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

Denver, CO (DEN) to Des Moines, IA (DSM) flight delay odds

Historically, 79.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,329 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
79.3%arrived on time
13.6%30+ min late
0.6%cancelled
2,329scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.3%all scheduled flights
120+ minutes late2.8%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+5.7 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 morning16396.3%1.8%0.0%
Late morning63287.0%6.6%0.5%
Afternoon48883.8%11.1%0.2%
Evening94269.2%21.2%0.6%
Night10475.0%16.3%2.9%

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
Monday36376.3%15.4%0.3%
Tuesday32682.2%12.6%0.6%
Wednesday32785.6%9.2%0.0%
Thursday32877.1%14.9%0.3%
Friday36676.5%16.7%0.5%
Saturday29878.9%12.4%1.3%
Sunday32178.8%13.1%0.9%

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 Airlines93687.1%7.9%1.1%
United Airlines68178.7%14.4%0.1%
Southwest Airlines55966.7%22.2%0.4%
Frontier Airlines15379.7%13.1%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202522366.8%26.0%0.4%
August 202522774.0%20.3%0.4%
September 202522384.3%11.7%0.0%
October 202519888.4%6.1%0.0%
November 202516482.9%7.3%2.4%
December 202516782.6%12.0%0.0%
January 202616282.1%10.5%0.6%
February 202614975.8%12.8%1.3%
March 202619275.5%13.5%2.1%
April 202618888.3%3.7%0.0%
May 202621779.3%12.4%0.0%
June 202621974.4%21.0%0.0%

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.

Airline36.0%
Late aircraft49.8%
National airspace11.1%
Weather3.1%
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.