Airports · Long Island MacArthur Airport
Flights from Islip (ISP)
Airlines flew 7,097 departures out of Long Island MacArthur Airport (ISP) carrying 799,637 passengers over the 12 months through April 2026. Here's what actually flew — the busiest routes, the carriers, and the aircraft — from US DOT T-100 filings.
What flies from Islip
US DOT T-100 · filed dataWhat airlines actually flew out of Islip — departures, seats, and passengers filed with the US DOT (T-100) over the trailing 12 months, not a schedule.
Departures
7,097
April 2026
Seats flown
1,034,562
Passengers
799,637
Load factor
77.3%
passengers ÷ seats
Busiest routes from Islip
Where flights from Islip go most, by departures over the trailing 12 months.
1,398 departures · 204,414 passengers
84.4%
Load
1,244 departures · 164,121 passengers
78.6%
Load
1,187 departures · 137,003 passengers
71.5%
Load
757 departures · 2,532 passengers
37.0%
Load
503 departures · 70,701 passengers
78.6%
Load
392 departures · 53,159 passengers
83.3%
Load
316 departures · 38,045 passengers
80.1%
Load
165 departures · 17,567 passengers
77.7%
Load
152 departures · 14,491 passengers
80.3%
Load
146 departures · 18,277 passengers
79.6%
Load
143 departures · 14,195 passengers
72.8%
Load
129 departures · 14,264 passengers
76.7%
Load
123 departures · 12,029 passengers
72.0%
Load
121 departures · 16,910 passengers
71.3%
Load
95 departures · 4,966 passengers
36.2%
Load
Airlines at Islip
Ranked by seats flown — the capacity each carrier actually operated out of Islip.
- WN
450,252 seats · 75.3% load
43.5%
Share
- B6
223,006 seats · 83.7% load
21.6%
Share
- F9
183,046 seats · 77.8% load
17.7%
Share
- MX
128,537 seats · 76.8% load
12.4%
Share
- XP
39,661 seats · 72.3% load
3.8%
Share
- 9K
Cape Air
6,840 seats · 37.0% load
0.7%
Share
- SY
1,488 seats · 34.6% load
0.1%
Share
- G4
1,056 seats · 66.0% load
0.1%
Share
- DL
189 seats · 97.9% load
0.0%
Share
- GCA
180 seats · 0.0% load
0.0%
Share
Aircraft flown from Islip
Aircraft types by share of departures — what actually operated, not what's based here.
1,367 departures · 84.2% load
19.3%
Share
1,137 departures · 74.6% load
16.0%
Share
977 departures · 73.5% load
13.8%
Share
902 departures · 76.9% load
12.7%
Share
853 departures · 76.9% load
12.0%
Share
Cessna C-402
757 departures · 37.0% load
10.7%
Share
639 departures · 81.8% load
9.0%
Share
197 departures · 67.9% load
2.8%
Share
169 departures · 73.3% load
2.4%
Share
67 departures · 73.3% load
0.9%
Share
Pilatus PC-12
15 departures · 48.3% load
0.2%
Share
Bombardier Challenger 604
5 departures · 15.6% load
0.1%
Share
Monthly departures from Islip
Monthly departures from Islip, trailing 12 months through April 2026. Bars scale to the busiest month.
May 2025
603 departures · 67,069 passengers
68.4%
Load
June 2025
541 departures · 61,694 passengers
71.3%
Load
July 2025
673 departures · 74,351 passengers
82.7%
Load
August 2025
636 departures · 72,745 passengers
86.2%
Load
September 2025
550 departures · 57,199 passengers
78.9%
Load
October 2025
571 departures · 63,493 passengers
79.8%
Load
November 2025
600 departures · 63,256 passengers
73.8%
Load
December 2025
658 departures · 77,950 passengers
82.2%
Load
January 2026
606 departures · 62,326 passengers
73.3%
Load
February 2026
520 departures · 63,009 passengers
78.1%
Load
March 2026
540 departures · 66,864 passengers
82.1%
Load
April 2026
599 departures · 69,681 passengers
72.7%
Load
Source: US DOT Bureau of Transportation Statistics, T-100 Segment. Data through April 2026. The DOT publishes roughly three months in arrears.