Flight Reliability
UA 4824 · United Airlines
Dayton → Washington (DAY–IAD)
72
Usually Fine
WanderNerd Reliability Score
- 79%
- Arrive within 15 minutes
- 22 min
- Average arrival delay
- 1.6%
- Cancelled
- 4 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
UA 4824 arrived on time 86% of the time on Thursdays. On Sundays: 75%.
Trending in the right direction.
UA 4824 arrived on time 87% of the time over the last three months in the data, compared with 73% in the three months before that.
The breakdown
- Mon77%(51 flights)
- Tue84%(51 flights)
- Wed75%(52 flights)
- Thu86%(49 flights)
- Fri77%(51 flights)
- Sat79%(52 flights)
- Sun75%(51 flights)
81%
May
Jun 71% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 71% | 28 |
| July 2025 | 68% | 28 |
| August 2025 | 87% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 74% | 31 |
| November 2025 | 76% | 29 |
| December 2025 | 58% | 31 |
| January 2026 | 76% | 29 |
| February 2026 | 86% | 28 |
| March 2026 | 94% | 31 |
| April 2026 | 87% | 30 |
| May 2026 | 81% | 31 |
- Departures on time
- 80%
- Diverted
- 0.5%
- Flights flown
- 357
- 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.