Great Falls International in January 2026

92.1%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 January 2026, reporting carriers scheduled 190 domestic departures from Great Falls International (GTF). 92.1% left less than 15 minutes late and 91.6% reached their destination on time; 0.5% were cancelled.

Nationally that month, 75.6% of flights departed on time and 75.3% arrived on time, so GTF departures were 16.5 points above the national departure figure.

A year earlier, in January 2025, the airport had 221 departures with 88.7% leaving on time: a change of +3.4 points, with flights down 14%.

Flights arriving at GTF that month were on time 90.5% of the time (190 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 26% and extreme weather 16%.

On time 91.6%
Arrived 15+ minutes late 7.9%
Cancelled 0.5%
Diverted 0.0%

Every scheduled departure from GTF in January 2026, judged by arrival at the destination.

January 2026 against a year earlier, the airport's year and the nation

Measure	Jan 2026	Jan 2025	GTF, 12 months to Jul 2026	All reported flights, Jan 2026
Departed on time	92.1%	88.7%	88.2%	75.6%
Arrived on time	91.6%	80.5%	87.7%	75.3%
Cancelled	0.5%	0.0%	0.8%	4.7%
Average departure delay (late minutes only)	3.7 min	11.7 min	10.6 min	16.7 min
Scheduled departures a day	6	7	6	18,133
Scheduled departures	190	221	2,168	544,003

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	168	88%	91.7%	-12.4 min	0.6%
G4 Allegiant Air	17	9%	88.2%	-15.0 min	0.0%
UA United Airlines	5	3%	100.0%	-18.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GTF–SLC	Great Falls to Salt Lake City	86	93.0%	-11.0 min	0.0%
GTF–DEN	Great Falls to Denver	62	90.3%	-16.9 min	1.6%
GTF–SEA	Great Falls to Seattle	25	92.0%	-7.4 min	0.0%
GTF–LAS	Great Falls to Las Vegas	9	100.0%	-17.2 min	0.0%
GTF–AZA	Great Falls to Phoenix	8	75.0%	-12.5 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), January 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2026	Minutes
Air carrier	25.6%	37.3%	148
Late-arriving aircraft	43.6%	35.0%	252
National Aviation System	14.7%	18.0%	85
Extreme weather	16.1%	9.6%	93
Security	0.0%	0.1%	0

578 delay minutes on 15 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 January 2026?

92.1% of 190 scheduled domestic departures left less than 15 minutes late, and 91.6% reached their destination on time. The national figures that month were 75.6% and 75.3%.

How does that compare with a year earlier?

In January 2025, 88.7% of 221 departures left on time and 0.0% were cancelled, against 92.1% and 0.5% in January 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for January 2026; 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.