Ellison Onizuka Kona International at Keahole in October 2025

86.1%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 October 2025, reporting carriers scheduled 1,267 domestic departures from Ellison Onizuka Kona International at Keahole (KOA). 86.1% left less than 15 minutes late and 85.2% reached their destination on time; 1.5% were cancelled.

Nationally that month, 80.0% of flights departed on time and 79.1% arrived on time, so KOA departures were 6.1 points above the national departure figure.

A year earlier, in October 2024, the airport had 1,365 departures with 89.6% leaving on time: a change of −3.5 points, with flights down 7%.

Flights arriving at KOA that month were on time 82.6% of the time (1,267 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 52%, air carrier 27% and national aviation system 21%.

On time 85.2%
Arrived 15+ minutes late 13.0%
Cancelled 1.5%
Diverted 0.2%

Every scheduled departure from KOA in October 2025, judged by arrival at the destination.

October 2025 against a year earlier, the airport's year and the nation

Measure	Oct 2025	Oct 2024	KOA, 12 months to Jul 2026	All reported flights, Oct 2025
Departed on time	86.1%	89.6%	85.7%	80.0%
Arrived on time	85.2%	89.2%	84.7%	79.1%
Cancelled	1.5%	0.7%	1.1%	0.5%
Average departure delay (late minutes only)	9.3 min	6.8 min	8.7 min	13.9 min
Scheduled departures a day	42	46	44	20,195
Scheduled departures	1,267	1,365	16,052	605,844

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
HA Hawaiian Airlines	576	45%	87.3%	3.7 min	1.4%
WN Southwest Airlines	244	19%	94.3%	-8.0 min	0.8%
AS Alaska Airlines	215	17%	64.7%	15.1 min	3.3%
UA United Airlines	112	9%	84.8%	-11.3 min	1.8%
DL Delta Air Lines	62	5%	96.8%	-19.2 min	0.0%
AA American Airlines	58	5%	91.4%	-11.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
KOA–HNL	Kona to Honolulu	590	89.5%	0.0 min	1.2%
KOA–OGG	Kona to Kahului	124	89.5%	4.1 min	1.6%
KOA–SEA	Kona to Seattle	122	82.0%	-1.6 min	3.3%
KOA–LAX	Kona to Los Angeles	120	85.8%	-7.3 min	1.7%
KOA–SFO	Kona to San Francisco	67	70.1%	8.1 min	1.5%
KOA–SMF	Kona to Sacramento	44	88.6%	4.2 min	0.0%
KOA–DEN	Kona to Denver	31	90.3%	-24.3 min	3.2%
KOA–LAS	Kona to Las Vegas	31	96.8%	-23.5 min	0.0%
KOA–LIH	Kona to Lihue	31	80.6%	7.5 min	3.2%
KOA–PDX	Kona to Portland	31	67.7%	24.0 min	0.0%
KOA–PHX	Kona to Phoenix	31	93.5%	-10.9 min	0.0%
KOA–SAN	Kona to San Diego	31	45.2%	17.0 min	3.2%

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), October 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2025	Minutes
Air carrier	27.0%	34.0%	2,684
Late-arriving aircraft	52.0%	39.7%	5,159
National Aviation System	20.8%	22.9%	2,065
Extreme weather	0.2%	3.3%	15
Security	0.0%	0.1%	0

9,923 delay minutes on 165 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 KOA on time in October 2025?

86.1% of 1,267 scheduled domestic departures left less than 15 minutes late, and 85.2% reached their destination on time. The national figures that month were 80.0% and 79.1%.

How does that compare with a year earlier?

In October 2024, 89.6% of 1,365 departures left on time and 0.7% were cancelled, against 86.1% and 1.5% in October 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for KOA · methodology · corrections.