Flight Reliability
UA 4971 · United Airlines
Houston → BTR (IAH–BTR)80% of its flights flew this route. The rest (IAH–HSV) are included in these numbers.
68
Usually Fine
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 29 min
- Average arrival delay
- 2.3%
- Cancelled
- 9 min early
- Median arrival delay
Based on 128 historical flights. Data through May 2026.
What the data says
The late departure is the smart one here.
UA 4971 departing between 6–9 PM arrived on time 80% of the time, versus 71% between 12–3 PM.
Sunday scaries are real for this one.
UA 4971 arrived on time 88% of the time on Saturdays and just 63% on Sundays. That gap is worth planning around.
A bit behind the IAH–BTR route.
UA 4971 arrived on time 78% of the time, versus 82% across the IAH–BTR route.
The breakdown
- Mon83%(18 flights)
- Tue78%(18 flights)
- Wed85%(20 flights)
- Thu77%(17 flights)
- Fri77%(17 flights)
- Sat88%(16 flights)
- Sun63%(19 flights)
- 12–3 PM71%(24 flights)
- 6–9 PM80%(101 flights)
93%
Dec
Jun 68% → Dec 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 68% | 28 |
| July 2025 | 67% | 30 |
| August 2025 | 76% | 29 |
| September 2025 | 100% | 24 |
| December 2025 | 93% | 14 |
- Departures on time
- 77%
- Diverted
- 0%
- Flights flown
- 125
- Months covered
- 5
Same route, other flights
Keep nerding
Based on 128 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.