Ellison Onizuka Kona International at Keahole in December 2023

86.5%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 December 2023, reporting carriers scheduled 1,463 domestic departures from Ellison Onizuka Kona International at Keahole (KOA). 86.5% left less than 15 minutes late and 87.6% reached their destination on time; 1.0% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so KOA departures were 3.4 points above the national departure figure.

Flights arriving at KOA that month were on time 81.1% of the time (1,463 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 51%, air carrier 39% and national aviation system 10%.

On time 87.6%
Arrived 15+ minutes late 11.2%
Cancelled 1.0%
Diverted 0.1%

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

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

Measure	Dec 2023	Year earlier	KOA, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	86.5%	—	85.7%	83.1%
Arrived on time	87.6%	—	84.7%	83.8%
Cancelled	1.0%	—	1.1%	0.4%
Average departure delay (late minutes only)	7.1 min	—	8.7 min	11.6 min
Scheduled departures a day	49	—	44	19,013
Scheduled departures	1,463	—	16,052	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
HA Hawaiian Airlines	681	47%	87.2%	2.1 min	1.5%
WN Southwest Airlines	290	20%	93.4%	-7.8 min	0.3%
AS Alaska Airlines	199	14%	79.4%	0.8 min	0.0%
UA United Airlines	158	11%	82.9%	-9.3 min	1.9%
AA American Airlines	74	5%	94.6%	-24.0 min	1.4%
DL Delta Air Lines	61	4%	95.1%	-11.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
KOA–HNL	Kona to Honolulu	712	86.9%	1.8 min	1.3%
KOA–LAX	Kona to Los Angeles	135	89.6%	-17.0 min	0.7%
KOA–OGG	Kona to Kahului	124	95.2%	-1.8 min	0.8%
KOA–SEA	Kona to Seattle	123	85.4%	-5.6 min	0.0%
KOA–SFO	Kona to San Francisco	80	82.5%	-10.6 min	2.5%
KOA–PHX	Kona to Phoenix	43	93.0%	-17.9 min	2.3%
KOA–SJC	Kona to San Jose	42	81.0%	-7.4 min	0.0%
KOA–DEN	Kona to Denver	31	87.1%	-11.2 min	3.2%
KOA–LAS	Kona to Las Vegas	31	96.8%	-19.8 min	0.0%
KOA–LIH	Kona to Lihue	31	100.0%	-3.1 min	0.0%
KOA–OAK	Kona to Oakland	31	96.8%	-22.4 min	0.0%
KOA–PDX	Kona to Portland	31	64.5%	35.5 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), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	39.0%	37.1%	3,068
Late-arriving aircraft	50.5%	38.8%	3,979
National Aviation System	9.5%	17.6%	748
Extreme weather	0.5%	6.2%	39
Security	0.5%	0.3%	41

7,875 delay minutes on 164 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 December 2023?

86.5% of 1,463 scheduled domestic departures left less than 15 minutes late, and 87.6% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 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 December 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.