Aspen Pitkin County Sardy Field in June 2025

52.7%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 June 2025, reporting carriers scheduled 596 domestic departures from Aspen Pitkin County Sardy Field (ASE). 52.7% left less than 15 minutes late and 48.7% reached their destination on time; 6.9% were cancelled.

Nationally that month, 71.4% of flights departed on time and 70.3% arrived on time, so ASE departures were 18.7 points below the national departure figure.

A year earlier, in June 2024, the airport had 696 departures with 70.4% leaving on time: a change of −17.7 points, with flights down 14%.

Flights arriving at ASE that month were on time 55.9% of the time (603 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, extreme weather 37%, late-arriving aircraft 23% and national aviation system 22%.

On time 48.7%
Arrived 15+ minutes late 43.6%
Cancelled 6.9%
Diverted 0.8%

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

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

Measure	Jun 2025	Jun 2024	ASE, 12 months to Jul 2026	All reported flights, Jun 2025
Departed on time	52.7%	70.4%	66.5%	71.4%
Arrived on time	48.7%	67.2%	66.5%	70.3%
Cancelled	6.9%	7.5%	5.9%	1.6%
Average departure delay (late minutes only)	55.1 min	22.7 min	32.2 min	22.1 min
Scheduled departures a day	20	23	22	20,386
Scheduled departures	596	696	8,072	611,575

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	596	100%	48.7%	54.2 min	6.9%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ASE–DEN	Aspen to Denver	231	48.1%	47.8 min	3.9%
ASE–DFW	Aspen to Dallas/Fort Worth	104	46.2%	46.6 min	11.5%
ASE–LAX	Aspen to Los Angeles	88	55.7%	67.9 min	6.8%
ASE–ORD	Aspen to Chicago	54	44.4%	68.4 min	5.6%
ASE–IAH	Aspen to Houston	34	38.2%	97.7 min	8.8%
ASE–SFO	Aspen to San Francisco	31	67.7%	30.5 min	0.0%
ASE–ATL	Aspen to Atlanta	28	64.3%	32.0 min	0.0%
ASE–AUS	Aspen to Austin	26	23.1%	72.1 min	30.8%

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), June 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2025	Minutes
Air carrier	18.1%	31.6%	5,805
Late-arriving aircraft	22.9%	40.6%	7,360
National Aviation System	22.4%	20.9%	7,178
Extreme weather	36.6%	6.9%	11,756
Security	0.0%	0.2%	0

32,099 delay minutes on 260 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 June 2025?

52.7% of 596 scheduled domestic departures left less than 15 minutes late, and 48.7% reached their destination on time. The national figures that month were 71.4% and 70.3%.

How does that compare with a year earlier?

In June 2024, 70.4% of 696 departures left on time and 7.5% were cancelled, against 52.7% and 6.9% in June 2025.

Provenance

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