Airports › Islip (ISP) › May 2024
Airport month · May 2024
Long Island MacArthur in May 2024
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 May 2024, reporting carriers scheduled 417 domestic departures from Long Island MacArthur (ISP). 73.9% left less than 15 minutes late and 79.6% reached their destination on time; 1.9% were cancelled.
Nationally that month, 73.4% of flights departed on time and 72.3% arrived on time, so ISP departures were 0.5 points above the national departure figure.
Flights arriving at ISP that month were on time 69.8% of the time (417 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 61%, national aviation system 23% and air carrier 14%.
- On time 79.6%
- Arrived 15+ minutes late 18.2%
- Cancelled 1.9%
- Diverted 0.2%
May 2024 against a year earlier, the airport's year and the nation
| Measure | May 2024 | Year earlier | ISP, 12 months to Jul 2026 | All reported flights, May 2024 |
|---|---|---|---|---|
| Departed on time | 73.9% | — | 73.7% | 73.4% |
| Arrived on time | 79.6% | — | 73.6% | 72.3% |
| Cancelled | 1.9% | — | 2.1% | 1.4% |
| Average departure delay (late minutes only) | 17.3 min | — | 18.8 min | 20.8 min |
| Scheduled departures a day | 14 | — | 14 | 20,325 |
| Scheduled departures | 417 | — | 4,966 | 609,743 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| WN Southwest Airlines | 246 | 59% | 83.7% | 0.8 min | 0.0% |
| F9 Frontier Airlines | 171 | 41% | 73.7% | 4.0 min | 4.7% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| ISP–BWI | Islip to Baltimore | 116 | 82.8% | 2.7 min | 0.0% |
| ISP–MCO | Islip to Orlando | 110 | 80.0% | 4.1 min | 0.9% |
| ISP–PBI | Islip to West Palm Beach/Palm Beach | 83 | 81.9% | 2.0 min | 0.0% |
| ISP–TPA | Islip to Tampa | 33 | 78.8% | -1.1 min | 0.0% |
| ISP–FLL | Islip to Fort Lauderdale | 31 | 80.6% | -1.7 min | 3.2% |
| ISP–MYR | Islip to Myrtle Beach | 31 | 74.2% | -9.0 min | 12.9% |
| ISP–ATL | Islip to Atlanta | 7 | 42.9% | 28.6 min | 28.6% |
| ISP–RSW | Islip to Fort Myers | 6 | 50.0% | 19.3 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left ISP on time in May 2024?
73.9% of 417 scheduled domestic departures left less than 15 minutes late, and 79.6% reached their destination on time. The national figures that month were 73.4% and 72.3%.
How does that compare with a year earlier?
May 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 May 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.