Aspen Pitkin County Sardy Field in December 2024

56.3%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 December 2024, reporting carriers scheduled 765 domestic departures from Aspen Pitkin County Sardy Field (ASE). 56.3% left less than 15 minutes late and 57.9% reached their destination on time; 8.9% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so ASE departures were 21.5 points below the national departure figure.

A year earlier, in December 2023, the airport had 640 departures with 65.2% leaving on time: a change of −8.9 points, with flights up 20%.

Flights arriving at ASE that month were on time 55.3% of the time (771 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 28%, extreme weather 26% and national aviation system 24%.

On time 57.9%
Arrived 15+ minutes late 32.8%
Cancelled 8.9%
Diverted 0.4%

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

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

Measure	Dec 2024	Dec 2023	ASE, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	56.3%	65.2%	66.5%	77.8%
Arrived on time	57.9%	67.2%	66.5%	78.1%
Cancelled	8.9%	5.0%	5.9%	0.7%
Average departure delay (late minutes only)	49.8 min	24.5 min	32.2 min	16.6 min
Scheduled departures a day	26	21	22	19,686
Scheduled departures	765	640	8,072	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	765	100%	57.9%	38.0 min	8.9%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ASE–DEN	Aspen to Denver	274	72.3%	15.2 min	6.9%
ASE–LAX	Aspen to Los Angeles	120	52.5%	41.3 min	8.3%
ASE–DFW	Aspen to Dallas/Fort Worth	115	57.4%	31.4 min	13.0%
ASE–ORD	Aspen to Chicago	90	54.4%	56.3 min	10.0%
ASE–IAH	Aspen to Houston	68	41.2%	50.7 min	10.3%
ASE–ATL	Aspen to Atlanta	42	42.9%	95.9 min	4.8%
ASE–SFO	Aspen to San Francisco	32	46.9%	58.3 min	9.4%
ASE–AUS	Aspen to Austin	13	15.4%	117.9 min	7.7%
ASE–PHX	Aspen to Phoenix	11	36.4%	45.6 min	18.2%

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), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	28.0%	34.3%	9,322
Late-arriving aircraft	21.4%	40.2%	7,099
National Aviation System	24.1%	17.8%	8,025
Extreme weather	26.1%	7.5%	8,679
Security	0.4%	0.2%	120

33,245 delay minutes on 251 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 December 2024?

56.3% of 765 scheduled domestic departures left less than 15 minutes late, and 57.9% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 65.2% of 640 departures left on time and 5.0% were cancelled, against 56.3% and 8.9% in December 2024.

Provenance

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