Flight Reliability
UA 4904 · United Airlines
Houston → LRD (IAH–LRD)98% of its flights flew this route. The rest (IAH–CRP, IAH–MAF) are included in these numbers.
83
Pretty Reliable
WanderNerd Reliability Score
- 80%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.2%
- Cancelled
- 15 min early
- Median arrival delay
Based on 173 historical flights. Data through May 2026.
What the data says
Wednesdays have been rough.
UA 4904 arrived on time 93% of the time on Saturdays and just 75% on Wednesdays. That gap is worth planning around.
A bit behind the IAH–LRD route.
UA 4904 arrived on time 80% of the time, versus 84% across the IAH–LRD route.
Recent months have been rougher.
UA 4904 arrived on time 77% of the time over the last three months in the data, compared with 84% in the three months before that.
The breakdown
- Mon76%(29 flights)
- Tue78%(23 flights)
- Wed75%(28 flights)
- Thu86%(29 flights)
- Fri80%(30 flights)
- Sat93%(15 flights)
- Sun77%(17 flights)
- 12–3 PM81%(169 flights)
- 6–9 PM—(1 flights)
- 9 PM–12 AM—(1 flights)
73%
May
Jun 75% → May 73% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 75% | 20 |
| July 2025 | 82% | 22 |
| August 2025 | 83% | 12 |
| January 2026 | 77% | 17 |
| February 2026 | 92% | 25 |
| March 2026 | 84% | 31 |
| April 2026 | 73% | 30 |
| May 2026 | 73% | 11 |
- Departures on time
- 81%
- Diverted
- 0%
- Flights flown
- 171
- Months covered
- 10
Same route, other flights
Keep nerding
Based on 173 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.