State · CO · 2020–2025 BTS data
Colorado
According to PlainFlights' state traffic ranking (BTS On-Time Performance total flights), Colorado ranks #6 of 53 US states by total flight operations (most flights = #1).
Data updated 2026-06-13
- 79%
- On-time
- +0 pts
- vs US avg
- 73 min
- Delay when late
- 1.09%
- Cancelled
- #6 of 53
- Corpus placement
State reliability verdict
According to U.S. DOT BTS data, Colorado is a busy-book state: 3,708,491 operations at 11 airports run 79% on-time, 0 pts above the 79% U.S. average. Among tracked airports, ALS leads locally at 89% on-time.
- 79%
- statewide on-time
- +0 pts
- vs US average
- 11
- airports tracked
- 1.09%
- cancellation rate
On-time means arrived less than 15 minutes after schedule. Figures are historical BTS averages, not a guarantee for any single flight.
Colorado vs all states by total flight operations
Where this state's BTS On-Time Performance flight count sits among every state with tracked operations (traffic density, not on-time quality)
3,708,491 Top 11% more flights than 89% of 53 states
States, banded by total BTS-tracked flights
Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source BTS On-Time Performance · 2026-06-13
Airports in Colorado
Colorado airports ranked by on-time rate
11 BTS-tracked airports, led by ALS at 89%
On-time rate by airport
- ALS
Alamosa, CO: 89% on-time, 1,982 flights
89 %
- PUB
Pueblo, CO: 88.8% on-time, 3,776 flights
89 %
- GJT
Grand Junction, CO: 85.1% on-time, 47,063 flights
85 %
- DRO
Durango, CO: 83.4% on-time, 42,722 flights
83 %
- GUC
Gunnison, CO: 82.9% on-time, 9,819 flights
83 %
- MTJ
Montrose/Delta, CO: 81.3% on-time, 32,233 flights
81 %
- COS
Colorado Springs, CO: 80.4% on-time, 134,711 flights
80 %
- HDN
Hayden, CO: 79.7% on-time, 27,069 flights
80 %
- DEN
Denver, CO: 78.9% on-time, 3,293,040 flights
79 %
- EGE
Eagle, CO: 78% on-time, 37,271 flights
78 %
- ASE
Aspen, CO: 73.5% on-time, 78,805 flights
74 %
What this shows Airports here range from 73.5% to 89% on-time.
| Code | Airport | City | Flights | On-Time | Avg Delay (when late) |
|---|---|---|---|---|---|
| DEN | Denver, CO | Denver | 3,293,040 | 78.9% | 70.9 min |
| COS | Colorado Springs, CO | Colorado Springs | 134,711 | 80.4% | 75.0 min |
| ASE | Aspen, CO | Aspen | 78,805 | 73.5% | 97.1 min |
| GJT | Grand Junction, CO | Grand Junction | 47,063 | 85.1% | 87.0 min |
| DRO | Durango, CO | Durango | 42,722 | 83.4% | 89.7 min |
| EGE | Eagle, CO | Eagle | 37,271 | 78% | 91.3 min |
| MTJ | Montrose/Delta, CO | Montrose/Delta | 32,233 | 81.3% | 78.9 min |
| HDN | Hayden, CO | Hayden | 27,069 | 79.7% | 79.9 min |
| GUC | Gunnison, CO | Gunnison | 9,819 | 82.9% | 110.4 min |
| PUB | Pueblo, CO | Pueblo | 3,776 | 88.8% | 123.8 min |
| ALS | Alamosa, CO | Alamosa | 1,982 | 89% | 166.1 min |
Colorado traffic-scale reading
The standout signal in Colorado is traffic scale: 3,708,491 BTS flights place it #6 of 53 by book size. That busy-book footprint sits beside a 79% on-time rate (0 pts above the 79% U.S. average), 779,611 delayed departures, and a 1.09% cancellation rate.
As a busy-book state, Denver, CO (DEN) in Denver dominates the average with 3,293,040 flights at 78.9% on-time - hub delay mix swings the state figure more than a thin schedule would.
On the recent 24-month tape, delay pressure is lightest in Oct 2024 and heaviest in Jun 2025. On reliability, Alamosa, CO (ALS) posts the highest on-time rate at 89% across 1,982 flights. On-time performance explained.
States With a Similar On-Time Rate
Other U.S. states whose statewide on-time rate is closest to Colorado's 79%.
Using Colorado's data
Colorado's statewide on-time book sits in the slower third of BTS states; check the specific airport before treating the headline as typical.
- Alamosa, CO (ALS) is the most reliable airport in Colorado among those with meaningful traffic. ALS profile
- Denver, CO handles the most traffic in the state; its performance weighs heavily on the state average. DEN profile
- See how Colorado compares with every other state that has BTS-tracked airports. All states
State averages are flight-weighted across all reporting airports in the state; a single busy airport can dominate the figure.
Read our methodology - how this data is sourced, computed, and verified.
Source: U.S. Bureau of Transportation Statistics (BTS) Airline on-time performance and operational reliability · 2025