COS to DEN flight delays & on-time performance
Nonstop flights from City of Colorado Springs Municipal Airport to Denver International Airport · 73 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at COS or DEN right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Colorado Springs (COS) to Denver (DEN) arrived on time 81% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.1% were cancelled, and 7% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (83% on time); United Airlines was the least (74%).
- Departures scheduled around 5am did best (92% on time); around 5pm did worst (60%).
- Sunday was the most reliable day to fly (83% on time) and Friday the least (76%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (33%).
Which airline is most on time from COS to DEN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 83% | 1.5% | 14 min | 6.8% | 3,300 |
| Southwest Airlines | 77% | 0.3% | 14 min | 7.1% | 1,129 |
| United Airlines | 74% | 0.5% | 20 min | 9.5% | 579 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am92%284 flights
- 6am90%534 flights
- 7am91%636 flights
- 8am85%328 flights
- 9am85%406 flights
- 10am87%351 flights
- 11am81%517 flights
- 12pm86%232 flights
- 1pm83%366 flights
- 3pm63%409 flights
- 4pm65%137 flights
- 5pm60%472 flights
- 6pm69%272 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%1.0% cancelled
- Tuesday82%0.6% cancelled
- Wednesday82%1.0% cancelled
- Thursday80%0.6% cancelled
- Friday76%2.2% cancelled
- Saturday82%1.3% cancelled
- Sunday83%1.2% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion32%
- Late-arriving aircraft27%
- Extreme weather8%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion64%
- Extreme weather32%
- Airline (crew, maintenance, cleaning, fueling)4%
- Security0%
COS to DEN: common questions
- How often are COS to DEN flights on time?
- 81% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Colorado Springs to Denver cancelled?
- 1.1% of scheduled flights were cancelled (56 of 5,008).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 70 min behind schedule on average, and 7.2% of flights were an hour or more late.
- How long is taxi time at COS?
- Flights on this route spent 25 min taxiing from the gate to takeoff on average.
Related routes
Return trip: DEN to COS — 77% on time
More flights from Colorado Springs
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: COS → DEN, nonstop flights by US airlines that report to the DOT. How we calculate this.