Boston (BOS) to Islip (ISP)
Flight time
≈ 1h 06m
Bearing
226° SW
Boston (BOS) to Islip (ISP) is 153 miles (246 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
Look up a route, or build a trip
Change the airports, or add stops for a multi-leg trip.
What actually flies BOS–ISP
Filed traffic dataIn July 2026, Cape Air operated the most departures, one of 2 carriers flying nonstop BOS–ISP; the Cessna C-402 was the most common aircraft at 99% of departures; flights ran 63% full.
Departures
186
July 2026
Seats
1,673
both directions
Passengers
1,062
both directions
Load factor
63.5%
RPM ÷ ASM
Who flies BOS–ISP?
Cape Air operated the most nonstop BOS–ISP departures in July 2026 (185), one of 2 carriers on the route.
- 9K
Cape Air
185 departures · 1,665 seats
Share of departures99.5%63.7%
Load
- TJ
Tradewind Aviation
1 departures · 8 seats
Share of departures0.5%12.5%
Load
What plane flies BOS–ISP?
In July 2026, the Cessna C-402 flew 99% of BOS–ISP departures — more than any other aircraft type.
- Cessna C-402
185 departures · 63.7% load
99.5% - Pilatus PC-12
1 departures · 12.5% load
0.5%
How has BOS–ISP traffic changed?
Nonstop BOS–ISP departures fell from 249 in August 2025 to 186 in July 2026.
Monthly nonstop BOS–ISP traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
249 departures · 1,121 passengers
50.0%
Load
September 2025
216 departures · 802 passengers
41.3%
Load
October 2025
181 departures · 633 passengers
38.9%
Load
November 2025
150 departures · 407 passengers
30.1%
Load
December 2025
161 departures · 594 passengers
37.4%
Load
January 2026
157 departures · 318 passengers
22.5%
Load
February 2026
47 departures · 131 passengers
31.0%
Load
March 2026
58 departures · 215 passengers
41.2%
Load
April 2026
70 departures · 254 passengers
40.3%
Load
May 2026
188 departures · 786 passengers
43.1%
Load
June 2026
191 departures · 905 passengers
52.6%
Load
July 2026
186 departures · 1,062 passengers
63.5%
Load
By direction
Each direction is filed separately — they rarely match.
ISP → BOS
59.5% full
94 departures · 503 passengers
BOS → ISP
67.6% full
92 departures · 559 passengers
Nonstop BOS–ISP traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Boston (BOS) from Islip (ISP)?
BOS to ISP is 153 miles (246 km / 133 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from BOS to ISP?
A nonstop covers the 153-mile great-circle distance in roughly 1h 06m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies BOS–ISP?
In July 2026, the Cessna C-402 flew the largest share of departures (99.5%), followed by the Pilatus PC-12 (0.5%).
What mileage do I earn flying BOS–ISP?
Distance-based programs credit off the 153-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
Keep exploring
Every route below is its own page.
Popular long-haul routes