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Flight Reliability

UA 4542 · United Airlines

Chicago → Little Rock (ORD–LIT)

48
Bring Snacks
WanderNerd Reliability Score
65%
Arrive within 15 minutes
31 min
Average arrival delay
3.5%
Cancelled
2 min early
Median arrival delay

Based on 345 historical flights. Data through May 2026.

What the data says

Friday is doing you no favors.

UA 4542 arrived on time 77% of the time on Mondays and just 57% on Fridays. That gap is worth planning around.

Lagging the ORD–LIT route.

UA 4542 arrived on time 65% of the time, versus 73% across the ORD–LIT route.

Lagging the United Airlines network.

UA 4542 arrived on time 65% of the time, versus 79% across the United Airlines network.

Keep a backup plan handy.

UA 4542 was cancelled 3.5% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon77%(47 flights)
  • Tue59%(44 flights)
  • Wed61%(46 flights)
  • Thu59%(51 flights)
  • Fri57%(49 flights)
  • Sat72%(46 flights)
  • Sun70%(50 flights)
On-time by departure window
  • 6–9 PM64%(325 flights)
  • 9 PM–12 AM—(8 flights)
On-time trend by month
70%
May

Jun 60% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202560%30
July 202560%30
August 202563%30
September 202583%30
October 202574%31
November 202567%27
December 202577%30
January 202650%18
February 202652%23
March 202648%27
April 202663%27
May 202670%30
Departures on time
65%
Diverted
0%
Flights flown
333
Months covered
12

Same route, other flights

Keep nerding

Based on 345 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.