Boston (BOS) to Islip (ISP) flights
One airline flies nonstop from Boston (BOS) to Islip (ISP): Cape Air. The two airports are 153 miles (246 km) apart. There are also 4 ways to fly it with one stop, through Baltimore, Norfolk and Richmond and more.
Airlines flying nonstop from BOS to ISP
- Cape AirNot in an alliance · bookable with 3 programsWho books it
Book BOS to ISP with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Cape Air
- Delta SkyMilesBooks Cape Air
- JetBlue TrueBlueBooks Cape Air
BOS to ISP with one stop
4 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Baltimore (BWI)Southwest Airlines the whole way
- Via Norfolk (ORF)Delta Air Lines and JetBlue Airways, then Breeze Airways
- Via Richmond (RIC)JetBlue Airways and Delta Air Lines, then Breeze Airways
- Via Raleigh/Durham (RDU)JetBlue Airways, Delta Air Lines and 1 more, then Breeze Airways
BOS to ISP: common questions
Which airlines fly nonstop from BOS to ISP?
Cape Air flies nonstop from Boston (BOS) to Islip (ISP).
How far is Boston from Islip by plane?
Boston (BOS) and Islip (ISP) are 153 miles (246 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book BOS to ISP award flights?
3 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, Delta SkyMiles and JetBlue TrueBlue. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does BOS to ISP cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for BOS to ISP with taxes and fees.
Where can I connect between Boston and Islip?
The most direct connections are through Baltimore (BWI), Norfolk (ORF), Richmond (RIC) and Raleigh/Durham (RDU). On 1 of them the same airline flies both flights, for example Southwest Airlines through Baltimore.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.