Boise Air Terminal in January 2024

79.4%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 January 2024, reporting carriers scheduled 1,597 domestic departures from Boise Air Terminal (BOI). 79.4% left less than 15 minutes late and 73.2% reached their destination on time; 1.7% were cancelled.

Nationally that month, 74.0% of flights departed on time and 72.9% arrived on time, so BOI departures were 5.4 points above the national departure figure.

Flights arriving at BOI that month were on time 74.8% of the time (1,594 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 35%, air carrier 26% and national aviation system 23%.

On time 73.2%
Arrived 15+ minutes late 25.0%
Cancelled 1.7%
Diverted 0.1%

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

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

Measure	Jan 2024	Year earlier	BOI, 12 months to Jul 2026	All reported flights, Jan 2024
Departed on time	79.4%	—	83.9%	74.0%
Arrived on time	73.2%	—	82.9%	72.9%
Cancelled	1.7%	—	0.5%	3.7%
Average departure delay (late minutes only)	15.9 min	—	12.2 min	18.7 min
Scheduled departures a day	53	—	65	18,242
Scheduled departures	1,597	—	23,701	547,271

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	710	44%	73.7%	12.0 min	1.1%
WN Southwest Airlines	356	22%	79.5%	3.3 min	0.8%
DL Delta Air Lines	203	13%	68.0%	18.5 min	0.0%
UA United Airlines	74	5%	70.3%	-0.8 min	14.9%
AA American Airlines	68	4%	60.3%	20.4 min	1.5%
AS Alaska Airlines	62	4%	72.6%	7.9 min	3.2%
NK Spirit Airlines	54	3%	72.2%	5.1 min	3.7%
MQ Envoy Air	39	2%	74.4%	15.3 min	0.0%
G4 Allegiant Air	31	2%	61.3%	58.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
BOI–SEA	Boise to Seattle	304	69.1%	14.2 min	0.7%
BOI–DEN	Boise to Denver	217	71.9%	11.3 min	6.0%
BOI–LAS	Boise to Las Vegas	169	76.3%	7.0 min	1.2%
BOI–SLC	Boise to Salt Lake City	129	66.7%	18.0 min	0.0%
BOI–PHX	Boise to Phoenix	128	81.3%	8.3 min	0.0%
BOI–SFO	Boise to San Francisco	109	81.7%	3.8 min	0.0%
BOI–LAX	Boise to Los Angeles	70	87.1%	-0.8 min	0.0%
BOI–DFW	Boise to Dallas/Fort Worth	69	60.9%	20.1 min	1.4%
BOI–OAK	Boise to Oakland	62	80.6%	1.7 min	1.6%
BOI–MSP	Boise to Minneapolis	60	68.3%	19.5 min	0.0%
BOI–SAN	Boise to San Diego	51	72.5%	11.7 min	0.0%
BOI–SMF	Boise to Sacramento	40	80.0%	-0.3 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), January 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2024	Minutes
Air carrier	26.3%	32.6%	7,473
Late-arriving aircraft	34.8%	39.0%	9,869
National Aviation System	23.2%	17.9%	6,578
Extreme weather	15.7%	10.3%	4,446
Security	0.1%	0.2%	16

28,382 delay minutes on 400 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 January 2024?

79.4% of 1,597 scheduled domestic departures left less than 15 minutes late, and 73.2% reached their destination on time. The national figures that month were 74.0% and 72.9%.

How does that compare with a year earlier?

January 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 January 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.