Flight Reliability
UA 6351 · United Airlines
MAF → Houston (MAF–IAH)
93
Nerd Approved
WanderNerd Reliability Score
- 92%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 1.6%
- Cancelled
- 13 min early
- Median arrival delay
Based on 184 historical flights. Data through May 2026.
What the data says
Tuesdays have been rough.
UA 6351 arrived on time 100% of the time on Mondays and just 84% on Tuesdays. That gap is worth planning around.
Better than the MAF–IAH route average.
UA 6351 arrived on time 92% of the time, versus 84% across the MAF–IAH route.
Better than the United Airlines network average.
UA 6351 arrived on time 92% of the time, versus 79% across the United Airlines network.
Recent months have been rougher.
UA 6351 arrived on time 90% of the time over the last three months in the data, compared with 100% in the three months before that.
The breakdown
- Mon100%(25 flights)
- Tue84%(25 flights)
- Wed89%(27 flights)
- Thu92%(25 flights)
- Fri96%(27 flights)
- Sat85%(26 flights)
- Sun96%(26 flights)
- 3–6 AM92%(177 flights)
- 6–9 AM—(4 flights)
79%
May
Jun 83% → May 79% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 23 |
| August 2025 | 83% | 12 |
| September 2025 | 100% | 24 |
| December 2025 | 100% | 14 |
| February 2026 | 100% | 16 |
| March 2026 | 93% | 30 |
| April 2026 | 97% | 30 |
| May 2026 | 79% | 28 |
- Departures on time
- 93%
- Diverted
- 0%
- Flights flown
- 181
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 184 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.