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Flight Reliability

UA 6312 · United Airlines

Houston → Cincinnati (IAH–CVG)100% of its flights flew this route. The rest (STL–IAH) are included in these numbers.

89
Pretty Reliable
WanderNerd Reliability Score
88%
Arrive within 15 minutes
4 min early
Average arrival delay
1.1%
Cancelled
9 min early
Median arrival delay

Based on 261 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

UA 6312 arrived on time 94% of the time on Wednesdays. On Fridays: 82%.

Better than the IAH–CVG route average.

UA 6312 arrived on time 88% of the time, versus 81% across the IAH–CVG route.

Better than the United Airlines network average.

UA 6312 arrived on time 88% of the time, versus 79% across the United Airlines network.

Slipping a little lately.

UA 6312 arrived on time 91% of the time over the last three months in the data, compared with 94% in the three months before that.

The breakdown

On-time by weekday
  • Mon89%(45 flights)
  • Tue93%(27 flights)
  • Wed94%(34 flights)
  • Thu89%(45 flights)
  • Fri82%(45 flights)
  • Sat83%(18 flights)
  • Sun88%(42 flights)
On-time trend by month
89%
May

Jul 85% → May 89% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
July 202585%27
August 202576%21
September 202588%17
October 202589%27
November 202586%29
December 2025100%11
January 2026100%12
February 202683%18
March 202683%29
April 2026100%30
May 202689%28
Departures on time
91%
Diverted
0.8%
Flights flown
256
Months covered
12

Same route, other flights

Keep nerding

Based on 261 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.