Aspen Pitkin County Sardy Field in September 2023

79.7%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 2023, reporting carriers scheduled 462 domestic departures from Aspen Pitkin County Sardy Field (ASE). 79.7% left less than 15 minutes late and 77.5% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so ASE departures were 0.8 points below the national departure figure.

Flights arriving at ASE that month were on time 76.0% of the time (459 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 42%, late-arriving aircraft 36% and extreme weather 16%.

On time 77.5%
Arrived 15+ minutes late 22.1%
Cancelled 0.0%
Diverted 0.4%

Every scheduled departure from ASE in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	ASE, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	79.7%	—	66.5%	80.5%
Arrived on time	77.5%	—	66.5%	80.1%
Cancelled	0.0%	—	5.9%	1.2%
Average departure delay (late minutes only)	24.0 min	—	32.2 min	14.1 min
Scheduled departures a day	15	—	22	18,978
Scheduled departures	462	—	8,072	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	462	100%	77.5%	12.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ASE–DEN	Aspen to Denver	188	77.1%	5.9 min	0.0%
ASE–DFW	Aspen to Dallas/Fort Worth	89	76.4%	21.0 min	0.0%
ASE–ORD	Aspen to Chicago	60	81.7%	5.8 min	0.0%
ASE–LAX	Aspen to Los Angeles	46	89.1%	9.7 min	0.0%
ASE–IAH	Aspen to Houston	39	82.1%	-4.2 min	0.0%
ASE–AUS	Aspen to Austin	29	55.2%	63.2 min	0.0%
ASE–SFO	Aspen to San Francisco	11	63.6%	8.6 min	0.0%

By scheduled departure hour

100

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	41.5%	36.4%	4,584
Late-arriving aircraft	36.3%	38.3%	4,009
National Aviation System	6.5%	19.9%	714
Extreme weather	15.8%	5.1%	1,749
Security	0.0%	0.2%	0

11,056 delay minutes on 102 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 2023?

79.7% of 462 scheduled domestic departures left less than 15 minutes late, and 77.5% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; 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.