Flight Reliability
UA 6310 · United Airlines
Louisville → Houston (SDF–IAH)
80
Pretty Reliable
WanderNerd Reliability Score
- 77%
- Arrive within 15 minutes
- 11 min
- Average arrival delay
- 0.3%
- Cancelled
- 9 min early
- Median arrival delay
Based on 340 historical flights. Data through May 2026.
What the data says
Tuesday has been the better bet.
A small edge: 78% on time on Tuesdays against 74% on Mondays.
A bit behind the SDF–IAH route.
UA 6310 arrived on time 77% of the time, versus 83% across the SDF–IAH route.
It basically never cancels.
Out of 340 scheduled flights, only 0.3% were cancelled.
Recent months have been rougher.
UA 6310 arrived on time 76% of the time over the last three months in the data, compared with 85% in the three months before that.
The breakdown
- Mon74%(50 flights)
- Tue78%(46 flights)
- Wed78%(49 flights)
- Thu75%(48 flights)
- Fri78%(49 flights)
- Sat76%(46 flights)
- Sun78%(49 flights)
63%
May
Jun 59% → May 63% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 59% | 29 |
| July 2025 | 65% | 31 |
| August 2025 | 74% | 31 |
| September 2025 | 77% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 83% | 29 |
| December 2025 | 93% | 15 |
| January 2026 | 67% | 30 |
| February 2026 | 96% | 25 |
| March 2026 | 82% | 27 |
| April 2026 | 83% | 29 |
| May 2026 | 63% | 30 |
- Departures on time
- 77%
- Diverted
- 0.6%
- Flights flown
- 337
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 340 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.