Ellison Onizuka Kona International at Keahole in September 2023

92.3%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 September 2023, reporting carriers scheduled 1,414 domestic departures from Ellison Onizuka Kona International at Keahole (KOA). 92.3% left less than 15 minutes late and 91.5% reached their destination on time; 0.0% were cancelled.

Nationally that month, 80.5% of flights departed on time and 80.1% arrived on time, so KOA departures were 11.8 points above the national departure figure.

Flights arriving at KOA that month were on time 90.3% of the time (1,413 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 47%, air carrier 43% and national aviation system 10%.

On time 91.5%
Arrived 15+ minutes late 8.4%
Cancelled 0.0%
Diverted 0.1%

Every scheduled departure from KOA in September 2023, judged by arrival at the destination.

September 2023 against a year earlier, the airport's year and the nation

Measure	Sep 2023	Year earlier	KOA, 12 months to Jul 2026	All reported flights, Sep 2023
Departed on time	92.3%	—	85.7%	80.5%
Arrived on time	91.5%	—	84.7%	80.1%
Cancelled	0.0%	—	1.1%	1.2%
Average departure delay (late minutes only)	4.7 min	—	8.7 min	14.1 min
Scheduled departures a day	47	—	44	18,978
Scheduled departures	1,414	—	16,052	569,338

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
HA Hawaiian Airlines	680	48%	91.5%	1.0 min	0.0%
WN Southwest Airlines	308	22%	93.5%	-3.7 min	0.0%
AS Alaska Airlines	180	13%	87.8%	-4.0 min	0.0%
UA United Airlines	126	9%	95.2%	-8.3 min	0.0%
AA American Airlines	60	4%	96.7%	-22.8 min	0.0%
DL Delta Air Lines	60	4%	80.0%	1.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
KOA–HNL	Kona to Honolulu	680	91.9%	0.1 min	0.0%
KOA–OGG	Kona to Kahului	154	89.6%	2.5 min	0.0%
KOA–LAX	Kona to Los Angeles	126	94.4%	-13.9 min	0.0%
KOA–SEA	Kona to Seattle	120	86.7%	-2.6 min	0.0%
KOA–SFO	Kona to San Francisco	64	92.2%	3.0 min	0.0%
KOA–SJC	Kona to San Jose	60	96.7%	-5.9 min	0.0%
KOA–DEN	Kona to Denver	30	100.0%	-23.7 min	0.0%
KOA–LAS	Kona to Las Vegas	30	90.0%	-8.7 min	0.0%
KOA–LIH	Kona to Lihue	30	96.7%	3.3 min	0.0%
KOA–OAK	Kona to Oakland	30	93.3%	-5.0 min	0.0%
KOA–PDX	Kona to Portland	30	73.3%	0.7 min	0.0%
KOA–PHX	Kona to Phoenix	30	93.3%	-17.2 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), September 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2023	Minutes
Air carrier	42.8%	36.4%	2,331
Late-arriving aircraft	46.7%	38.3%	2,544
National Aviation System	10.1%	19.9%	551
Extreme weather	0.0%	5.1%	0
Security	0.4%	0.2%	22

5,448 delay minutes on 119 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 September 2023?

92.3% of 1,414 scheduled domestic departures left less than 15 minutes late, and 91.5% reached their destination on time. The national figures that month were 80.5% and 80.1%.

How does that compare with a year earlier?

September 2022 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 September 2023; 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.