Flight Reliability
UA 4929 · United Airlines
Houston → BRO (IAH–BRO)87% of its flights flew this route. The rest (LBB–IAH) are included in these numbers.
87
Pretty Reliable
WanderNerd Reliability Score
- 85%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 0.8%
- Cancelled
- 13 min early
- Median arrival delay
Based on 251 historical flights. Data through May 2026.
What the data says
The 12–3 PM departure wins.
UA 4929 departing between 12–3 PM arrived on time 87% of the time, versus 76% between 3–6 PM.
Skip Thursday if you can.
UA 4929 arrived on time 90% of the time on Tuesdays. On Thursdays: 78%.
A bit ahead of the United Airlines network.
UA 4929 arrived on time 85% of the time, versus 79% across the United Airlines network.
The breakdown
- Mon88%(40 flights)
- Tue90%(30 flights)
- Wed83%(30 flights)
- Thu78%(41 flights)
- Fri88%(40 flights)
- Sat90%(30 flights)
- Sun83%(36 flights)
- 12–3 PM87%(214 flights)
- 3–6 PM76%(33 flights)
77%
May
Sep 94% → May 77% on time
| Month | On-time percentage | Flights |
|---|---|---|
| September 2025 | 94% | 16 |
| October 2025 | 77% | 17 |
| November 2025 | 89% | 27 |
| December 2025 | 77% | 31 |
| January 2026 | 87% | 31 |
| February 2026 | 96% | 27 |
| March 2026 | 90% | 31 |
| April 2026 | 90% | 30 |
| May 2026 | 77% | 31 |
- Departures on time
- 86%
- Diverted
- 0.8%
- Flights flown
- 247
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 251 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.