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Flight Reliability

UA 4447 · United Airlines

AVP → Chicago (AVP–ORD)89% of its flights flew this route. The rest (ORD–DAY, ORD–MLI) are included in these numbers.

32
Bring Snacks
WanderNerd Reliability Score
58%
Arrive within 15 minutes
43 min
Average arrival delay
4.0%
Cancelled
8 min
Median arrival delay

Based on 372 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

UA 4447 departing between 9 PM–12 AM arrived on time 82% of the time, versus 58% between 3–6 PM.

Mondays have been rough.

UA 4447 arrived on time 72% of the time on Saturdays and just 54% on Mondays. That gap is worth planning around.

Well behind the AVP–ORD route.

UA 4447 arrived on time 58% of the time, versus 74% across the AVP–ORD route.

Well behind the United Airlines network.

UA 4447 arrived on time 58% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon54%(50 flights)
  • Tue55%(51 flights)
  • Wed56%(55 flights)
  • Thu55%(49 flights)
  • Fri57%(51 flights)
  • Sat72%(47 flights)
  • Sun60%(52 flights)
On-time by departure window
  • 6–9 AM—(3 flights)
  • 12–3 PM—(7 flights)
  • 3–6 PM58%(334 flights)
  • 9 PM–12 AM82%(11 flights)
On-time trend by month
60%
May

Jun 53% → May 60% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202553%30
July 202547%30
August 202576%29
September 202547%30
October 202558%31
November 202558%24
December 202537%30
January 202670%30
February 202670%27
March 202660%20
April 202665%26
May 202660%48
Departures on time
65%
Diverted
0.5%
Flights flown
355
Months covered
12

Same route, other flights

Keep nerding

Based on 372 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.