Great Falls International in July 2025

89.9%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 July 2025, reporting carriers scheduled 207 domestic departures from Great Falls International (GTF). 89.9% left less than 15 minutes late and 87.9% reached their destination on time; 0.0% were cancelled.

Nationally that month, 69.7% of flights departed on time and 69.0% arrived on time, so GTF departures were 20.2 points above the national departure figure.

A year earlier, in July 2024, the airport had 194 departures with 90.2% leaving on time: a change of −0.3 points, with flights up 7%.

Flights arriving at GTF that month were on time 80.7% of the time (207 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 38%, extreme weather 30% and air carrier 22%.

On time 87.9%
Arrived 15+ minutes late 11.1%
Cancelled 0.0%
Diverted 1.0%

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

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

Measure	Jul 2025	Jul 2024	GTF, 12 months to Jul 2026	All reported flights, Jul 2025
Departed on time	89.9%	90.2%	88.2%	69.7%
Arrived on time	87.9%	90.2%	87.7%	69.0%
Cancelled	0.0%	2.1%	0.8%	2.5%
Average departure delay (late minutes only)	9.7 min	10.8 min	10.6 min	24.3 min
Scheduled departures a day	7	7	6	21,048
Scheduled departures	207	194	2,168	631,428

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	127	61%	93.7%	-3.0 min	0.0%
UA United Airlines	62	30%	74.2%	11.3 min	0.0%
G4 Allegiant Air	18	9%	94.4%	-8.4 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	93.5%	-3.7 min	0.0%
GTF–DEN	Great Falls to Denver	62	74.2%	11.3 min	0.0%
GTF–MSP	Great Falls to Minneapolis	31	93.5%	-1.6 min	0.0%
GTF–AZA	Great Falls to Phoenix	9	88.9%	-2.8 min	0.0%
GTF–LAS	Great Falls to Las Vegas	9	100.0%	-14.0 min	0.0%
GTF–ORD	Great Falls to Chicago	4	100.0%	-0.2 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), July 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2025	Minutes
Air carrier	22.2%	31.1%	442
Late-arriving aircraft	9.2%	40.8%	182
National Aviation System	38.4%	20.7%	763
Extreme weather	30.2%	7.3%	601
Security	0.0%	0.1%	0

1,988 delay minutes on 23 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 July 2025?

89.9% of 207 scheduled domestic departures left less than 15 minutes late, and 87.9% reached their destination on time. The national figures that month were 69.7% and 69.0%.

How does that compare with a year earlier?

In July 2024, 90.2% of 194 departures left on time and 2.1% were cancelled, against 89.9% and 0.0% in July 2025.

Provenance

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