Helena Regional in December 2025

87.7%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 December 2025, reporting carriers scheduled 122 domestic departures from Helena Regional (HLN). 87.7% left less than 15 minutes late and 86.1% reached their destination on time; 0.0% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so HLN departures were 15.7 points above the national departure figure.

A year earlier, in December 2024, the airport had 121 departures with 88.4% leaving on time: a change of −0.7 points, with flights up 1%.

Flights arriving at HLN that month were on time 87.7% of the time (122 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 37%, extreme weather 33% and air carrier 24%.

On time 86.1%
Arrived 15+ minutes late 13.9%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from HLN in December 2025, judged by arrival at the destination.

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

Measure	Dec 2025	Dec 2024	HLN, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	87.7%	88.4%	89.3%	72.0%
Arrived on time	86.1%	89.3%	87.5%	71.9%
Cancelled	0.0%	0.0%	0.4%	1.5%
Average departure delay (late minutes only)	14.7 min	13.5 min	11.4 min	21.2 min
Scheduled departures a day	4	4	4	19,410
Scheduled departures	122	121	1,549	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	122	100%	86.1%	0.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HLN–DEN	Helena to Denver	62	77.4%	13.6 min	0.0%
HLN–SLC	Helena to Salt Lake City	59	96.6%	-13.9 min	0.0%
HLN–SEA	Helena to Seattle	1	0.0%	45.0 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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	24.3%	33.3%	442
Late-arriving aircraft	36.6%	41.1%	664
National Aviation System	6.6%	19.1%	119
Extreme weather	32.5%	6.4%	591
Security	0.0%	0.2%	0

1,816 delay minutes on 17 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 2025?

87.7% of 122 scheduled domestic departures left less than 15 minutes late, and 86.1% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 88.4% of 121 departures left on time and 0.0% were cancelled, against 87.7% and 0.0% in December 2025.

Provenance

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