Flight Reliability
UA 4348 · United Airlines
JAN → Houston (JAN–IAH)87% of its flights flew this route. The rest (PVD–IAD, OKC–IAH) are included in these numbers.
73
Usually Fine
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 19 min
- Average arrival delay
- 2.2%
- Cancelled
- 7 min early
- Median arrival delay
Based on 317 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
UA 4348 departing between 6–9 PM arrived on time 97% of the time, versus 76% between 3–6 PM.
Saturday is the weak spot.
UA 4348 arrived on time 83% of the time on Tuesdays. On Saturdays: 72%.
Recent months have been rougher.
UA 4348 arrived on time 70% of the time over the last three months in the data, compared with 86% in the three months before that.
The breakdown
- Mon82%(45 flights)
- Tue83%(46 flights)
- Wed76%(45 flights)
- Thu77%(48 flights)
- Fri76%(46 flights)
- Sat72%(36 flights)
- Sun80%(44 flights)
- 9 AM–12 PM—(7 flights)
- 3–6 PM76%(271 flights)
- 6–9 PM97%(32 flights)
76%
May
Jun 59% → May 76% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 59% | 27 |
| July 2025 | 68% | 28 |
| August 2025 | 84% | 31 |
| September 2025 | 87% | 30 |
| October 2025 | 97% | 29 |
| December 2025 | 79% | 28 |
| January 2026 | 89% | 27 |
| February 2026 | 91% | 23 |
| March 2026 | 79% | 29 |
| April 2026 | 53% | 30 |
| May 2026 | 76% | 25 |
- Departures on time
- 81%
- Diverted
- 0%
- Flights flown
- 310
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 317 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.