Casper/Natrona County International in June 2026

73.7%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 2026, reporting carriers scheduled 236 domestic departures from Casper/Natrona County International (CPR). 73.7% left less than 15 minutes late and 79.7% reached their destination on time; 0.0% were cancelled.

Nationally that month, 72.2% of flights departed on time and 72.8% arrived on time, so CPR departures were 1.5 points above the national departure figure.

A year earlier, in June 2025, the airport had 209 departures with 67.0% leaving on time: a change of +6.7 points, with flights up 13%.

Flights arriving at CPR that month were on time 62.3% of the time (236 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 40%, air carrier 33% and national aviation system 17%.

On time 79.7%
Arrived 15+ minutes late 19.9%
Cancelled 0.0%
Diverted 0.4%

Every scheduled departure from CPR in June 2026, judged by arrival at the destination.

June 2026 against a year earlier, the airport's year and the nation

Measure	Jun 2026	Jun 2025	CPR, 12 months to Jul 2026	All reported flights, Jun 2026
Departed on time	73.7%	67.0%	83.2%	72.2%
Arrived on time	79.7%	61.2%	82.1%	72.8%
Cancelled	0.0%	0.5%	0.8%	1.6%
Average departure delay (late minutes only)	22.2 min	30.3 min	16.7 min	20.6 min
Scheduled departures a day	8	7	7	20,253
Scheduled departures	236	209	2,600	607,577

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	236	100%	79.7%	7.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CPR–DEN	Casper to Denver	236	79.7%	7.3 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), June 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2026	Minutes
Air carrier	33.0%	30.8%	1,483
Late-arriving aircraft	39.5%	42.1%	1,775
National Aviation System	17.4%	20.3%	781
Extreme weather	10.1%	6.7%	455
Security	0.0%	0.1%	0

4,494 delay minutes on 47 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 June 2026?

73.7% of 236 scheduled domestic departures left less than 15 minutes late, and 79.7% reached their destination on time. The national figures that month were 72.2% and 72.8%.

How does that compare with a year earlier?

In June 2025, 67.0% of 209 departures left on time and 0.5% were cancelled, against 73.7% and 0.0% in June 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for June 2026; 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.