Long Island MacArthur in June 2024

75.1%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 June 2024, reporting carriers scheduled 397 domestic departures from Long Island MacArthur (ISP). 75.1% left less than 15 minutes late and 80.4% reached their destination on time; 1.8% were cancelled.

Nationally that month, 73.7% of flights departed on time and 73.9% arrived on time, so ISP departures were 1.4 points above the national departure figure.

Flights arriving at ISP that month were on time 72.3% of the time (397 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 45%, air carrier 33% and national aviation system 17%.

On time 80.4%
Arrived 15+ minutes late 17.6%
Cancelled 1.8%
Diverted 0.3%

Every scheduled departure from ISP in June 2024, judged by arrival at the destination.

June 2024 against a year earlier, the airport's year and the nation

Measure	Jun 2024	Year earlier	ISP, 12 months to Jul 2026	All reported flights, Jun 2024
Departed on time	75.1%	—	73.7%	73.7%
Arrived on time	80.4%	—	73.6%	73.9%
Cancelled	1.8%	—	2.1%	1.3%
Average departure delay (late minutes only)	18.1 min	—	18.8 min	19.7 min
Scheduled departures a day	13	—	14	20,371
Scheduled departures	397	—	4,966	611,132

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	247	62%	83.8%	2.2 min	0.4%
F9 Frontier Airlines	150	38%	74.7%	2.0 min	4.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ISP–BWI	Islip to Baltimore	121	86.0%	3.3 min	0.0%
ISP–MCO	Islip to Orlando	99	72.7%	4.8 min	3.0%
ISP–PBI	Islip to West Palm Beach/Palm Beach	73	86.3%	-7.1 min	2.7%
ISP–TPA	Islip to Tampa	31	74.2%	16.0 min	0.0%
ISP–FLL	Islip to Fort Lauderdale	30	86.7%	-10.2 min	0.0%
ISP–MYR	Islip to Myrtle Beach	30	66.7%	9.7 min	6.7%
ISP–ATL	Islip to Atlanta	13	84.6%	2.1 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), June 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2024	Minutes
Air carrier	33.0%	34.4%	1,841
Late-arriving aircraft	44.8%	41.5%	2,499
National Aviation System	16.5%	17.8%	922
Extreme weather	5.7%	6.0%	320
Security	0.0%	0.2%	0

5,582 delay minutes on 70 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 ISP on time in June 2024?

75.1% of 397 scheduled domestic departures left less than 15 minutes late, and 80.4% reached their destination on time. The national figures that month were 73.7% and 73.9%.

How does that compare with a year earlier?

June 2023 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 June 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for ISP · methodology · corrections.