BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
DSM→ORD

Des Moines, IA (DSM) to Chicago, IL (ORD) flight delay odds

70.0% of 3,403 official scheduled DSM-to-ORD flights arrived on time; 17.1% arrived at least 30 minutes late and 4.1% 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
70.0%arrived on time
17.1%30+ min late
4.1%cancelled
3,403scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.8%all scheduled flights
120+ minutes late5.5%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+18.6 mincompleted flights

Which departure time was most reliable for DSM to ORD?

Among qualifying DSM-to-ORD departure window results, Early morning had the highest on-time rate: 80.7% of 1,139 flights. Evening was lowest at 54.2% across 744 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,13980.7%9.4%3.4%
Late morning59971.8%15.5%3.2%
Afternoon91768.7%18.4%3.5%
Evening74454.2%28.5%6.5%

Which weekday was most reliable for DSM to ORD?

Among qualifying DSM-to-ORD weekday results, Tuesday had the highest on-time rate: 75.9% of 493 flights. Friday was lowest at 66.3% across 502 flights.

DayFlightsOn time30+ minCancelled
Monday51466.7%19.3%5.4%
Tuesday49375.9%14.2%2.6%
Wednesday46770.0%18.4%3.0%
Thursday49972.3%17.0%2.6%
Friday50266.3%16.1%5.6%
Saturday43772.8%15.8%4.3%
Sunday49166.4%18.9%5.1%

Which airline was most reliable for DSM to ORD?

Among qualifying DSM-to-ORD airline results, American Airlines had the highest on-time rate: 79.8% of 263 flights. SkyWest Airlines was lowest at 62.6% across 1,167 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines1,16762.6%22.9%6.1%
United Airlines94371.7%14.7%1.7%
Republic Airways56574.3%13.8%4.6%
Envoy Air46474.6%15.5%2.6%
American Airlines26379.8%9.9%5.7%
PSA Airlines10.0%100.0%0.0%

Which month was most reliable for DSM to ORD?

Among qualifying DSM-to-ORD month results, September 2025 had the highest on-time rate: 81.5% of 265 flights. December 2025 was lowest at 58.1% across 270 flights.

MonthFlightsOn time30+ minCancelled
July 202529460.9%23.1%5.8%
August 202529469.0%17.0%3.7%
September 202526581.5%12.1%0.4%
October 202529669.6%16.2%0.7%
November 202527171.2%13.7%10.7%
December 202527058.1%28.5%4.4%
January 202619769.0%19.8%3.0%
February 202622976.9%13.1%0.4%
March 202630362.7%18.5%7.6%
April 202637071.6%16.2%5.7%
May 202634679.5%11.0%1.2%
June 202626869.4%17.9%4.9%

What drove DSM to ORD delay minutes?

Late aircraft was the largest recorded DSM-to-ORD delay category, accounting for 31.1% of 84,806 BTS-attributed delay minutes during July 2025–June 2026.

Airline30.3%
Late aircraft31.1%
National airspace24.4%
Weather14.1%
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.