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

Colorado Springs, CO (COS) to Salt Lake City, UT (SLC) flight delay odds

92.9% of 716 official scheduled COS-to-SLC flights arrived on time; 3.6% arrived at least 30 minutes late and 0.1% 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 SIGNALLower disruption
92.9%arrived on time
3.6%30+ min late
0.1%cancelled
716scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late2.0%all scheduled flights
120+ minutes late0.4%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival-8.3 mincompleted flights

Which departure time was most reliable for COS to SLC?

Among qualifying COS-to-SLC departure window results, Early morning had the highest on-time rate: 96.4% of 365 flights. Evening was lowest at 85.4% across 198 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36596.4%1.9%0.0%
Late morning5596.4%1.8%0.0%
Afternoon9892.9%6.1%0.0%
Evening19885.4%6.1%0.5%

Which weekday was most reliable for COS to SLC?

Among qualifying COS-to-SLC weekday results, Monday had the highest on-time rate: 95.2% of 104 flights. Sunday was lowest at 90.3% across 103 flights.

DayFlightsOn time30+ minCancelled
Monday10495.2%4.8%0.0%
Tuesday10592.4%2.9%0.0%
Wednesday10192.1%4.0%1.0%
Thursday10095.0%1.0%0.0%
Friday10191.1%4.0%0.0%
Saturday10294.1%3.9%0.0%
Sunday10390.3%4.9%0.0%

Which airline was most reliable for COS to SLC?

Only SkyWest Airlines met the COS-to-SLC airline threshold: 92.9% of 716 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines71692.9%3.6%0.1%

Which month was most reliable for COS to SLC?

Among qualifying COS-to-SLC month results, May 2026 had the highest on-time rate: 98.4% of 62 flights. July 2025 was lowest at 82.1% across 56 flights.

MonthFlightsOn time30+ minCancelled
July 20255682.1%7.1%0.0%
August 20256288.7%4.8%0.0%
September 20256091.7%1.7%0.0%
October 20256198.4%0.0%0.0%
November 20255794.7%3.5%0.0%
December 20255988.1%5.1%1.7%
January 20266190.2%8.2%0.0%
February 20265694.6%1.8%0.0%
March 20266295.2%4.8%0.0%
April 20266095.0%1.7%0.0%
May 20266298.4%1.6%0.0%
June 20266096.7%3.3%0.0%

What drove COS to SLC delay minutes?

Weather was the largest recorded COS-to-SLC delay category, accounting for 49.3% of 3,093 BTS-attributed delay minutes during July 2025–June 2026.

Airline47.1%
Late aircraft0.0%
National airspace3.6%
Weather49.3%
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.