Glacier Park International in August 2025

78.4%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 August 2025, reporting carriers scheduled 583 domestic departures from Glacier Park International (FCA). 78.4% left less than 15 minutes late and 75.8% reached their destination on time; 0.7% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so FCA departures were 1.6 points above the national departure figure.

A year earlier, in August 2024, the airport had 551 departures with 79.9% leaving on time: a change of −1.5 points, with flights up 6%.

Flights arriving at FCA that month were on time 81.1% of the time (583 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, national aviation system 30% and air carrier 22%.

On time 75.8%
Arrived 15+ minutes late 22.8%
Cancelled 0.7%
Diverted 0.7%

Every scheduled departure from FCA 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	FCA, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	78.4%	79.9%	81.0%	76.8%
Arrived on time	75.8%	78.6%	80.1%	76.3%
Cancelled	0.7%	0.0%	0.9%	1.1%
Average departure delay (late minutes only)	18.6 min	21.5 min	17.8 min	17.6 min
Scheduled departures a day	19	18	11	20,079
Scheduled departures	583	551	4,115	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	215	37%	88.8%	-2.5 min	0.5%
UA United Airlines	127	22%	68.5%	19.9 min	0.8%
AA American Airlines	125	21%	51.2%	39.4 min	1.6%
DL Delta Air Lines	93	16%	91.4%	-3.7 min	0.0%
G4 Allegiant Air	23	4%	65.2%	20.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
FCA–DEN	Kalispell to Denver	124	72.6%	17.2 min	0.8%
FCA–ORD	Kalispell to Chicago	115	60.0%	33.5 min	0.9%
FCA–SLC	Kalispell to Salt Lake City	101	97.0%	-8.7 min	0.0%
FCA–DFW	Kalispell to Dallas/Fort Worth	67	59.7%	16.2 min	3.0%
FCA–MSP	Kalispell to Minneapolis	62	88.7%	1.0 min	0.0%
FCA–SFO	Kalispell to San Francisco	41	85.4%	1.8 min	0.0%
FCA–LAX	Kalispell to Los Angeles	31	83.9%	8.5 min	0.0%
FCA–AZA	Kalispell to Phoenix	11	54.5%	38.2 min	0.0%
FCA–SAN	Kalispell to San Diego	11	81.8%	-3.0 min	0.0%
FCA–LAS	Kalispell to Las Vegas	9	77.8%	4.6 min	0.0%
FCA–LGA	Kalispell to New York	5	60.0%	8.2 min	0.0%
FCA–IAH	Kalispell to Houston	3	66.7%	-2.7 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	21.6%	33.1%	2,433
Late-arriving aircraft	39.3%	40.5%	4,438
National Aviation System	29.5%	19.2%	3,325
Extreme weather	9.6%	7.0%	1,089
Security	0.0%	0.1%	0

11,285 delay minutes on 133 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 August 2025?

78.4% of 583 scheduled domestic departures left less than 15 minutes late, and 75.8% 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, 79.9% of 551 departures left on time and 0.0% were cancelled, against 78.4% and 0.7% 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 FCA · methodology · corrections.