Helena Regional in September 2024

90.0%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 September 2024, reporting carriers scheduled 120 domestic departures from Helena Regional (HLN). 90.0% left less than 15 minutes late and 88.3% reached their destination on time; 0.0% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so HLN departures were 5.6 points above the national departure figure.

A year earlier, in September 2023, the airport had 125 departures with 90.4% leaving on time: a change of −0.4 points, with flights down 4%.

Flights arriving at HLN that month were on time 91.7% of the time (120 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, extreme weather 48%, late-arriving aircraft 25% and air carrier 21%.

On time 88.3%
Arrived 15+ minutes late 11.7%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from HLN in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	HLN, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	90.0%	90.4%	89.3%	84.4%
Arrived on time	88.3%	88.0%	87.5%	83.9%
Cancelled	0.0%	0.0%	0.4%	0.6%
Average departure delay (late minutes only)	10.7 min	5.5 min	11.4 min	10.6 min
Scheduled departures a day	4	4	4	19,421
Scheduled departures	120	125	1,549	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	120	100%	88.3%	-1.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HLN–DEN	Helena to Denver	60	76.7%	8.1 min	0.0%
HLN–SLC	Helena to Salt Lake City	60	100.0%	-11.6 min	0.0%

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), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	21.1%	38.6%	277
Late-arriving aircraft	24.7%	38.4%	323
National Aviation System	6.6%	18.2%	87
Extreme weather	47.6%	4.8%	623
Security	0.0%	0.1%	0

1,310 delay minutes on 14 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 September 2024?

90.0% of 120 scheduled domestic departures left less than 15 minutes late, and 88.3% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 90.4% of 125 departures left on time and 0.0% were cancelled, against 90.0% and 0.0% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; 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.