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

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

Historically, 70.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 3,403 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 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%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.