Ellison Onizuka Kona International at Keahole in March 2026

78.1%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 March 2026, reporting carriers scheduled 1,435 domestic departures from Ellison Onizuka Kona International at Keahole (KOA). 78.1% left less than 15 minutes late and 74.8% reached their destination on time; 3.4% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so KOA departures were 5.3 points above the national departure figure.

A year earlier, in March 2025, the airport had 1,397 departures with 86.2% leaving on time: a change of −8.1 points, with flights up 3%.

Flights arriving at KOA that month were on time 75.7% of the time (1,434 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 24% and extreme weather 19%.

On time 74.8%
Arrived 15+ minutes late 21.7%
Cancelled 3.4%
Diverted 0.1%

Every scheduled departure from KOA in March 2026, judged by arrival at the destination.

March 2026 against a year earlier, the airport's year and the nation

Measure	Mar 2026	Mar 2025	KOA, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	78.1%	86.2%	85.7%	72.8%
Arrived on time	74.8%	85.0%	84.7%	73.2%
Cancelled	3.4%	1.9%	1.1%	2.9%
Average departure delay (late minutes only)	14.8 min	11.8 min	8.7 min	20.3 min
Scheduled departures a day	48	47	44	20,403
Scheduled departures	1,435	1,397	16,052	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AS Alaska Airlines	851	59%	72.0%	13.0 min	2.4%
WN Southwest Airlines	247	17%	84.2%	2.7 min	1.6%
UA United Airlines	156	11%	72.4%	-1.8 min	7.7%
DL Delta Air Lines	91	6%	71.4%	-1.6 min	9.9%
AA American Airlines	90	6%	82.2%	17.4 min	4.4%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
KOA–HNL	Kona to Honolulu	628	73.9%	14.0 min	3.8%
KOA–LAX	Kona to Los Angeles	136	76.5%	8.8 min	5.1%
KOA–OGG	Kona to Kahului	124	75.8%	12.5 min	0.0%
KOA–SEA	Kona to Seattle	124	83.9%	-13.5 min	2.4%
KOA–SFO	Kona to San Francisco	100	75.0%	-1.6 min	5.0%
KOA–SMF	Kona to Sacramento	44	72.7%	11.5 min	0.0%
KOA–DEN	Kona to Denver	35	54.3%	8.6 min	11.4%
KOA–LAS	Kona to Las Vegas	31	80.6%	1.9 min	0.0%
KOA–LIH	Kona to Lihue	31	90.3%	1.6 min	0.0%
KOA–PDX	Kona to Portland	31	71.0%	1.1 min	0.0%
KOA–PHX	Kona to Phoenix	31	80.6%	30.9 min	6.5%
KOA–SAN	Kona to San Diego	31	61.3%	15.5 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), March 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	24.1%	33.5%	5,099
Late-arriving aircraft	44.1%	39.3%	9,349
National Aviation System	12.7%	21.0%	2,688
Extreme weather	19.1%	5.9%	4,057
Security	0.0%	0.2%	0

21,193 delay minutes on 311 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 March 2026?

78.1% of 1,435 scheduled domestic departures left less than 15 minutes late, and 74.8% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 86.2% of 1,397 departures left on time and 1.9% were cancelled, against 78.1% and 3.4% in March 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; 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.