Flight Reliability
UA 4972 · United Airlines
Washington → GSO (IAD–GSO)
88
Pretty Reliable
WanderNerd Reliability Score
- 83%
- Arrive within 15 minutes
- 5 min
- Average arrival delay
- 0.7%
- Cancelled
- 7 min early
- Median arrival delay
Based on 142 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
UA 4972 arrived on time 92% of the time on Fridays and just 77% on Wednesdays. That gap is worth planning around.
A bit ahead of the United Airlines network.
UA 4972 arrived on time 83% of the time, versus 79% across the United Airlines network.
Trending in the right direction.
UA 4972 arrived on time 89% of the time over the last three months in the data, compared with 78% in the three months before that.
The breakdown
- Mon79%(24 flights)
- Tue82%(17 flights)
- Wed77%(17 flights)
- Thu78%(23 flights)
- Fri92%(24 flights)
- Sat88%(16 flights)
- Sun85%(20 flights)
79%
Dec
Jun 81% → Dec 79% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 81% | 26 |
| July 2025 | 77% | 31 |
| August 2025 | 75% | 24 |
| September 2025 | 94% | 16 |
| October 2025 | 96% | 25 |
| December 2025 | 79% | 14 |
- Departures on time
- 86%
- Diverted
- 0%
- Flights flown
- 141
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 142 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.