BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
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ATW→ORD

Appleton, WI (ATW) to Chicago, IL (ORD) flight delay odds

66.7% of 2,515 official scheduled ATW-to-ORD flights arrived on time; 21.0% arrived at least 30 minutes late and 4.5% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALHigher disruption
66.7%arrived on time
21.0%30+ min late
4.5%cancelled
2,515scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late13.2%all scheduled flights
120+ minutes late5.9%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+17.4 mincompleted flights

Which departure time was most reliable for ATW to ORD?

Among qualifying ATW-to-ORD departure window results, Early morning had the highest on-time rate: 79.1% of 714 flights. Evening was lowest at 50.5% across 654 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning71479.1%11.2%3.5%
Late morning48175.9%16.4%2.3%
Afternoon66362.9%25.9%3.6%
Evening65450.5%30.0%8.1%

Which weekday was most reliable for ATW to ORD?

Among qualifying ATW-to-ORD weekday results, Saturday had the highest on-time rate: 71.8% of 340 flights. Monday was lowest at 61.5% across 371 flights.

DayFlightsOn time30+ minCancelled
Monday37161.5%25.1%5.9%
Tuesday35471.5%17.8%3.7%
Wednesday34867.0%22.4%3.4%
Thursday36169.3%18.6%4.4%
Friday36964.0%20.9%4.9%
Saturday34071.8%19.1%3.5%
Sunday37262.9%22.8%5.6%

Which airline was most reliable for ATW to ORD?

Among qualifying ATW-to-ORD airline results, Envoy Air had the highest on-time rate: 74.3% of 1,177 flights. SkyWest Airlines was lowest at 60.0% across 1,338 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,33860.0%26.2%5.7%
Envoy Air1,17774.3%15.0%3.2%

Which month was most reliable for ATW to ORD?

Among qualifying ATW-to-ORD month results, September 2025 had the highest on-time rate: 79.8% of 129 flights. December 2025 was lowest at 57.2% across 159 flights.

MonthFlightsOn time30+ minCancelled
July 202527162.7%26.6%1.8%
August 202519666.8%17.9%5.1%
September 202512979.8%14.0%0.0%
October 202518169.6%19.3%0.6%
November 202517261.0%18.0%11.0%
December 202515957.2%30.8%5.0%
January 202618364.5%25.7%4.9%
February 202620672.3%20.9%0.0%
March 202626260.3%16.8%11.8%
April 202633258.7%26.8%7.8%
May 202626178.2%16.5%0.0%
June 202616378.5%13.5%3.1%

What drove ATW to ORD delay minutes?

Late aircraft was the largest recorded ATW-to-ORD delay category, accounting for 35.6% of 61,271 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.8%
Late aircraft35.6%
National airspace28.6%
Weather4.9%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.