%
- SFO to SNA 81%
- SFO to PHX 76%
- SFO to BOS 78%
- SFO to EWR 76%
- SFO to DFW 75%
Live status: FAA delays and ground stops