Long Island MacArthur in March 2024

70.5%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 2024, reporting carriers scheduled 468 domestic departures from Long Island MacArthur (ISP). 70.5% left less than 15 minutes late and 72.2% reached their destination on time; 2.1% were cancelled.

Nationally that month, 78.5% of flights departed on time and 78.3% arrived on time, so ISP departures were 8.0 points below the national departure figure.

Flights arriving at ISP that month were on time 71.3% of the time (467 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 53%, national aviation system 35% and air carrier 7%.

On time 72.2%
Arrived 15+ minutes late 25.6%
Cancelled 2.1%
Diverted 0.0%

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

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

Measure	Mar 2024	Year earlier	ISP, 12 months to Jul 2026	All reported flights, Mar 2024
Departed on time	70.5%	—	73.7%	78.5%
Arrived on time	72.2%	—	73.6%	78.3%
Cancelled	2.1%	—	2.1%	0.9%
Average departure delay (late minutes only)	21.2 min	—	18.8 min	15.7 min
Scheduled departures a day	16	—	14	19,726
Scheduled departures	468	—	4,966	591,767

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	276	59%	78.6%	4.7 min	1.1%
F9 Frontier Airlines	192	41%	63.0%	12.4 min	3.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
ISP–MCO	Islip to Orlando	132	70.5%	8.4 min	3.0%
ISP–BWI	Islip to Baltimore	108	84.3%	-0.5 min	0.0%
ISP–PBI	Islip to West Palm Beach/Palm Beach	97	72.2%	13.5 min	3.1%
ISP–TPA	Islip to Tampa	61	60.7%	15.0 min	1.6%
ISP–RSW	Islip to Fort Myers	37	64.9%	7.3 min	5.4%
ISP–FLL	Islip to Fort Lauderdale	33	69.7%	4.5 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), March 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2024	Minutes
Air carrier	7.2%	32.1%	612
Late-arriving aircraft	53.4%	42.1%	4,514
National Aviation System	35.0%	21.4%	2,954
Extreme weather	4.3%	4.2%	366
Security	0.0%	0.2%	0

8,446 delay minutes on 120 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 March 2024?

70.5% of 468 scheduled domestic departures left less than 15 minutes late, and 72.2% reached their destination on time. The national figures that month were 78.5% and 78.3%.

How does that compare with a year earlier?

March 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 March 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.