Great Falls International in April 2025

89.8%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 April 2025, reporting carriers scheduled 216 domestic departures from Great Falls International (GTF). 89.8% left less than 15 minutes late and 86.1% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so GTF departures were 9.2 points above the national departure figure.

A year earlier, in April 2024, the airport had 223 departures with 91.5% leaving on time: a change of −1.7 points, with flights down 3%.

Flights arriving at GTF that month were on time 83.3% of the time (216 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 59%, late-arriving aircraft 25% and national aviation system 13%.

On time 86.1%
Arrived 15+ minutes late 13.9%
Cancelled 0.0%
Diverted 0.0%

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

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

Measure	Apr 2025	Apr 2024	GTF, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	89.8%	91.5%	88.2%	80.6%
Arrived on time	86.1%	88.8%	87.7%	79.5%
Cancelled	0.0%	0.0%	0.8%	0.8%
Average departure delay (late minutes only)	11.6 min	12.9 min	10.6 min	14.1 min
Scheduled departures a day	7	7	6	19,465
Scheduled departures	216	223	2,168	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	199	92%	87.9%	-5.1 min	0.0%
G4 Allegiant Air	17	8%	64.7%	67.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GTF–SLC	Great Falls to Salt Lake City	88	92.0%	-8.4 min	0.0%
GTF–DEN	Great Falls to Denver	60	83.3%	-1.2 min	0.0%
GTF–MSP	Great Falls to Minneapolis	30	96.7%	-9.5 min	0.0%
GTF–SEA	Great Falls to Seattle	21	71.4%	4.0 min	0.0%
GTF–AZA	Great Falls to Phoenix	9	66.7%	13.0 min	0.0%
GTF–LAS	Great Falls to Las Vegas	8	62.5%	127.8 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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	59.4%	32.7%	1,568
Late-arriving aircraft	25.3%	39.4%	667
National Aviation System	13.1%	22.2%	345
Extreme weather	2.2%	5.5%	58
Security	0.0%	0.2%	0

2,638 delay minutes on 30 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 April 2025?

89.8% of 216 scheduled domestic departures left less than 15 minutes late, and 86.1% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 91.5% of 223 departures left on time and 0.0% were cancelled, against 89.8% and 0.0% in April 2025.

Provenance

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