BZN · Bozeman Yellowstone International Airport

Share of flights 15+ min late, by month

departures arrivals usual for the month (departures) Jan 2015 → Jul 2026; gridlines 10/20/30/40%

Month	Flights	Late 15+	vs usual	Cancelled	Avg min	Main cause
Jul 2026	1,379	27.4%	+3.5	1.2%	22	Air traffic
Jun 2026	1,258	23.6%	+3.6	0.6%	20	Late aircraft
May 2026	849	17.6%	+1.0	0.7%	13	Airline
Apr 2026	717	15.7%	-0.1	0.3%	15	Airline
Mar 2026	1,020	22.5%	+5.0	1.3%	24	Airline
Feb 2026	848	18.5%	-1.5	0.7%	14	Airline
Jan 2026	890	15.0%	-7.9	1.2%	11	Late aircraft
Dec 2025	941	25.9%	+9.6	1.0%	24	Late aircraft
Nov 2025	660	13.2%	-0.5	2.1%	17	Late aircraft
Oct 2025	861	12.6%	+0.2	0.3%	8	Airline
Sep 2025	1,081	13.7%	+0.2	0.3%	10	Air traffic
Aug 2025	1,300	21.8%	+3.7	0.5%	20	Air traffic
Jul 2025	1,330	26.5%	+3.3	0.8%	22	Air traffic
Jun 2025	1,129	24.4%	+5.7	0.2%	20	Late aircraft
May 2025	720	18.4%	+4.1	1.0%	14	Air traffic
Apr 2025	568	16.0%	+4.3	1.1%	16	Late aircraft
Mar 2025	928	17.5%	-0.0	0.2%	14	Air traffic
Feb 2025	752	26.0%	+6.0	0.8%	25	Air traffic
Jan 2025	781	24.6%	+3.1	1.7%	29	Airline
Dec 2024	791	16.2%	+0.1	0.4%	18	Airline
Nov 2024	587	14.2%	+0.6	0.7%	13	Airline
Oct 2024	729	11.1%	-1.5	0.1%	7	Airline
Sep 2024	902	12.3%	-1.2	0.0%	7	Late aircraft
Aug 2024	1,112	21.2%	+3.1	0.8%	18	Late aircraft

Airline	Flights	Late	Canc.
SkyWest	186	15.1%	0.0%
Delta	190	16.3%	0.0%
United	259	20.1%	0.0%
Allegiant	39	20.5%	0.0%
American	156	26.6%	1.3%
Southwest	206	36.4%	0.0%
Alaska	60	41.7%	0.0%
JetBlue	33	45.5%	0.0%

Airlines with 30+ departures that month.

Date	Flights	Late	Canc.
2021-07-18	52	50%	12%
2021-07-25	52	54%	4%
2026-07-11	56	47%	2%
2021-07-31	57	46%	2%
2021-06-27	51	42%	6%
2026-06-13	52	44%	0%
2021-07-01	50	42%	4%
2026-06-20	55	37%	2%
2021-06-26	53	37%	2%
2021-07-17	57	34%	2%
2026-07-18	55	29%	7%
2021-07-22	53	33%	2%

Departures; ranked by share late or cancelled.

None recorded.