Great Falls International in September 2024

93.3%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 2024, reporting carriers scheduled 180 domestic departures from Great Falls International (GTF). 93.3% left less than 15 minutes late and 95.0% reached their destination on time; 0.0% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so GTF departures were 8.9 points above the national departure figure.

A year earlier, in September 2023, the airport had 214 departures with 89.3% leaving on time: a change of +4.0 points, with flights down 16%.

Flights arriving at GTF that month were on time 90.6% of the time (180 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 86%, late-arriving aircraft 10% and national aviation system 4%.

On time 95.0%
Arrived 15+ minutes late 5.0%
Cancelled 0.0%
Diverted 0.0%

Every scheduled departure from GTF in September 2024, judged by arrival at the destination.

September 2024 against a year earlier, the airport's year and the nation

Measure	Sep 2024	Sep 2023	GTF, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	93.3%	89.3%	88.2%	84.4%
Arrived on time	95.0%	89.3%	87.7%	83.9%
Cancelled	0.0%	0.0%	0.8%	0.6%
Average departure delay (late minutes only)	3.9 min	8.0 min	10.6 min	10.6 min
Scheduled departures a day	6	7	6	19,421
Scheduled departures	180	214	2,168	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	120	67%	95.0%	-8.9 min	0.0%
UA United Airlines	51	28%	94.1%	-12.1 min	0.0%
G4 Allegiant Air	9	5%	100.0%	-8.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GTF–SLC	Great Falls to Salt Lake City	81	96.3%	-12.0 min	0.0%
GTF–DEN	Great Falls to Denver	60	95.0%	-13.3 min	0.0%
GTF–MSP	Great Falls to Minneapolis	30	90.0%	2.9 min	0.0%
GTF–LAS	Great Falls to Las Vegas	9	100.0%	-8.8 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), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	86.1%	38.6%	460
Late-arriving aircraft	9.9%	38.4%	53
National Aviation System	3.9%	18.2%	21
Extreme weather	0.0%	4.8%	0
Security	0.0%	0.1%	0

534 delay minutes on 9 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 September 2024?

93.3% of 180 scheduled domestic departures left less than 15 minutes late, and 95.0% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 89.3% of 214 departures left on time and 0.0% were cancelled, against 93.3% and 0.0% in September 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2024; 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.