Bozeman Yellowstone International in August 2023

81.4%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 August 2023, reporting carriers scheduled 980 domestic departures from Bozeman Yellowstone International (BZN). 81.4% left less than 15 minutes late and 79.3% reached their destination on time; 0.4% were cancelled.

Nationally that month, 76.7% of flights departed on time and 76.9% arrived on time, so BZN departures were 4.7 points above the national departure figure.

Flights arriving at BZN that month were on time 79.4% of the time (980 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 47%, late-arriving aircraft 33% and national aviation system 18%.

On time 79.3%
Arrived 15+ minutes late 19.6%
Cancelled 0.4%
Diverted 0.7%

Every scheduled departure from BZN in August 2023, judged by arrival at the destination.

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

Measure	Aug 2023	Year earlier	BZN, 12 months to Jul 2026	All reported flights, Aug 2023
Departed on time	81.4%	—	79.6%	76.7%
Arrived on time	79.3%	—	79.5%	76.9%
Cancelled	0.4%	—	0.8%	1.5%
Average departure delay (late minutes only)	18.2 min	—	17.2 min	17.3 min
Scheduled departures a day	33	—	32	20,100
Scheduled departures	980	—	11,804	602,987

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	225	23%	81.3%	6.9 min	0.0%
DL Delta Air Lines	199	20%	82.9%	6.4 min	1.5%
WN Southwest Airlines	178	18%	67.4%	14.0 min	0.0%
OO SkyWest Airlines	121	12%	86.8%	-0.1 min	0.8%
AA American Airlines	97	10%	79.4%	43.6 min	0.0%
AS Alaska Airlines	89	9%	83.1%	-2.8 min	0.0%
G4 Allegiant Air	40	4%	77.5%	6.0 min	0.0%
B6 JetBlue Airways	31	3%	71.0%	8.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BZN–DEN	Bozeman to Denver	242	69.8%	12.4 min	0.0%
BZN–SLC	Bozeman to Salt Lake City	124	87.1%	6.8 min	1.6%
BZN–MSP	Bozeman to Minneapolis	93	84.9%	3.0 min	1.1%
BZN–SEA	Bozeman to Seattle	89	83.1%	-2.8 min	0.0%
BZN–ORD	Bozeman to Chicago	70	82.9%	18.7 min	0.0%
BZN–DFW	Bozeman to Dallas/Fort Worth	66	83.3%	38.2 min	0.0%
BZN–LAS	Bozeman to Las Vegas	65	72.3%	11.6 min	0.0%
BZN–SFO	Bozeman to San Francisco	48	81.3%	25.9 min	0.0%
BZN–LAX	Bozeman to Los Angeles	43	90.7%	-6.6 min	0.0%
BZN–ATL	Bozeman to Atlanta	31	80.6%	-7.1 min	0.0%
BZN–EWR	Bozeman to Newark	31	83.9%	-0.2 min	0.0%
BZN–BNA	Bozeman to Nashville	17	88.2%	-1.6 min	0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), August 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2023	Minutes
Air carrier	47.1%	36.7%	8,255
Late-arriving aircraft	32.8%	42.2%	5,742
National Aviation System	18.1%	15.7%	3,166
Extreme weather	2.0%	5.1%	359
Security	0.0%	0.2%	0

17,522 delay minutes on 192 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 BZN on time in August 2023?

81.4% of 980 scheduled domestic departures left less than 15 minutes late, and 79.3% reached their destination on time. The national figures that month were 76.7% and 76.9%.

How does that compare with a year earlier?

August 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 August 2023; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BZN · methodology · corrections.