Aspen Pitkin County Sardy Field in July 2025

57.4%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 July 2025, reporting carriers scheduled 709 domestic departures from Aspen Pitkin County Sardy Field (ASE). 57.4% left less than 15 minutes late and 53.7% reached their destination on time; 7.6% were cancelled.

Nationally that month, 69.7% of flights departed on time and 69.0% arrived on time, so ASE departures were 12.3 points below the national departure figure.

A year earlier, in July 2024, the airport had 711 departures with 77.1% leaving on time: a change of −19.7 points, with flights down 0%.

Flights arriving at ASE that month were on time 60.4% of the time (709 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, extreme weather 37%, air carrier 22% and national aviation system 21%.

On time 53.7%
Arrived 15+ minutes late 38.1%
Cancelled 7.6%
Diverted 0.6%

Every scheduled departure from ASE in July 2025, judged by arrival at the destination.

July 2025 against a year earlier, the airport's year and the nation

Measure	Jul 2025	Jul 2024	ASE, 12 months to Jul 2026	All reported flights, Jul 2025
Departed on time	57.4%	77.1%	66.5%	69.7%
Arrived on time	53.7%	73.7%	66.5%	69.0%
Cancelled	7.6%	1.4%	5.9%	2.5%
Average departure delay (late minutes only)	43.7 min	21.9 min	32.2 min	24.3 min
Scheduled departures a day	24	24	22	21,048
Scheduled departures	709	711	8,072	631,428

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	709	100%	53.7%	41.5 min	7.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ASE–DEN	Aspen to Denver	245	51.4%	48.1 min	6.5%
ASE–DFW	Aspen to Dallas/Fort Worth	123	54.5%	49.6 min	9.8%
ASE–LAX	Aspen to Los Angeles	117	62.4%	30.1 min	4.3%
ASE–ORD	Aspen to Chicago	62	37.1%	37.9 min	12.9%
ASE–IAH	Aspen to Houston	61	52.5%	53.0 min	8.2%
ASE–SFO	Aspen to San Francisco	39	59.0%	22.7 min	5.1%
ASE–ATL	Aspen to Atlanta	31	77.4%	8.4 min	3.2%
ASE–AUS	Aspen to Austin	31	41.9%	45.5 min	16.1%

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), July 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2025	Minutes
Air carrier	22.4%	31.1%	6,562
Late-arriving aircraft	19.6%	40.8%	5,749
National Aviation System	21.0%	20.7%	6,134
Extreme weather	37.0%	7.3%	10,822
Security	0.0%	0.1%	0

29,267 delay minutes on 270 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 July 2025?

57.4% of 709 scheduled domestic departures left less than 15 minutes late, and 53.7% reached their destination on time. The national figures that month were 69.7% and 69.0%.

How does that compare with a year earlier?

In July 2024, 77.1% of 711 departures left on time and 1.4% were cancelled, against 57.4% and 7.6% in July 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2025; 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.