Helena Regional in December 2024

88.4%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 December 2024, reporting carriers scheduled 121 domestic departures from Helena Regional (HLN). 88.4% left less than 15 minutes late and 89.3% reached their destination on time; 0.0% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so HLN departures were 10.6 points above the national departure figure.

A year earlier, in December 2023, the airport had 158 departures with 93.7% leaving on time: a change of −5.3 points, with flights down 23%.

Flights arriving at HLN that month were on time 87.6% of the time (121 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 75%, extreme weather 22% and national aviation system 3%.

On time 89.3%
Arrived 15+ minutes late 10.7%
Cancelled 0.0%
Diverted 0.0%

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

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

Measure	Dec 2024	Dec 2023	HLN, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	88.4%	93.7%	89.3%	77.8%
Arrived on time	89.3%	91.8%	87.5%	78.1%
Cancelled	0.0%	1.3%	0.4%	0.7%
Average departure delay (late minutes only)	13.5 min	9.2 min	11.4 min	16.6 min
Scheduled departures a day	4	5	4	19,686
Scheduled departures	121	158	1,549	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	121	100%	89.3%	-4.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HLN–DEN	Helena to Denver	62	87.1%	-5.5 min	0.0%
HLN–SLC	Helena to Salt Lake City	59	91.5%	-3.3 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), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	74.7%	34.3%	1,141
Late-arriving aircraft	1.0%	40.2%	15
National Aviation System	2.6%	17.8%	39
Extreme weather	21.7%	7.5%	332
Security	0.0%	0.2%	0

1,527 delay minutes on 13 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 December 2024?

88.4% of 121 scheduled domestic departures left less than 15 minutes late, and 89.3% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 93.7% of 158 departures left on time and 1.3% were cancelled, against 88.4% and 0.0% in December 2024.

Provenance

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