Glacier Park International in September 2025

86.6%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 2025, reporting carriers scheduled 477 domestic departures from Glacier Park International (FCA). 86.6% left less than 15 minutes late and 83.6% reached their destination on time; 0.0% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so FCA departures were 3.5 points above the national departure figure.

A year earlier, in September 2024, the airport had 359 departures with 88.9% leaving on time: a change of −2.3 points, with flights up 33%.

Flights arriving at FCA that month were on time 87.6% of the time (475 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 59%, late-arriving aircraft 21% and national aviation system 19%.

On time 83.6%
Arrived 15+ minutes late 15.9%
Cancelled 0.0%
Diverted 0.4%

Every scheduled departure from FCA in September 2025, judged by arrival at the destination.

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

Measure	Sep 2025	Sep 2024	FCA, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	86.6%	88.9%	81.0%	83.1%
Arrived on time	83.6%	88.9%	80.1%	82.8%
Cancelled	0.0%	0.0%	0.9%	0.5%
Average departure delay (late minutes only)	13.5 min	8.1 min	17.8 min	12.2 min
Scheduled departures a day	16	12	11	18,748
Scheduled departures	477	359	4,115	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	197	41%	88.3%	-5.6 min	0.0%
UA United Airlines	91	19%	86.8%	0.1 min	0.0%
DL Delta Air Lines	79	17%	86.1%	-2.6 min	0.0%
AA American Airlines	74	16%	70.3%	39.8 min	0.0%
MQ Envoy Air	28	6%	82.1%	2.0 min	0.0%
G4 Allegiant Air	8	2%	37.5%	34.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
FCA–DEN	Kalispell to Denver	120	87.5%	-0.6 min	0.0%
FCA–ORD	Kalispell to Chicago	96	72.9%	21.0 min	0.0%
FCA–SLC	Kalispell to Salt Lake City	90	96.7%	-11.1 min	0.0%
FCA–DFW	Kalispell to Dallas/Fort Worth	60	78.3%	18.7 min	0.0%
FCA–MSP	Kalispell to Minneapolis	49	81.6%	2.1 min	0.0%
FCA–SFO	Kalispell to San Francisco	36	83.3%	-5.5 min	0.0%
FCA–LAX	Kalispell to Los Angeles	18	94.4%	-17.1 min	0.0%
FCA–LAS	Kalispell to Las Vegas	8	37.5%	34.9 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), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	59.0%	34.3%	3,730
Late-arriving aircraft	20.5%	37.4%	1,298
National Aviation System	19.0%	22.6%	1,199
Extreme weather	1.6%	5.6%	100
Security	0.0%	0.1%	0

6,327 delay minutes on 76 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 September 2025?

86.6% of 477 scheduled domestic departures left less than 15 minutes late, and 83.6% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 88.9% of 359 departures left on time and 0.0% were cancelled, against 86.6% and 0.0% in September 2025.

Provenance

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