Great Falls International in March 2026

82.7%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 March 2026, reporting carriers scheduled 185 domestic departures from Great Falls International (GTF). 82.7% left less than 15 minutes late and 83.2% reached their destination on time; 2.7% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so GTF departures were 9.9 points above the national departure figure.

A year earlier, in March 2025, the airport had 234 departures with 94.4% leaving on time: a change of −11.7 points, with flights down 21%.

Flights arriving at GTF that month were on time 78.9% of the time (185 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, extreme weather 51%, air carrier 19% and late-arriving aircraft 18%.

On time 83.2%
Arrived 15+ minutes late 14.1%
Cancelled 2.7%
Diverted 0.0%

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

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

Measure	Mar 2026	Mar 2025	GTF, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	82.7%	94.4%	88.2%	72.8%
Arrived on time	83.2%	93.2%	87.7%	73.2%
Cancelled	2.7%	0.0%	0.8%	2.9%
Average departure delay (late minutes only)	13.2 min	5.5 min	10.6 min	20.3 min
Scheduled departures a day	6	8	6	20,403
Scheduled departures	185	234	2,168	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	114	62%	78.9%	0.3 min	3.5%
UA United Airlines	53	29%	88.7%	-14.0 min	1.9%
G4 Allegiant Air	18	10%	94.4%	-7.9 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	79.3%	1.3 min	3.3%
GTF–DEN	Great Falls to Denver	62	90.3%	-16.0 min	1.6%
GTF–SEA	Great Falls to Seattle	13	61.5%	14.0 min	7.7%
GTF–AZA	Great Falls to Phoenix	9	88.9%	0.3 min	0.0%
GTF–LAS	Great Falls to Las Vegas	9	100.0%	-16.1 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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	18.5%	33.5%	386
Late-arriving aircraft	17.8%	39.3%	370
National Aviation System	12.9%	21.0%	268
Extreme weather	50.8%	5.9%	1,058
Security	0.0%	0.2%	0

2,082 delay minutes on 26 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 March 2026?

82.7% of 185 scheduled domestic departures left less than 15 minutes late, and 83.2% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 94.4% of 234 departures left on time and 0.0% were cancelled, against 82.7% and 2.7% in March 2026.

Provenance

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