Helena Regional in August 2025

76.8%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 155 domestic departures from Helena Regional (HLN). 76.8% left less than 15 minutes late and 74.2% reached their destination on time; 1.3% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so HLN departures were level with the national departure figure.

A year earlier, in August 2024, the airport had 124 departures with 89.5% leaving on time: a change of −12.7 points, with flights up 25%.

Flights arriving at HLN that month were on time 74.8% of the time (155 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 32%, national aviation system 30% and air carrier 20%.

On time 74.2%
Arrived 15+ minutes late 23.2%
Cancelled 1.3%
Diverted 1.3%

Every scheduled departure from HLN 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	HLN, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	76.8%	89.5%	89.3%	76.8%
Arrived on time	74.2%	87.1%	87.5%	76.3%
Cancelled	1.3%	0.0%	0.4%	1.1%
Average departure delay (late minutes only)	24.5 min	24.4 min	11.4 min	17.6 min
Scheduled departures a day	5	4	4	20,079
Scheduled departures	155	124	1,549	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	155	100%	74.2%	17.8 min	1.3%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HLN–DEN	Helena to Denver	93	60.2%	32.2 min	2.2%
HLN–SLC	Helena to Salt Lake City	62	95.2%	-3.0 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	20.1%	33.1%	804
Late-arriving aircraft	31.5%	40.5%	1,261
National Aviation System	30.2%	19.2%	1,208
Extreme weather	18.2%	7.0%	729
Security	0.0%	0.1%	0

4,002 delay minutes on 36 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 HLN on time in August 2025?

76.8% of 155 scheduled domestic departures left less than 15 minutes late, and 74.2% 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, 89.5% of 124 departures left on time and 0.0% were cancelled, against 76.8% and 1.3% 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 HLN · methodology · corrections.