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Flight Reliability

UA 5437 · United Airlines

Chicago → DLH (ORD–DLH)88% of its flights flew this route. The rest (TUS–ORD, DLH–ORD) are included in these numbers.

63
A Little Dicey
WanderNerd Reliability Score
69%
Arrive within 15 minutes
18 min
Average arrival delay
1.9%
Cancelled
1 min
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

UA 5437 departing between 6–9 PM arrived on time 91% of the time, versus 67% between 12–3 PM.

Wednesday is the weak spot.

UA 5437 arrived on time 75% of the time on Thursdays. On Wednesdays: 65%.

A bit ahead of the ORD–DLH route.

UA 5437 arrived on time 69% of the time, versus 66% across the ORD–DLH route.

Lagging the United Airlines network.

UA 5437 arrived on time 69% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon66%(50 flights)
  • Tue67%(52 flights)
  • Wed65%(51 flights)
  • Thu75%(52 flights)
  • Fri68%(50 flights)
  • Sat73%(51 flights)
  • Sun68%(50 flights)
On-time by departure window
  • 6–9 AM75%(32 flights)
  • 12–3 PM67%(313 flights)
  • 6–9 PM91%(11 flights)
On-time trend by month
84%
May

Jun 86% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202586%29
July 202577%30
August 202570%30
September 202583%30
October 202577%31
November 202559%29
December 202541%29
January 202653%30
February 202659%27
March 202657%30
April 202677%30
May 202684%31
Departures on time
76%
Diverted
0.5%
Flights flown
356
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.