According to PlainFlights' airport traffic ranking (BTS On-Time Performance total flights), Aspen, CO (ASE) ranks #119 of 382 tracked US airports by total flights (most flights = #1). Aspen, CO posts bottom-quartile on-time performance among the 382 tracked U.S. airports, as a mid-size U.S. airport.
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ASE on-time rate vs. the national average
Behind the U.S. average across all 382 tracked airports.
Volume vs. on-time rate
Where Aspen, CO sits on volume vs. on-time rate
Among the 382 U.S. airports in the BTS corpus, Aspen, CO handles more flight
volume than 69% of them, and has a higher on-time rate than
2% of them, placing it in the quadrant for busy and delay-prone.
Flight volume and on-time rate are independent figures: a busy airport can still run
reliably, and a quiet one can still run late.
Aspen, CO vs. a 29-airport national peer sample, volume percentile vs. on-time-rate percentile.
Total flights (2020-2025): 78,805 ·
On-time rate: 73.5%
Delay Cause Breakdown
Top delay cause: Carrier.
Total delay minutes1,053,590 min
Carrier365,436 min · 35%
Late Aircraft299,908 min · 28%
Weather225,470 min · 21%
NAS (National Aviation System)158,144 min · 15%
Security4,632 min · 0%
Source: U.S. DOT Bureau of Transportation Statistics, On-Time Performance
ASE - seasonal on-time pattern
Best: November (92.5%) · worst: December (82%)
ASE - on-time rate by year
2020–2025, year-over-year trend.
ASE - taxi-out and taxi-in (monthly)
Average taxi-out 22.4 min · taxi-in 6.4 min over the last 24 reported months (U.S. airport mean taxi-out ≈ 16.4 min).
ASE's average taxi-out (22.4 min) runs longer than the recent U.S. airport mean (~16.4 min). The heaviest month in this window is March 2024 at 26.1 min; the lightest is September 2024 at 18.9 min.
Two PlainFlights-derived comparison paths for Aspen, CO, both outside Colorado so the neighborhoods are not same-state geography. Axes stay disjoint: volume peers exclude the on-time peer set. Same-state compare stays below.
The standout signal at Aspen, CO is on-time standing: 73.5% (5.5 pts below the 79% national flight-weighted average; roughly the bottom-quartile on-time performance) across 78,805 BTS flights (2020–2025). When a departure runs late, the average delay is 97.1 minutes; cancellations run 3.88%.
Delay minutes concentrate in Carrier (28.5% late-aircraft, 34.7% carrier, 15.0% NAS, 21.4% weather, 0.4% security). As a busy airport, that mix matters more for connection planning than for a thin schedule.
On the multi-year calendar, ASE is strongest in November (92.5% on-time) and weakest in December (82%), a 10.5-point swing. Volume peaks in March (~1,889 flights/month). The busiest connecting route is to DEN (Denver) at 74.9% on-time. Field definitions: on-time performance explained.
Aspen, CO vs. the national on-time distribution
On-time rate among all 382 tracked U.S. airports
73.5%Top 98%higher than 2% of 382 airports
Aspen, CO
60%95%
U.S. airports by on-time rate, bucketed by value
Each bar is a band; taller bars hold more airports. 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.
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025).
Statistics reflect cumulative performance across all available reporting periods. On-time rates exclude cancelled and diverted flights.
ASE's on-time book sits in the slower half of the BTS set; check the delay mix and the worst month before treating the headline as typical.
Check the busiest route from ASE before you book a connection. See top routes →
Travel in November rather than December if your dates are flexible. Seasonal patterns →
Build extra connection buffer when taxi-out spikes. March 2024 averaged 26.1 min. Taxi times →
On-time rate reflects the BTS historical average across all reporting carriers at this airport, not any single flight or airline.
Frequently Asked Questions
What is Aspen, CO's on-time rate?
Aspen, CO (ASE) has a 73.5% on-time rate across 78,805 BTS-tracked flights (2020-2025), 5.5 pts below the 79% national flight-weighted average; that places it in roughly the bottom-quartile on-time performance.
How does ASE rank among U.S. airports by traffic volume?
Aspen, CO ranks #119 of 382 tracked US airports by total BTS flights (most flights = #1), making it a mid-size U.S. airport.
What's the most common cause of delays at Aspen, CO?
Carrier is the leading delay cause at ASE, accounting for 34.7% of delay minutes. The full breakdown: 28.5% late-aircraft, 34.7% carrier, 15.0% NAS/air-traffic-control, 21.4% weather, and 0.4% security.
When is the best time to fly through Aspen, CO?
November is historically ASE's strongest month at 92.5% on-time, while December is the weakest at 82%, a 10.5-point swing across the BTS historical record.