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Flight Reliability

UA 4966 · United Airlines

SGF → Houston (SGF–IAH)92% of its flights flew this route. The rest (LBB–IAH, IAH–LBB) are included in these numbers.

91
Nerd Approved
WanderNerd Reliability Score
86%
Arrive within 15 minutes
7 min
Average arrival delay
0.7%
Cancelled
14 min early
Median arrival delay

Based on 152 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 9 AM–12 PM arrived on time 88% of the time, against 84% between 6–9 AM.

Saturday is the weak spot.

UA 4966 arrived on time 93% of the time on Wednesdays. On Saturdays: 79%.

A bit ahead of the SGF–IAH route.

UA 4966 arrived on time 86% of the time, versus 81% across the SGF–IAH route.

Better than the United Airlines network average.

UA 4966 arrived on time 86% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon81%(21 flights)
  • Tue87%(23 flights)
  • Wed93%(15 flights)
  • Thu91%(21 flights)
  • Fri88%(24 flights)
  • Sat79%(24 flights)
  • Sun87%(23 flights)
On-time by departure window
  • 6–9 AM84%(75 flights)
  • 9 AM–12 PM88%(75 flights)
  • 3–6 PM—(1 flights)
On-time trend by month
80%
May

Dec 84% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
December 202584%25
January 202680%30
February 202692%26
March 202696%25
April 202684%25
May 202680%20
Departures on time
83%
Diverted
0%
Flights flown
151
Months covered
6

Same route, other flights

Keep nerding

Based on 152 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.