Great Falls International in May 2024

90.5%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 May 2024, reporting carriers scheduled 210 domestic departures from Great Falls International (GTF). 90.5% left less than 15 minutes late and 87.6% reached their destination on time; 0.0% were cancelled.

Nationally that month, 73.4% of flights departed on time and 72.3% arrived on time, so GTF departures were 17.1 points above the national departure figure.

Flights arriving at GTF that month were on time 85.2% of the time (210 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 57%, national aviation system 30% and late-arriving aircraft 11%.

On time 87.6%
Arrived 15+ minutes late 12.4%
Cancelled 0.0%
Diverted 0.0%

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

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

Measure	May 2024	Year earlier	GTF, 12 months to Jul 2026	All reported flights, May 2024
Departed on time	90.5%	—	88.2%	73.4%
Arrived on time	87.6%	—	87.7%	72.3%
Cancelled	0.0%	—	0.8%	1.4%
Average departure delay (late minutes only)	7.4 min	—	10.6 min	20.8 min
Scheduled departures a day	7	—	6	20,325
Scheduled departures	210	—	2,168	609,743

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	189	90%	88.9%	-5.6 min	0.0%
G4 Allegiant Air	13	6%	69.2%	11.0 min	0.0%
UA United Airlines	8	4%	87.5%	2.4 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%	-9.0 min	0.0%
GTF–DEN	Great Falls to Denver	62	90.3%	-9.8 min	0.0%
GTF–MSP	Great Falls to Minneapolis	31	90.3%	0.8 min	0.0%
GTF–SEA	Great Falls to Seattle	15	60.0%	23.5 min	0.0%
GTF–LAS	Great Falls to Las Vegas	9	55.6%	23.3 min	0.0%
GTF–AZA	Great Falls to Phoenix	4	100.0%	-16.7 min	0.0%
GTF–ORD	Great Falls to Chicago	1	100.0%	-6.0 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), May 2024.

Delay causes

BTS cause category	Share of delay minutes	National, May 2024	Minutes
Air carrier	57.0%	29.8%	872
Late-arriving aircraft	11.2%	43.0%	171
National Aviation System	30.0%	20.1%	458
Extreme weather	1.8%	7.0%	28
Security	0.0%	0.1%	0

1,529 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 May 2024?

90.5% of 210 scheduled domestic departures left less than 15 minutes late, and 87.6% reached their destination on time. The national figures that month were 73.4% and 72.3%.

How does that compare with a year earlier?

May 2023 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 May 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.