Flight Reliability
UA 5455 · United Airlines
PIA → Denver (PIA–DEN)100% of its flights flew this route. The rest (ORD–BHM) are included in these numbers.
- 71%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 1.7%
- Cancelled
- 1 min
- Median arrival delay
Based on 343 historical flights. Data through May 2026.
What the data says
The 6–9 AM departure wins.
UA 5455 departing between 6–9 AM arrived on time 79% of the time, versus 49% between 9 AM–12 PM.
Friday is doing you no favors.
UA 5455 arrived on time 82% of the time on Sundays and just 59% on Fridays. That gap is worth planning around.
Lagging the United Airlines network.
UA 5455 arrived on time 71% of the time, versus 79% across the United Airlines network.
Trending in the right direction.
UA 5455 arrived on time 69% of the time over the last three months in the data, compared with 51% in the three months before that.
The breakdown
- Mon67%(49 flights)
- Tue70%(46 flights)
- Wed72%(47 flights)
- Thu71%(49 flights)
- Fri59%(49 flights)
- Sat72%(47 flights)
- Sun82%(49 flights)
- 6–9 AM79%(240 flights)
- 9 AM–12 PM49%(96 flights)
Jun 80% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 30 |
| July 2025 | 77% | 31 |
| August 2025 | 71% | 31 |
| October 2025 | 87% | 31 |
| November 2025 | 90% | 29 |
| December 2025 | 47% | 30 |
| January 2026 | 65% | 31 |
| February 2026 | 41% | 27 |
| March 2026 | 21% | 28 |
| April 2026 | 97% | 29 |
| May 2026 | 90% | 31 |
- Departures on time
- 83%
- Diverted
- 0.3%
- Flights flown
- 336
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 343 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.