Flight Reliability
UA 259 · United Airlines
Denver → Orlando (DEN–MCO)86% of its flights flew this route. The rest (SFO–DEN, SAN–SFO) are included in these numbers.
82
Pretty Reliable
WanderNerd Reliability Score
- 77%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0.5%
- Cancelled
- 5 min early
- Median arrival delay
Based on 421 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
UA 259 departing between 9 AM–12 PM arrived on time 95% of the time, versus 73% between 3–6 PM.
Skip Thursday if you can.
UA 259 arrived on time 83% of the time on Mondays. On Thursdays: 72%.
The breakdown
- Mon83%(58 flights)
- Tue75%(56 flights)
- Wed76%(59 flights)
- Thu72%(61 flights)
- Fri73%(62 flights)
- Sat77%(62 flights)
- Sun82%(60 flights)
- 9 AM–12 PM95%(21 flights)
- 12–3 PM81%(36 flights)
- 3–6 PM73%(292 flights)
- 6–9 PM86%(69 flights)
71%
May
Jun 40% → May 71% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 40% | 30 |
| July 2025 | 58% | 31 |
| August 2025 | 55% | 31 |
| September 2025 | 73% | 30 |
| October 2025 | 90% | 29 |
| November 2025 | 83% | 30 |
| December 2025 | 84% | 31 |
| January 2026 | 87% | 31 |
| February 2026 | 86% | 28 |
| March 2026 | 88% | 75 |
| April 2026 | 93% | 30 |
| May 2026 | 71% | 42 |
- Departures on time
- 80%
- Diverted
- 0.2%
- Flights flown
- 418
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 421 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.