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

Colorado Springs, CO (COS) to Denver, CO (DEN) flight delay odds

Historically, 77.8% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 5,038 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
77.8%arrived on time
13.5%30+ min late
1.3%cancelled
5,038scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.8%all scheduled flights
120+ minutes late3.3%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+5.4 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 morning1,75687.3%6.9%0.7%
Late morning1,28481.1%11.1%0.9%
Afternoon1,20473.7%16.9%1.3%
Evening79457.6%26.6%3.5%

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
Monday72376.9%13.4%1.2%
Tuesday69479.7%11.1%0.9%
Wednesday70777.7%14.6%0.8%
Thursday72076.2%15.0%1.1%
Friday72773.9%16.6%2.2%
Saturday71579.7%12.3%1.5%
Sunday75280.3%11.3%1.5%

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 Airlines3,28279.9%12.1%1.7%
Southwest Airlines1,14274.7%14.5%0.4%
United Airlines61472.0%18.9%1.3%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202546661.2%23.8%2.8%
August 202546667.0%21.7%0.4%
September 202544380.4%11.5%0.2%
October 202545079.6%12.9%0.0%
November 202542679.1%7.0%8.2%
December 202544177.1%14.3%1.1%
January 202638982.3%9.0%1.3%
February 202634684.4%11.3%0.0%
March 202638879.4%13.1%1.0%
April 202636284.8%9.7%0.0%
May 202642685.0%10.1%0.2%
June 202643578.4%14.3%0.2%

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 aircraft29.4%
National airspace32.6%
Weather7.7%
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.