Daniel K Inouye International in August 2025

88.8%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 2025, reporting carriers scheduled 4,921 domestic departures from Daniel K Inouye International (HNL). 88.8% left less than 15 minutes late and 88.4% reached their destination on time; 0.2% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so HNL departures were 12.0 points above the national departure figure.

A year earlier, in August 2024, the airport had 5,270 departures with 87.4% leaving on time: a change of +1.4 points, with flights down 7%.

Flights arriving at HNL that month were on time 85.5% of the time (4,920 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 67%, late-arriving aircraft 28% and national aviation system 4%.

On time 88.4%
Arrived 15+ minutes late 11.3%
Cancelled 0.2%
Diverted 0.0%

Every scheduled departure from HNL in August 2025, judged by arrival at the destination.

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

Measure	Aug 2025	Aug 2024	HNL, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	88.8%	87.4%	83.5%	76.8%
Arrived on time	88.4%	88.8%	82.0%	76.3%
Cancelled	0.2%	1.1%	0.9%	1.1%
Average departure delay (late minutes only)	7.6 min	8.0 min	10.4 min	17.6 min
Scheduled departures a day	164	176	159	20,079
Scheduled departures	4,921	5,270	58,088	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
HA Hawaiian Airlines	2,846	58%	87.4%	3.8 min	0.1%
WN Southwest Airlines	1,024	21%	95.3%	-6.6 min	0.3%
UA United Airlines	426	9%	82.6%	4.2 min	0.5%
DL Delta Air Lines	310	6%	89.0%	-3.3 min	0.6%
AA American Airlines	191	4%	90.1%	0.0 min	0.0%
AS Alaska Airlines	124	3%	70.2%	9.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HNL–OGG	Honolulu to Kahului	901	91.7%	-0.5 min	0.2%
HNL–LIH	Honolulu to Lihue	682	92.8%	-1.2 min	0.4%
HNL–KOA	Honolulu to Kona	625	92.2%	0.5 min	0.0%
HNL–ITO	Honolulu to Hilo	534	93.4%	-0.7 min	0.0%
HNL–LAX	Honolulu to Los Angeles	460	83.9%	4.1 min	0.2%
HNL–SEA	Honolulu to Seattle	248	74.6%	10.9 min	0.4%
HNL–SFO	Honolulu to San Francisco	202	78.7%	6.7 min	0.5%
HNL–LAS	Honolulu to Las Vegas	171	89.5%	-1.8 min	0.6%
HNL–SAN	Honolulu to San Diego	147	86.4%	3.6 min	0.0%
HNL–PHX	Honolulu to Phoenix	124	92.7%	1.1 min	0.0%
HNL–PDX	Honolulu to Portland	84	76.2%	16.4 min	0.0%
HNL–SJC	Honolulu to San Jose	66	92.4%	-4.5 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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	67.1%	33.1%	20,607
Late-arriving aircraft	27.8%	40.5%	8,529
National Aviation System	4.1%	19.2%	1,259
Extreme weather	0.2%	7.0%	55
Security	0.8%	0.1%	247

30,697 delay minutes on 557 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 HNL on time in August 2025?

88.8% of 4,921 scheduled domestic departures left less than 15 minutes late, and 88.4% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 87.4% of 5,270 departures left on time and 1.1% were cancelled, against 88.8% and 0.2% in August 2025.

Provenance

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