Great Falls International in September 2023

89.3%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 2023, reporting carriers scheduled 214 domestic departures from Great Falls International (GTF). 89.3% left less than 15 minutes late and 89.3% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so GTF departures were 8.8 points above the national departure figure.

Flights arriving at GTF that month were on time 87.4% of the time (214 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 70%, air carrier 18% and national aviation system 11%.

On time 89.3%
Arrived 15+ minutes late 10.3%
Cancelled 0.0%
Diverted 0.5%

Every scheduled departure from GTF in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	GTF, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	89.3%	—	88.2%	80.5%
Arrived on time	89.3%	—	87.7%	80.1%
Cancelled	0.0%	—	0.8%	1.2%
Average departure delay (late minutes only)	8.0 min	—	10.6 min	14.1 min
Scheduled departures a day	7	—	6	18,978
Scheduled departures	214	—	2,168	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	144	67%	95.8%	-7.1 min	0.0%
UA United Airlines	61	29%	78.7%	5.7 min	0.0%
G4 Allegiant Air	9	4%	55.6%	17.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GTF–SLC	Great Falls to Salt Lake City	84	100.0%	-11.7 min	0.0%
GTF–DEN	Great Falls to Denver	60	78.3%	6.3 min	0.0%
GTF–MSP	Great Falls to Minneapolis	30	100.0%	-8.3 min	0.0%
GTF–SEA	Great Falls to Seattle	30	80.0%	7.2 min	0.0%
GTF–LAS	Great Falls to Las Vegas	9	55.6%	17.3 min	0.0%
GTF–ORD	Great Falls to Chicago	1	100.0%	-26.0 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), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	17.8%	36.4%	259
Late-arriving aircraft	69.6%	38.3%	1,012
National Aviation System	10.7%	19.9%	156
Extreme weather	1.9%	5.1%	27
Security	0.0%	0.2%	0

1,454 delay minutes on 22 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 2023?

89.3% of 214 scheduled domestic departures left less than 15 minutes late, and 89.3% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for September 2023; 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.