Glacier Park International in December 2024

85.3%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 259 domestic departures from Glacier Park International (FCA). 85.3% left less than 15 minutes late and 82.6% 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 FCA departures were 7.5 points above the national departure figure.

A year earlier, in December 2023, the airport had 241 departures with 84.6% leaving on time: a change of +0.7 points, with flights up 7%.

Flights arriving at FCA that month were on time 81.5% of the time (259 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 29% and national aviation system 15%.

On time 82.6%
Arrived 15+ minutes late 17.4%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from FCA 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	FCA, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	85.3%	84.6%	81.0%	77.8%
Arrived on time	82.6%	78.0%	80.1%	78.1%
Cancelled	0.0%	0.4%	0.9%	0.7%
Average departure delay (late minutes only)	15.0 min	33.5 min	17.8 min	16.6 min
Scheduled departures a day	9	8	11	19,686
Scheduled departures	259	241	4,115	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	95	37%	81.1%	4.9 min	0.0%
OO SkyWest Airlines	79	31%	89.9%	1.7 min	0.0%
DL Delta Air Lines	62	24%	82.3%	-4.9 min	0.0%
G4 Allegiant Air	23	9%	65.2%	4.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
FCA–DEN	Kalispell to Denver	91	85.7%	2.8 min	0.0%
FCA–SLC	Kalispell to Salt Lake City	90	86.7%	0.8 min	0.0%
FCA–MSP	Kalispell to Minneapolis	31	80.6%	-5.1 min	0.0%
FCA–ORD	Kalispell to Chicago	20	75.0%	4.0 min	0.0%
FCA–LAS	Kalispell to Las Vegas	8	75.0%	-11.5 min	0.0%
FCA–LAX	Kalispell to Los Angeles	8	62.5%	4.8 min	0.0%
FCA–AZA	Kalispell to Phoenix	7	57.1%	23.0 min	0.0%
FCA–SFO	Kalispell to San Francisco	4	75.0%	11.5 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 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	28.9%	34.3%	1,063
Late-arriving aircraft	44.3%	40.2%	1,631
National Aviation System	14.7%	17.8%	541
Extreme weather	12.2%	7.5%	448
Security	0.0%	0.2%	0

3,683 delay minutes on 45 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 FCA on time in December 2024?

85.3% of 259 scheduled domestic departures left less than 15 minutes late, and 82.6% 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, 84.6% of 241 departures left on time and 0.4% were cancelled, against 85.3% 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 FCA · methodology · corrections.