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Flight Reliability

UA 4852 · United Airlines

SGF → Houston (SGF–IAH)96% of its flights flew this route. The rest (IAH–BTR, PHL–IAD) are included in these numbers.

88
Pretty Reliable
WanderNerd Reliability Score
87%
Arrive within 15 minutes
4 min early
Average arrival delay
0.7%
Cancelled
11 min early
Median arrival delay

Based on 284 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

UA 4852 arrived on time 96% of the time on Tuesdays and just 81% on Fridays. That gap is worth planning around.

A bit ahead of the SGF–IAH route.

UA 4852 arrived on time 87% of the time, versus 81% across the SGF–IAH route.

Better than the United Airlines network average.

UA 4852 arrived on time 87% of the time, versus 79% across the United Airlines network.

Recent months have been rougher.

UA 4852 arrived on time 81% of the time over the last three months in the data, compared with 88% in the three months before that.

The breakdown

On-time by weekday
  • Mon83%(40 flights)
  • Tue96%(44 flights)
  • Wed89%(28 flights)
  • Thu93%(41 flights)
  • Fri81%(41 flights)
  • Sat82%(45 flights)
  • Sun88%(40 flights)
On-time by departure window
  • 6–9 AM87%(268 flights)
  • 12–3 PM—(5 flights)
  • 3–6 PM—(4 flights)
  • 6–9 PM—(2 flights)
On-time trend by month
63%
May

Aug 100% → May 63% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
August 2025100%12
September 202585%26
October 202597%31
November 202593%30
December 202584%31
January 202689%26
February 202691%23
March 202690%30
April 202689%35
May 202663%30
Departures on time
90%
Diverted
1.1%
Flights flown
279
Months covered
12

Same route, other flights

Keep nerding

Based on 284 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.