Flight Reliability
UA 4954 · United Airlines
ITH → Washington (ITH–IAD)
66
Usually Fine
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 24 min
- Average arrival delay
- 3.8%
- Cancelled
- 15 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
UA 4954 arrived on time 94% of the time on Tuesdays and just 69% on Sundays. That gap is worth planning around.
A bit ahead of the United Airlines network.
UA 4954 arrived on time 82% of the time, versus 79% across the United Airlines network.
Keep a backup plan handy.
UA 4954 was cancelled 3.8% of the time. Typical for U.S. flights is around 1–2%.
Ticking up lately.
UA 4954 arrived on time 84% of the time over the last three months in the data, compared with 79% in the three months before that.
The breakdown
- Mon84%(50 flights)
- Tue94%(51 flights)
- Wed86%(44 flights)
- Thu78%(51 flights)
- Fri78%(51 flights)
- Sat84%(51 flights)
- Sun69%(51 flights)
96%
May
Jun 67% → May 96% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 67% | 30 |
| July 2025 | 71% | 28 |
| August 2025 | 83% | 30 |
| September 2025 | 93% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 93% | 27 |
| December 2025 | 87% | 30 |
| January 2026 | 87% | 30 |
| February 2026 | 63% | 27 |
| March 2026 | 79% | 28 |
| April 2026 | 77% | 30 |
| May 2026 | 96% | 28 |
- Departures on time
- 83%
- Diverted
- 0.3%
- Flights flown
- 349
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 364 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.