Great Falls International in October 2025

89.1%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 October 2025, reporting carriers scheduled 175 domestic departures from Great Falls International (GTF). 89.1% left less than 15 minutes late and 88.0% reached their destination on time; 0.6% were cancelled.

Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so GTF departures were 9.1 points above the national departure figure.

A year earlier, in October 2024, the airport had 194 departures with 91.2% leaving on time: a change of −2.1 points, with flights down 10%.

Flights arriving at GTF that month were on time 89.7% of the time (175 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 58%, late-arriving aircraft 23% and national aviation system 13%.

On time 88.0%
Arrived 15+ minutes late 11.4%
Cancelled 0.6%
Diverted 0.0%

Every scheduled departure from GTF in October 2025, judged by arrival at the destination.

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

Measure	Oct 2025	Oct 2024	GTF, 12 months to Jul 2026	All reported flights, Oct 2025
Departed on time	89.1%	91.2%	88.2%	80.0%
Arrived on time	88.0%	92.3%	87.7%	79.1%
Cancelled	0.6%	0.0%	0.8%	0.5%
Average departure delay (late minutes only)	12.5 min	7.5 min	10.6 min	13.9 min
Scheduled departures a day	6	7	6	20,195
Scheduled departures	175	194	2,168	605,844

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	100	57%	96.0%	-9.1 min	0.0%
UA United Airlines	57	33%	82.5%	2.4 min	1.8%
G4 Allegiant Air	18	10%	61.1%	88.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GTF–SLC	Great Falls to Salt Lake City	92	95.7%	-8.8 min	0.0%
GTF–DEN	Great Falls to Denver	62	83.9%	0.7 min	1.6%
GTF–AZA	Great Falls to Phoenix	9	66.7%	152.6 min	0.0%
GTF–LAS	Great Falls to Las Vegas	9	55.6%	24.9 min	0.0%
GTF–SEA	Great Falls to Seattle	3	100.0%	-2.0 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), October 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2025	Minutes
Air carrier	57.6%	34.0%	1,299
Late-arriving aircraft	23.1%	39.7%	520
National Aviation System	13.2%	22.9%	297
Extreme weather	6.1%	3.3%	138
Security	0.0%	0.1%	0

2,254 delay minutes on 20 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 GTF on time in October 2025?

89.1% of 175 scheduled domestic departures left less than 15 minutes late, and 88.0% reached their destination on time. The national figures that month were 80.0% and 79.1%.

How does that compare with a year earlier?

In October 2024, 91.2% of 194 departures left on time and 0.0% were cancelled, against 89.1% and 0.6% in October 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for GTF · methodology · corrections.