Aspen Pitkin County Sardy Field in December 2023

65.2%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 2023, reporting carriers scheduled 640 domestic departures from Aspen Pitkin County Sardy Field (ASE). 65.2% left less than 15 minutes late and 67.2% reached their destination on time; 5.0% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so ASE departures were 17.9 points below the national departure figure.

Flights arriving at ASE that month were on time 62.2% of the time (645 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 30%, air carrier 27% and extreme weather 23%.

On time 67.2%
Arrived 15+ minutes late 27.5%
Cancelled 5.0%
Diverted 0.3%

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

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

Measure	Dec 2023	Year earlier	ASE, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	65.2%	—	66.5%	83.1%
Arrived on time	67.2%	—	66.5%	83.8%
Cancelled	5.0%	—	5.9%	0.4%
Average departure delay (late minutes only)	24.5 min	—	32.2 min	11.6 min
Scheduled departures a day	21	—	22	19,013
Scheduled departures	640	—	8,072	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	640	100%	67.2%	13.3 min	5.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ASE–DEN	Aspen to Denver	227	66.5%	17.0 min	7.5%
ASE–LAX	Aspen to Los Angeles	99	66.7%	12.7 min	3.0%
ASE–DFW	Aspen to Dallas/Fort Worth	92	67.4%	0.7 min	6.5%
ASE–ORD	Aspen to Chicago	81	67.9%	10.4 min	2.5%
ASE–IAH	Aspen to Houston	56	62.5%	14.6 min	3.6%
ASE–ATL	Aspen to Atlanta	32	75.0%	9.5 min	0.0%
ASE–SFO	Aspen to San Francisco	29	65.5%	37.4 min	6.9%
ASE–AUS	Aspen to Austin	12	66.7%	18.0 min	0.0%
ASE–PHX	Aspen to Phoenix	12	83.3%	6.3 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), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	26.6%	37.1%	3,682
Late-arriving aircraft	30.3%	38.8%	4,198
National Aviation System	20.0%	17.6%	2,769
Extreme weather	23.1%	6.2%	3,199
Security	0.0%	0.3%	0

13,848 delay minutes on 176 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 2023?

65.2% of 640 scheduled domestic departures left less than 15 minutes late, and 67.2% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 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 December 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.