ORIGIN AIRPORT REPORT
COS
Colorado Springs, CO (COS) departure reliability
Of 13,266 scheduled reportable flights departing COS, 79.0% arrived on time, 12.8% arrived at least 30 minutes late, and 1.3% were cancelled during July 2025–June 2026.
Source: U.S. Bureau of Transportation Statistics · Origin-airport cohort · Updated September 16, 2026
HISTORICAL ROUTE SIGNALGenerally reliable
79.0%arrived on time
12.8%30+ min late
1.3%cancelled
13,266scheduled flights
MOST-FLOWN DIRECTIONS
ALL ROUTES →Which route from COS had the largest sample?
COS to DEN was COS's largest published route sample, with 5,038 scheduled flights and a 77.8% on-time rate during July 2025–June 2026.
COS→DENColorado Springs, CO (COS) to Denver, CO (DEN)5,038 flights analyzedGenerally reliable77.8%on timeCOS→DFWColorado Springs, CO (COS) to Dallas/Fort Worth, TX (DFW)1,934 flights analyzedVariable75.2%on timeCOS→ORDColorado Springs, CO (COS) to Chicago, IL (ORD)1,001 flights analyzedGenerally reliable72.5%on timeCOS→PHXColorado Springs, CO (COS) to Phoenix, AZ (PHX)997 flights analyzedLower disruption81.3%on timeCOS→LASColorado Springs, CO (COS) to Las Vegas, NV (LAS)859 flights analyzedGenerally reliable79.5%on timeCOS→DALColorado Springs, CO (COS) to Dallas, TX (DAL)821 flights analyzedLower disruption80.8%on timeCOS→SLCColorado Springs, CO (COS) to Salt Lake City, UT (SLC)716 flights analyzedLower disruption92.9%on timeCOS→ATLColorado Springs, CO (COS) to Atlanta, GA (ATL)584 flights analyzedGenerally reliable87.3%on timeCOS→IAHColorado Springs, CO (COS) to Houston, TX (IAH)278 flights analyzedLower disruption85.6%on time
Which airline was most reliable departing COS?
Among qualifying COS airline departure results, Delta Air Lines had the highest on-time rate: 87.6% of 653 flights. American Airlines was lowest at 71.3% across 1,071 flights.
| Airline | Flights | On time | 30+ min | Cancelled |
|---|---|---|---|---|
| SkyWest Airlines | 5,730 | 80.3% | 12.4% | 1.6% |
| Southwest Airlines | 4,500 | 78.6% | 12.6% | 0.3% |
| American Airlines | 1,071 | 71.3% | 17.6% | 3.4% |
| United Airlines | 794 | 73.4% | 17.4% | 1.3% |
| Delta Air Lines | 653 | 87.6% | 6.7% | 1.7% |
| Allegiant Air | 264 | 79.2% | 14.0% | 0.8% |
| Envoy Air | 254 | 85.0% | 7.9% | 1.6% |
Origin report, not airport-wide operations.
These figures summarize the reported scheduled passenger flights in the dataset, not every flight or every airport process.