Long Island MacArthur in November 2025

80.0%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 2025, reporting carriers scheduled 395 domestic departures from Long Island MacArthur (ISP). 80.0% left less than 15 minutes late and 76.5% reached their destination on time; 1.0% were cancelled.

Nationally that month, 78.1% of flights departed on time and 77.3% arrived on time, so ISP departures were 1.9 points above the national departure figure.

A year earlier, in November 2024, the airport had 349 departures with 86.8% leaving on time: a change of −6.8 points, with flights up 13%.

Flights arriving at ISP that month were on time 78.8% of the time (396 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, national aviation system 46%, late-arriving aircraft 38% and air carrier 16%.

On time 76.5%
Arrived 15+ minutes late 22.5%
Cancelled 1.0%
Diverted 0.0%

Every scheduled departure from ISP in November 2025, judged by arrival at the destination.

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

Measure	Nov 2025	Nov 2024	ISP, 12 months to Jul 2026	All reported flights, Nov 2025
Departed on time	80.0%	86.8%	73.7%	78.1%
Arrived on time	76.5%	92.0%	73.6%	77.3%
Cancelled	1.0%	0.0%	2.1%	2.5%
Average departure delay (late minutes only)	15.1 min	10.2 min	18.8 min	15.6 min
Scheduled departures a day	13	12	14	19,018
Scheduled departures	395	349	4,966	570,550

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	219	55%	80.4%	5.7 min	0.9%
B6 JetBlue Airways	106	27%	69.8%	11.7 min	1.9%
F9 Frontier Airlines	70	18%	74.3%	5.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ISP–MCO	Islip to Orlando	130	75.4%	8.8 min	0.0%
ISP–PBI	Islip to West Palm Beach/Palm Beach	100	74.0%	10.8 min	2.0%
ISP–BWI	Islip to Baltimore	90	85.6%	-0.3 min	2.2%
ISP–FLL	Islip to Fort Lauderdale	33	57.6%	19.1 min	0.0%
ISP–TPA	Islip to Tampa	31	83.9%	0.1 min	0.0%
ISP–MYR	Islip to Myrtle Beach	11	72.7%	0.1 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), November 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Nov 2025	Minutes
Air carrier	16.1%	30.2%	986
Late-arriving aircraft	37.9%	38.3%	2,321
National Aviation System	46.0%	26.7%	2,817
Extreme weather	0.0%	4.6%	0
Security	0.0%	0.1%	0

6,124 delay minutes on 89 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 2025?

80.0% of 395 scheduled domestic departures left less than 15 minutes late, and 76.5% reached their destination on time. The national figures that month were 78.1% and 77.3%.

How does that compare with a year earlier?

In November 2024, 86.8% of 349 departures left on time and 0.0% were cancelled, against 80.0% and 1.0% in November 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for November 2025; 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.