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Flight Reliability

UA 4315 · United Airlines

Houston → Huntsville (IAH–HSV)

92
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
1 min early
Average arrival delay
0.6%
Cancelled
12 min early
Median arrival delay

Based on 354 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

UA 4315 arrived on time 92% of the time on Tuesdays. On Fridays: 83%.

Better than the IAH–HSV route average.

UA 4315 arrived on time 88% of the time, versus 80% across the IAH–HSV route.

Better than the United Airlines network average.

UA 4315 arrived on time 88% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon86%(51 flights)
  • Tue92%(48 flights)
  • Wed88%(48 flights)
  • Thu90%(52 flights)
  • Fri83%(52 flights)
  • Sat85%(48 flights)
  • Sun89%(52 flights)
On-time trend by month
87%
May

Jun 72% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202572%29
July 202587%31
August 202581%31
September 202597%30
October 202597%30
November 202593%27
December 202584%31
January 202687%30
February 202691%22
March 202686%29
April 202690%30
May 202687%31
Departures on time
89%
Diverted
0.3%
Flights flown
351
Months covered
12

Same route, other flights

Keep nerding

Based on 354 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.