Glacier Park International in May 2025

85.5%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 May 2025, reporting carriers scheduled 318 domestic departures from Glacier Park International (FCA). 85.5% left less than 15 minutes late and 81.8% reached their destination on time; 0.3% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so FCA departures were 8.8 points above the national departure figure.

A year earlier, in May 2024, the airport had 254 departures with 82.3% leaving on time: a change of +3.2 points, with flights up 25%.

Flights arriving at FCA that month were on time 85.5% of the time (318 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 39%, late-arriving aircraft 33% and extreme weather 19%.

On time 81.8%
Arrived 15+ minutes late 17.3%
Cancelled 0.3%
Diverted 0.6%

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

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

Measure	May 2025	May 2024	FCA, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	85.5%	82.3%	81.0%	76.7%
Arrived on time	81.8%	84.3%	80.1%	75.4%
Cancelled	0.3%	0.0%	0.9%	1.0%
Average departure delay (late minutes only)	18.0 min	14.9 min	17.8 min	17.5 min
Scheduled departures a day	11	9	11	20,188
Scheduled departures	318	254	4,115	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	139	44%	84.2%	7.0 min	0.7%
UA United Airlines	72	23%	76.4%	13.8 min	0.0%
DL Delta Air Lines	62	19%	85.5%	9.7 min	0.0%
MQ Envoy Air	27	8%	66.7%	11.4 min	0.0%
G4 Allegiant Air	18	6%	94.4%	-12.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
FCA–SLC	Kalispell to Salt Lake City	113	92.9%	-5.1 min	0.0%
FCA–DEN	Kalispell to Denver	99	67.7%	21.5 min	1.0%
FCA–MSP	Kalispell to Minneapolis	31	80.6%	12.4 min	0.0%
FCA–DFW	Kalispell to Dallas/Fort Worth	27	66.7%	11.4 min	0.0%
FCA–LAX	Kalispell to Los Angeles	10	90.0%	-15.7 min	0.0%
FCA–ORD	Kalispell to Chicago	10	100.0%	-10.3 min	0.0%
FCA–SFO	Kalispell to San Francisco	10	90.0%	90.8 min	0.0%
FCA–AZA	Kalispell to Phoenix	9	100.0%	-9.8 min	0.0%
FCA–LAS	Kalispell to Las Vegas	9	88.9%	-15.1 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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	9.2%	29.3%	538
Late-arriving aircraft	33.2%	37.8%	1,940
National Aviation System	38.5%	25.9%	2,248
Extreme weather	19.0%	6.9%	1,112
Security	0.0%	0.1%	0

5,838 delay minutes on 55 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 May 2025?

85.5% of 318 scheduled domestic departures left less than 15 minutes late, and 81.8% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 82.3% of 254 departures left on time and 0.0% were cancelled, against 85.5% and 0.3% in May 2025.

Provenance

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