Bozeman Yellowstone International in April 2026

84.1%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 April 2026, reporting carriers scheduled 717 domestic departures from Bozeman Yellowstone International (BZN). 84.1% left less than 15 minutes late and 83.3% reached their destination on time; 0.3% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so BZN departures were 5.0 points above the national departure figure.

A year earlier, in April 2025, the airport had 568 departures with 83.1% leaving on time: a change of +1.0 points, with flights up 26%.

Flights arriving at BZN that month were on time 83.5% of the time (716 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 33%, late-arriving aircraft 33% and national aviation system 21%.

On time 83.3%
Arrived 15+ minutes late 16.3%
Cancelled 0.3%
Diverted 0.1%

Every scheduled departure from BZN in April 2026, judged by arrival at the destination.

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

Measure	Apr 2026	Apr 2025	BZN, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	84.1%	83.1%	79.6%	79.1%
Arrived on time	83.3%	81.9%	79.5%	78.9%
Cancelled	0.3%	1.1%	0.8%	0.9%
Average departure delay (late minutes only)	15.4 min	15.6 min	17.2 min	14.5 min
Scheduled departures a day	24	19	32	19,931
Scheduled departures	717	568	11,804	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	170	24%	85.9%	-2.9 min	0.0%
UA United Airlines	165	23%	81.2%	3.7 min	0.6%
DL Delta Air Lines	150	21%	86.7%	-2.2 min	0.0%
WN Southwest Airlines	125	17%	82.4%	3.1 min	0.0%
AA American Airlines	48	7%	70.8%	54.8 min	2.1%
AS Alaska Airlines	34	5%	94.1%	-12.4 min	0.0%
G4 Allegiant Air	25	3%	72.0%	4.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BZN–DEN	Bozeman to Denver	210	84.8%	-0.5 min	0.0%
BZN–SEA	Bozeman to Seattle	96	89.6%	-6.2 min	0.0%
BZN–SLC	Bozeman to Salt Lake City	90	86.7%	6.9 min	0.0%
BZN–MSP	Bozeman to Minneapolis	60	91.7%	-10.7 min	0.0%
BZN–ORD	Bozeman to Chicago	47	66.0%	7.0 min	2.1%
BZN–LAS	Bozeman to Las Vegas	43	86.0%	1.8 min	0.0%
BZN–DFW	Bozeman to Dallas/Fort Worth	38	68.4%	69.8 min	2.6%
BZN–ATL	Bozeman to Atlanta	30	76.7%	-5.1 min	0.0%
BZN–LAX	Bozeman to Los Angeles	30	100.0%	-14.9 min	0.0%
BZN–SFO	Bozeman to San Francisco	30	60.0%	26.4 min	0.0%
BZN–SAN	Bozeman to San Diego	10	100.0%	-13.9 min	0.0%
BZN–PDX	Bozeman to Portland	9	88.9%	-0.4 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 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	33.1%	33.5%	3,599
Late-arriving aircraft	32.7%	40.4%	3,561
National Aviation System	20.7%	21.0%	2,248
Extreme weather	13.5%	5.0%	1,468
Security	0.0%	0.1%	0

10,876 delay minutes on 117 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 April 2026?

84.1% of 717 scheduled domestic departures left less than 15 minutes late, and 83.3% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 83.1% of 568 departures left on time and 1.1% were cancelled, against 84.1% and 0.3% in April 2026.

Provenance

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