Flight Reliability
UA 1723 · United Airlines
San Francisco → Kailua-Kona (SFO–KOA)82% of its flights flew this route. The rest (IDA–DEN, IAH–ATL) are included in these numbers.
- 81%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 0.3%
- Cancelled
- 1 min early
- Median arrival delay
Based on 341 historical flights. Data through May 2026.
What the data says
3–6 PM has a slight edge.
Departures between 3–6 PM arrived on time 82% of the time, against 77% between 12–3 PM.
Thursdays have been rough.
UA 1723 arrived on time 94% of the time on Saturdays and just 67% on Thursdays. That gap is worth planning around.
A bit behind the SFO–KOA route.
UA 1723 arrived on time 81% of the time, versus 87% across the SFO–KOA route.
It basically never cancels.
Out of 341 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon83%(48 flights)
- Tue83%(48 flights)
- Wed70%(47 flights)
- Thu67%(49 flights)
- Fri82%(49 flights)
- Sat94%(47 flights)
- Sun88%(51 flights)
- 6–9 AM—(6 flights)
- 12–3 PM77%(39 flights)
- 3–6 PM82%(253 flights)
- 6–9 PM81%(41 flights)
Jun 83% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 67% | 30 |
| August 2025 | 81% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 68% | 25 |
| November 2025 | 92% | 12 |
| December 2025 | 94% | 31 |
| January 2026 | 81% | 31 |
| February 2026 | 78% | 27 |
| March 2026 | 83% | 30 |
| April 2026 | 77% | 31 |
| May 2026 | 84% | 31 |
- Departures on time
- 86%
- Diverted
- 0.3%
- Flights flown
- 339
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 341 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.