Boise Air Terminal in July 2024

81.6%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 July 2024, reporting carriers scheduled 2,139 domestic departures from Boise Air Terminal (BOI). 81.6% left less than 15 minutes late and 79.9% reached their destination on time; 1.6% were cancelled.

Nationally that month, 68.5% of flights departed on time and 68.1% arrived on time, so BOI departures were 13.1 points above the national departure figure.

Flights arriving at BOI that month were on time 74.6% of the time (2,140 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 37% and national aviation system 14%.

On time 79.9%
Arrived 15+ minutes late 18.2%
Cancelled 1.6%
Diverted 0.2%

Every scheduled departure from BOI in July 2024, judged by arrival at the destination.

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

Measure	Jul 2024	Year earlier	BOI, 12 months to Jul 2026	All reported flights, Jul 2024
Departed on time	81.6%	—	83.9%	68.5%
Arrived on time	79.9%	—	82.9%	68.1%
Cancelled	1.6%	—	0.5%	2.9%
Average departure delay (late minutes only)	13.5 min	—	12.2 min	24.9 min
Scheduled departures a day	71	—	65	21,154
Scheduled departures	2,139	—	23,701	634,613

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	984	46%	84.0%	2.6 min	0.1%
WN Southwest Airlines	437	20%	82.2%	2.0 min	0.0%
DL Delta Air Lines	274	13%	65.7%	18.0 min	7.7%
UA United Airlines	194	9%	80.4%	12.2 min	2.1%
AA American Airlines	122	6%	80.3%	2.6 min	2.5%
NK Spirit Airlines	61	3%	70.5%	10.1 min	4.9%
G4 Allegiant Air	34	2%	79.4%	45.3 min	2.9%
AS Alaska Airlines	33	2%	60.6%	18.8 min	3.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BOI–SEA	Boise to Seattle	312	79.5%	3.9 min	0.3%
BOI–DEN	Boise to Denver	255	82.4%	6.2 min	1.6%
BOI–LAS	Boise to Las Vegas	157	72.6%	15.7 min	1.9%
BOI–LAX	Boise to Los Angeles	153	88.9%	-4.3 min	0.0%
BOI–SLC	Boise to Salt Lake City	144	75.0%	14.9 min	4.2%
BOI–PHX	Boise to Phoenix	119	89.1%	-3.6 min	0.0%
BOI–DFW	Boise to Dallas/Fort Worth	117	80.3%	3.1 min	2.6%
BOI–SFO	Boise to San Francisco	116	82.8%	4.6 min	0.9%
BOI–GEG	Boise to Spokane	111	82.0%	10.9 min	0.0%
BOI–SMF	Boise to Sacramento	92	80.4%	7.9 min	0.0%
BOI–MSP	Boise to Minneapolis	91	56.0%	25.0 min	11.0%
BOI–PDX	Boise to Portland	88	90.9%	4.9 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), July 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2024	Minutes
Air carrier	36.9%	36.6%	9,933
Late-arriving aircraft	46.7%	42.7%	12,563
National Aviation System	14.2%	16.0%	3,830
Extreme weather	2.1%	4.6%	554
Security	0.0%	0.1%	13

26,893 delay minutes on 390 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 BOI on time in July 2024?

81.6% of 2,139 scheduled domestic departures left less than 15 minutes late, and 79.9% reached their destination on time. The national figures that month were 68.5% and 68.1%.

How does that compare with a year earlier?

July 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 July 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for BOI · methodology · corrections.