Casper/Natrona County International in August 2025

73.4%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 August 2025, reporting carriers scheduled 214 domestic departures from Casper/Natrona County International (CPR). 73.4% left less than 15 minutes late and 68.2% reached their destination on time; 0.0% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so CPR departures were 3.4 points below the national departure figure.

A year earlier, in August 2024, the airport had 235 departures with 79.1% leaving on time: a change of −5.7 points, with flights down 9%.

Flights arriving at CPR that month were on time 68.7% of the time (214 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 55%, national aviation system 28% and late-arriving aircraft 13%.

On time 68.2%
Arrived 15+ minutes late 31.3%
Cancelled 0.0%
Diverted 0.5%

Every scheduled departure from CPR in August 2025, judged by arrival at the destination.

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

Measure	Aug 2025	Aug 2024	CPR, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	73.4%	79.1%	83.2%	76.8%
Arrived on time	68.2%	81.7%	82.1%	76.3%
Cancelled	0.0%	0.9%	0.8%	1.1%
Average departure delay (late minutes only)	30.9 min	17.0 min	16.7 min	17.6 min
Scheduled departures a day	7	8	7	20,079
Scheduled departures	214	235	2,600	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	214	100%	68.2%	22.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CPR–DEN	Casper to Denver	214	68.2%	22.3 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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	55.0%	33.1%	3,521
Late-arriving aircraft	13.0%	40.5%	830
National Aviation System	28.2%	19.2%	1,801
Extreme weather	3.8%	7.0%	245
Security	0.0%	0.1%	0

6,397 delay minutes on 67 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 CPR on time in August 2025?

73.4% of 214 scheduled domestic departures left less than 15 minutes late, and 68.2% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 79.1% of 235 departures left on time and 0.9% were cancelled, against 73.4% and 0.0% in August 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for CPR · methodology · corrections.