Flight Reliability
UA 4913 · United Airlines
Knoxville → Houston (TYS–IAH)
84
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.4%
- Cancelled
- 9 min early
- Median arrival delay
Based on 352 historical flights. Data through May 2026.
What the data says
Monday is the weak spot.
UA 4913 arrived on time 92% of the time on Wednesdays. On Mondays: 78%.
A bit ahead of the United Airlines network.
UA 4913 arrived on time 84% of the time, versus 79% across the United Airlines network.
Trending in the right direction.
UA 4913 arrived on time 83% of the time over the last three months in the data, compared with 76% in the three months before that.
The breakdown
- Mon78%(49 flights)
- Tue88%(51 flights)
- Wed92%(49 flights)
- Thu81%(48 flights)
- Fri84%(50 flights)
- Sat85%(48 flights)
- Sun80%(50 flights)
80%
May
Jun 83% → May 80% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 93% | 30 |
| August 2025 | 87% | 31 |
| September 2025 | 100% | 29 |
| October 2025 | 87% | 31 |
| November 2025 | 80% | 30 |
| December 2025 | 63% | 30 |
| January 2026 | 75% | 28 |
| February 2026 | 89% | 27 |
| March 2026 | 83% | 29 |
| April 2026 | 87% | 30 |
| May 2026 | 80% | 20 |
- Departures on time
- 89%
- Diverted
- 0.6%
- Flights flown
- 345
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 352 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.