Flight Reliability
UA 430 · United Airlines
Denver → Ontario (DEN–ONT)100% of its flights flew this route. The rest (JAX–IAH) are included in these numbers.
95
Nerd Approved
WanderNerd Reliability Score
- 88%
- Arrive within 15 minutes
- 1 min
- Average arrival delay
- 0.3%
- Cancelled
- 7 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
UA 430 arrived on time 96% of the time on Saturdays and just 79% on Thursdays. That gap is worth planning around.
Better than the DEN–ONT route average.
UA 430 arrived on time 88% of the time, versus 75% across the DEN–ONT route.
Better than the United Airlines network average.
UA 430 arrived on time 88% of the time, versus 79% across the United Airlines network.
It basically never cancels.
Out of 365 scheduled flights, only 0.3% were cancelled.
The breakdown
- Mon87%(52 flights)
- Tue85%(52 flights)
- Wed87%(52 flights)
- Thu79%(52 flights)
- Fri90%(51 flights)
- Sat96%(52 flights)
- Sun93%(53 flights)
87%
May
Jun 76% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 76% | 29 |
| July 2025 | 84% | 31 |
| August 2025 | 94% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 97% | 30 |
| December 2025 | 77% | 31 |
| January 2026 | 87% | 31 |
| February 2026 | 86% | 28 |
| March 2026 | 90% | 31 |
| April 2026 | 97% | 30 |
| May 2026 | 87% | 31 |
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 364
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.