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Flight Reliability

UA 5819 · United Airlines

Chicago → DLH (ORD–DLH)91% of its flights flew this route. The rest (ORD–DAY, ORD–PVD) are included in these numbers.

62
A Little Dicey
WanderNerd Reliability Score
72%
Arrive within 15 minutes
12 min
Average arrival delay
3.5%
Cancelled
1 min early
Median arrival delay

Based on 315 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

UA 5819 departing between 9 AM–12 PM arrived on time 83% of the time, versus 48% between 6–9 PM.

Friday is doing you no favors.

UA 5819 arrived on time 79% of the time on Mondays and just 59% on Fridays. That gap is worth planning around.

A bit ahead of the ORD–DLH route.

UA 5819 arrived on time 72% of the time, versus 66% across the ORD–DLH route.

Lagging the United Airlines network.

UA 5819 arrived on time 72% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon79%(42 flights)
  • Tue78%(45 flights)
  • Wed71%(42 flights)
  • Thu73%(45 flights)
  • Fri59%(46 flights)
  • Sat75%(36 flights)
  • Sun67%(46 flights)
On-time by departure window
  • 6–9 AM70%(200 flights)
  • 9 AM–12 PM83%(77 flights)
  • 6–9 PM48%(25 flights)
On-time trend by month
61%
May

Jun 89% → May 61% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202589%28
July 202587%31
August 202568%31
September 202564%28
October 202587%31
November 202564%28
January 202656%16
February 202658%24
March 202672%29
April 202668%25
May 202661%31
Departures on time
80%
Diverted
0.6%
Flights flown
302
Months covered
11

Same route, other flights

Keep nerding

Based on 315 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.