Flight Reliability
UA 3994 · United Airlines
El Paso → Houston (ELP–IAH)88% of its flights flew this route. The rest (CHS–IAH) are included in these numbers.
97
Nerd Approved
WanderNerd Reliability Score
- 90%
- Arrive within 15 minutes
- 2 min
- Average arrival delay
- 0%
- Cancelled
- 10 min early
- Median arrival delay
Based on 249 historical flights. Data through May 2026.
What the data says
Wednesday is the weak spot.
UA 3994 arrived on time 94% of the time on Tuesdays. On Wednesdays: 83%.
A bit ahead of the ELP–IAH route.
UA 3994 arrived on time 90% of the time, versus 85% across the ELP–IAH route.
Better than the United Airlines network average.
UA 3994 arrived on time 90% of the time, versus 79% across the United Airlines network.
It basically never cancels.
Out of 249 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon91%(35 flights)
- Tue94%(35 flights)
- Wed83%(35 flights)
- Thu92%(36 flights)
- Fri92%(36 flights)
- Sat94%(35 flights)
- Sun86%(36 flights)
90%
May
Oct 94% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| October 2025 | 94% | 31 |
| November 2025 | 87% | 30 |
| December 2025 | 90% | 31 |
| January 2026 | 97% | 30 |
| February 2026 | 89% | 28 |
| March 2026 | 77% | 31 |
| April 2026 | 97% | 30 |
| May 2026 | 90% | 31 |
- Departures on time
- 91%
- Diverted
- 0.4%
- Flights flown
- 248
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 249 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.