$123 Find Cheap Flights from Boston to Islip - Compare and Save

Only Cape Air operates flights between Boston and Islip.

Flights from Boston to Islip usually depart from Boston Logan Intl (BOS) and arrive at Islip Long Island (ISP).

Here are some options for this route, based on selected ticket types and cabin classes:

• Cape Air: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Only Economy Class is available on flights from Boston to Islip.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $396 round-trip via Baltimore/Washington (BWI), compared to $650 for nonstop.

The Tecnam P2012 Traveler family is used most often on this route, operated mainly by Cape Air. Other aircraft seen on the route include Embraer 175 variants.

Most connecting flights from Boston to Islip pass through Baltimore/Washington (BWI), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

Yes. Being flexible with your travel dates can save you up to 40% on the Boston to Islip route. Tuesday is the cheapest departure day at $404 round-trip on average, while Saturday is the most expensive at $671, a difference of $267. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Morning is the busiest departure period on Boston to Islip flights, with 50% of flights leaving in that window. Evening departures account for 50%, afternoon flights for 0%, and night flights for 0%.

These are the earliest and latest flight times available from Boston to Islip:

• Earliest: departs at 8:55 am and lands at 10:29 am
• Latest: departs at 7:24 pm and lands at 8:58 pm.

The flight takes about 1h 34m.

A nonstop flight from Boston to Islip takes 1h 34m, covering 153 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $246 to $1,519. That means the highest observed fare was about 6x higher than the lowest one.

One-way fares from Boston to Islip are currently lower than usual. Average one-way flight prices are about $179, which is 42% below the typical average for this route.

Islip Long Island Airport (ISP) hosts 5 major car rental companies, with daily rates starting from around $36 for economy cars. Top options include:
• Budget
• Enterprise Rent-A-Car
• Avis
• National
• Empire Rent A Car

Round-trip flights from Boston to Islip range from $520 to $671, with an average of $640 over the past 12 months. Anything below $520 counts as a good deal.