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Flight Reliability

UA 4568 · United Airlines

Chicago → SCE (ORD–SCE)89% of its flights flew this route. The rest (PWM–IAD, ORD–CHA) are included in these numbers.

77
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
14 min
Average arrival delay
0.9%
Cancelled
9 min early
Median arrival delay

Based on 347 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

UA 4568 departing between 9 AM–12 PM arrived on time 76% of the time, versus 55% between 12–3 PM.

Saturdays have been rough.

UA 4568 arrived on time 84% of the time on Sundays and just 66% on Saturdays. That gap is worth planning around.

A bit ahead of the ORD–SCE route.

UA 4568 arrived on time 74% of the time, versus 69% across the ORD–SCE route.

A bit behind the United Airlines network.

UA 4568 arrived on time 74% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon73%(52 flights)
  • Tue79%(43 flights)
  • Wed67%(46 flights)
  • Thu71%(52 flights)
  • Fri78%(51 flights)
  • Sat66%(50 flights)
  • Sun84%(50 flights)
On-time by departure window
  • 9 AM–12 PM76%(311 flights)
  • 12–3 PM55%(33 flights)
On-time trend by month
68%
May

Jun 80% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%30
July 202584%31
August 202590%30
September 202583%29
October 202577%31
November 202573%30
December 202546%28
January 202664%22
February 202679%24
March 202674%31
April 202667%30
May 202668%28
Departures on time
78%
Diverted
0%
Flights flown
344
Months covered
12

Same route, other flights

Keep nerding

Based on 347 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.