Long Island MacArthur in November 2023

84.6%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 November 2023, reporting carriers scheduled 462 domestic departures from Long Island MacArthur (ISP). 84.6% left less than 15 minutes late and 84.8% reached their destination on time; 0.2% were cancelled.

Nationally that month, 86.0% of flights departed on time and 86.2% arrived on time, so ISP departures were 1.4 points below the national departure figure.

Flights arriving at ISP that month were on time 83.5% of the time (462 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 45%, late-arriving aircraft 35% and national aviation system 10%.

On time 84.8%
Arrived 15+ minutes late 14.9%
Cancelled 0.2%
Diverted 0.0%

Every scheduled departure from ISP in November 2023, judged by arrival at the destination.

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

Measure	Nov 2023	Year earlier	ISP, 12 months to Jul 2026	All reported flights, Nov 2023
Departed on time	84.6%	—	73.7%	86.0%
Arrived on time	84.8%	—	73.6%	86.2%
Cancelled	0.2%	—	2.1%	0.1%
Average departure delay (late minutes only)	12.9 min	—	18.8 min	9.4 min
Scheduled departures a day	15	—	14	18,793
Scheduled departures	462	—	4,966	563,777

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	295	64%	87.8%	-3.0 min	0.0%
F9 Frontier Airlines	167	36%	79.6%	12.7 min	0.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ISP–BWI	Islip to Baltimore	136	91.9%	-6.6 min	0.0%
ISP–MCO	Islip to Orlando	124	79.0%	6.6 min	0.0%
ISP–PBI	Islip to West Palm Beach/Palm Beach	90	88.9%	-0.2 min	0.0%
ISP–TPA	Islip to Tampa	69	85.5%	0.3 min	0.0%
ISP–FLL	Islip to Fort Lauderdale	20	45.0%	85.6 min	0.0%
ISP–RSW	Islip to Fort Myers	15	86.7%	-21.3 min	6.7%
ISP–MYR	Islip to Myrtle Beach	4	100.0%	-14.0 min	0.0%
ISP–RDU	Islip to Raleigh/Durham	4	100.0%	-12.0 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), November 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Nov 2023	Minutes
Air carrier	44.5%	42.5%	2,401
Late-arriving aircraft	35.0%	37.3%	1,887
National Aviation System	10.3%	16.2%	558
Extreme weather	8.6%	3.7%	466
Security	1.6%	0.3%	85

5,397 delay minutes on 69 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 November 2023?

84.6% of 462 scheduled domestic departures left less than 15 minutes late, and 84.8% reached their destination on time. The national figures that month were 86.0% and 86.2%.

How does that compare with a year earlier?

November 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 November 2023; 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.