Ellison Onizuka Kona International at Keahole in August 2023

86.4%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 August 2023, reporting carriers scheduled 1,512 domestic departures from Ellison Onizuka Kona International at Keahole (KOA). 86.4% left less than 15 minutes late and 88.1% reached their destination on time; 0.6% were cancelled.

Nationally that month, 76.7% of flights departed on time and 76.9% arrived on time, so KOA departures were 9.7 points above the national departure figure.

Flights arriving at KOA that month were on time 83.4% of the time (1,512 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 62%, air carrier 31% and national aviation system 6%.

On time 88.1%
Arrived 15+ minutes late 11.2%
Cancelled 0.6%
Diverted 0.1%

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

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

Measure	Aug 2023	Year earlier	KOA, 12 months to Jul 2026	All reported flights, Aug 2023
Departed on time	86.4%	—	85.7%	76.7%
Arrived on time	88.1%	—	84.7%	76.9%
Cancelled	0.6%	—	1.1%	1.5%
Average departure delay (late minutes only)	7.5 min	—	8.7 min	17.3 min
Scheduled departures a day	50	—	44	20,100
Scheduled departures	1,512	—	16,052	602,987

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
HA Hawaiian Airlines	685	45%	87.6%	1.8 min	1.0%
WN Southwest Airlines	372	25%	88.7%	-1.4 min	0.3%
AS Alaska Airlines	186	12%	80.1%	2.9 min	0.0%
UA United Airlines	145	10%	91.7%	-5.8 min	0.0%
AA American Airlines	62	4%	98.4%	-18.9 min	0.0%
DL Delta Air Lines	62	4%	95.2%	-13.7 min	1.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
KOA–HNL	Kona to Honolulu	685	87.4%	1.2 min	1.2%
KOA–OGG	Kona to Kahului	186	87.1%	1.9 min	0.0%
KOA–LAX	Kona to Los Angeles	170	91.8%	-7.8 min	0.6%
KOA–SEA	Kona to Seattle	124	81.5%	0.2 min	0.0%
KOA–SFO	Kona to San Francisco	66	87.9%	3.8 min	0.0%
KOA–SJC	Kona to San Jose	62	80.6%	4.3 min	0.0%
KOA–DEN	Kona to Denver	31	96.8%	-19.4 min	0.0%
KOA–LAS	Kona to Las Vegas	31	93.5%	-4.9 min	0.0%
KOA–LIH	Kona to Lihue	31	96.8%	-0.4 min	0.0%
KOA–OAK	Kona to Oakland	31	100.0%	-11.4 min	0.0%
KOA–PDX	Kona to Portland	31	83.9%	-0.2 min	0.0%
KOA–PHX	Kona to Phoenix	31	100.0%	-20.3 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), August 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2023	Minutes
Air carrier	31.2%	36.7%	2,650
Late-arriving aircraft	62.3%	42.2%	5,291
National Aviation System	5.7%	15.7%	480
Extreme weather	0.0%	5.1%	0
Security	0.8%	0.2%	65

8,486 delay minutes on 170 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 August 2023?

86.4% of 1,512 scheduled domestic departures left less than 15 minutes late, and 88.1% reached their destination on time. The national figures that month were 76.7% and 76.9%.

How does that compare with a year earlier?

August 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 August 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.