Flight Reliability
UA 4332 · United Airlines
ROA → Washington (ROA–IAD)88% of its flights flew this route. The rest (CAE–IAD, IAD–RIC) are included in these numbers.
- 86%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 2.7%
- Cancelled
- 10 min early
- Median arrival delay
Based on 297 historical flights. Data through May 2026.
What the data says
Morning-you made the right choice.
UA 4332 departing between 9 AM–12 PM arrived on time 89% of the time, versus 57% between 6–9 PM.
Thursdays have been rough.
UA 4332 arrived on time 97% of the time on Tuesdays and just 80% on Thursdays. That gap is worth planning around.
Better than the United Airlines network average.
UA 4332 arrived on time 86% of the time, versus 79% across the United Airlines network.
Ticking up lately.
UA 4332 arrived on time 92% of the time over the last three months in the data, compared with 87% in the three months before that.
The breakdown
- Mon85%(46 flights)
- Tue97%(39 flights)
- Wed94%(35 flights)
- Thu80%(49 flights)
- Fri82%(44 flights)
- Sat83%(29 flights)
- Sun85%(47 flights)
- 6–9 AM—(5 flights)
- 9 AM–12 PM89%(254 flights)
- 6–9 PM57%(30 flights)
Jun 79% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 79% | 29 |
| July 2025 | 57% | 14 |
| August 2025 | 80% | 15 |
| October 2025 | 100% | 30 |
| November 2025 | 74% | 19 |
| December 2025 | 77% | 30 |
| January 2026 | 96% | 28 |
| February 2026 | 89% | 28 |
| March 2026 | 100% | 31 |
| April 2026 | 92% | 26 |
| May 2026 | 84% | 31 |
- Departures on time
- 86%
- Diverted
- 0%
- Flights flown
- 289
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 297 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.