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Flight Reliability

UA 5823 · United Airlines

Oklahoma City → Chicago (OKC–ORD)97% of its flights flew this route. The rest (ORD–SCE, ORD–ATW) are included in these numbers.

79
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
9 min
Average arrival delay
1.7%
Cancelled
7 min early
Median arrival delay

Based on 354 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

UA 5823 departing between 6–9 AM arrived on time 82% of the time, versus 64% between 12–3 PM.

Sunday scaries are real for this one.

UA 5823 arrived on time 90% of the time on Thursdays and just 67% on Sundays. That gap is worth planning around.

A bit ahead of the OKC–ORD route.

UA 5823 arrived on time 78% of the time, versus 75% across the OKC–ORD route.

Recent months have been rougher.

UA 5823 arrived on time 77% of the time over the last three months in the data, compared with 85% in the three months before that.

The breakdown

On-time by weekday
  • Mon72%(50 flights)
  • Tue82%(50 flights)
  • Wed84%(51 flights)
  • Thu90%(49 flights)
  • Fri74%(50 flights)
  • Sat78%(49 flights)
  • Sun67%(49 flights)
On-time by departure window
  • 6–9 AM82%(11 flights)
  • 9 AM–12 PM79%(326 flights)
  • 12–3 PM64%(11 flights)
On-time trend by month
71%
May

Jun 73% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202587%30
August 202571%31
September 202573%30
October 202590%31
November 202564%28
December 202588%16
January 202683%23
February 202686%28
March 202677%30
April 202683%29
May 202671%42
Departures on time
85%
Diverted
0%
Flights flown
348
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.