Flight Reliability
UA 4957 · United Airlines
SHV → Houston (SHV–IAH)
67
Usually Fine
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 5.6%
- Cancelled
- 10 min early
- Median arrival delay
Based on 72 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
UA 4957 arrived on time 82% of the time on Sundays and just 64% on Mondays. That gap is worth planning around.
The breakdown
- Mon64%(11 flights)
- Tue—(9 flights)
- Wed—(9 flights)
- Thu70%(10 flights)
- Fri—(9 flights)
- Sat—(9 flights)
- Sun82%(11 flights)
- Departures on time
- 85%
- Diverted
- 0%
- Flights flown
- 68
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 72 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.