🇺🇸
How Busy Is Long Island Mac Arthur Airport? ISP
Islip, United States. Departures peak at 17:00 local, averaging 3.3 flights per hour.
Window: last 60 days. Last refreshed: 2026-09-22. Schedule coverage: 4 days observed.
Peak departure hour
17:00
3.3 flights/hr
Quietest active hour
09:00
1 flights/hr
Traffic score
85/100
Relative volume
Departures by hour (local time)
Avg per day, last 60 daysTotal: 24.7 avg departures per day.
Weekday vs weekend departure pattern
Weekday avg per hour
Weekend avg per hour
Arrivals by hour (local time)
Avg per day, last 60 daysPeak arrival hour: 16:00 local (3 flights/hr). Total: 23.5 avg arrivals/day.
Top airlines
- 1. Southwest Airlines (WN) 16
- 2. Breeze Aviation Group (MX) 12
- 3. Hyannis Air Service, Inc. d/b/a Cape Air (9K) 7
- 4. Jetblue Airways (B6) 7
- 5. Frontier Airlines, (F9) 6
Top destinations
- 1. 🇺🇸 Orlando (MCO) 13
- 2. 🇺🇸 Baltimore (BWI) 9
- 3. 🇺🇸 Boston (BOS) 7
- 4. DJT (DJT) 6
- 5. 🇺🇸 Concord (USA) 3
Frequently asked
- What's the busiest hour for departures at ISP?
- Departures from Long Island Mac Arthur Airport peak at 17:00 local time, averaging 3.3 flights per hour over the past 60 days.
- What's the quietest hour to fly out of ISP?
- The quietest hour with regular service is 09:00 local time, averaging 1 flights per hour.
- Which airline operates the most flights from ISP?
- Southwest Airlines (WN) is the largest operator at Long Island Mac Arthur Airport, with 16 observed departures in the past 60 days.
- What's the most popular destination from ISP?
- Orlando (MCO) is the most-flown destination, with 13 observed departures in the past 60 days.
Tracking a flight through ISP?
Forward your booking and TripWaffle alerts you to gate changes, delays and baggage carousels - so you don't have to keep refreshing.
Get realtime alerts
Free to start. No card required.