Aspen Pitkin County Sardy Field in September 2024

74.5%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In September 2024, reporting carriers scheduled 549 domestic departures from Aspen Pitkin County Sardy Field (ASE). 74.5% left less than 15 minutes late and 72.3% reached their destination on time; 0.5% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so ASE departures were 9.9 points below the national departure figure.

A year earlier, in September 2023, the airport had 462 departures with 79.7% leaving on time: a change of −5.2 points, with flights up 19%.

Flights arriving at ASE that month were on time 80.3% of the time (547 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 39%, late-arriving aircraft 29% and extreme weather 22%.

On time 72.3%
Arrived 15+ minutes late 25.5%
Cancelled 0.5%
Diverted 1.6%

Every scheduled departure from ASE in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	ASE, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	74.5%	79.7%	66.5%	84.4%
Arrived on time	72.3%	77.5%	66.5%	83.9%
Cancelled	0.5%	0.0%	5.9%	0.6%
Average departure delay (late minutes only)	24.6 min	24.0 min	32.2 min	10.6 min
Scheduled departures a day	18	15	22	19,421
Scheduled departures	549	462	8,072	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	549	100%	72.3%	14.0 min	0.5%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ASE–DEN	Aspen to Denver	240	72.9%	14.3 min	0.8%
ASE–DFW	Aspen to Dallas/Fort Worth	93	77.4%	4.8 min	0.0%
ASE–ORD	Aspen to Chicago	86	70.9%	12.4 min	0.0%
ASE–LAX	Aspen to Los Angeles	60	73.3%	24.9 min	1.7%
ASE–IAH	Aspen to Houston	37	67.6%	24.6 min	0.0%
ASE–ATL	Aspen to Atlanta	30	56.7%	11.6 min	0.0%
ASE–SFO	Aspen to San Francisco	3	100.0%	-9.7 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	38.7%	38.6%	4,973
Late-arriving aircraft	28.7%	38.4%	3,696
National Aviation System	10.8%	18.2%	1,392
Extreme weather	21.8%	4.8%	2,799
Security	0.0%	0.1%	0

12,860 delay minutes on 140 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left ASE on time in September 2024?

74.5% of 549 scheduled domestic departures left less than 15 minutes late, and 72.3% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 79.7% of 462 departures left on time and 0.0% were cancelled, against 74.5% and 0.5% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ASE · methodology · corrections.