BOS - ISP

$128 Find Cheap Flights from Boston to Islip

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Islip departing on 9/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Islip

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Islip, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Islip, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Boston to Islip (BOS-ISP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Islip that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Islip

Mon, Aug 11 - Wed, Aug 20
Southwest Logo
5:35 am - 12:00 pmBOS-ISP
6h 25m1 stop
Southwest Logo
12:30 pm - 5:05 pmISP-BOS
4h 35m1 stop
$255Southwest
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Wed, Sep 10 - Thu, Sep 18
Southwest Logo
5:50 pm - 10:05 pmBOS-ISP
4h 15m1 stop
Southwest Logo
12:10 pm - 6:00 pmISP-BOS
5h 50m1 stop
$268Southwest
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Wed, Sep 10 - Thu, Sep 18
Southwest Logo
5:20 am - 3:10 pmBOS-ISP
9h 50m2 stops
Southwest Logo
12:10 pm - 6:00 pmISP-BOS
5h 50m1 stop
$273Southwest
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Tue, Jun 24 - Wed, Jun 25
Frontier Logo
8:00 am - 3:41 pmBOS-ISP
7h 41m1 stop
Frontier Logo
4:45 pm - 12:43 amISP-BOS
7h 58m1 stop
$307Frontier
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Wed, Jul 9 - Wed, Jul 16
Frontier Logo
8:00 am - 3:42 pmBOS-ISP
7h 42m1 stop
Frontier Logo
4:45 pm - 12:38 amISP-BOS
7h 53m1 stop
$308Frontier
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Tue, Sep 16 - Wed, Sep 17
JetBlue Logo
6:00 am - 2:44 pmBOS-ISP
8h 44m1 stop
JetBlue Logo
3:39 pm - 10:29 pmISP-BOS
6h 50m1 stop
$383JetBlue
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Fri, Sep 5 - Sun, Sep 7
 Logo
9:18 am - 10:37 amBOS-ISP
25h 19m1 stop
 Logo
7:30 am - 8:57 amISP-BOS
1h 27mnonstop
Mon, Jul 14 - Wed, Jul 16
 Logo
11:53 am - 1:24 pmBOS-ISP
1h 31mnonstop
 Logo
12:35 pm - 8:46 pmISP-BOS
8h 11m1 stop
Thu, Jul 3 - Sun, Jul 6
Cape Air Logo
9:27 am - 10:58 amBOS-ISP
1h 31mnonstop
Cape Air Logo
11:53 am - 1:20 pmISP-BOS
1h 27mnonstop
$452Cape Air
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Thu, Jul 3 - Thu, Jul 10
Cape Air Logo
9:27 am - 10:58 amBOS-ISP
1h 31mnonstop
Cape Air Logo
4:33 pm - 6:00 pmISP-BOS
1h 27mnonstop
$470Cape Air
Find Deal
Useful Info

KAYAK's insights & trends for Boston to Islip flights

Get data-powered insights and trends into flights from Boston to Islip to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Boston to Islip?

The average price of all round-trip flights from Boston to Islip clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to Islip, look for departures on Thursdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Islip, Monday is the cheapest day to fly and Sunday is the most expensive.

Can I save money by flying with a layover from Boston to Islip?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $366 on average.

Good to know

Low seasonSeptember
High seasonOctober
Cheapest flight$128
Best time to beat the crowds with an average 34% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Boston to Islip

When to book flights from Boston to Islip

Are your dates flexible? Find out the best times to travel from Boston to Islip based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Islip

  • What is the cheapest flight from Boston to Islip?

    In the last 3 days, the lowest price for a flight from Boston to Islip was $128 for a one-way ticket and $255 for a round-trip.

  • Do I need a passport to fly between Boston and Islip?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airlines offer Wi-Fi service onboard planes from Boston to Islip?

    JetBlue, Delta, and American Airlines offer inflight Wi-Fi service on the Boston to Islip flight route.

  • Which aircraft models fly most regularly from Boston to Islip?

    The Embraer 190 is the aircraft model that flies most regularly on the Boston to Islip flight route.

  • On which days can I fly direct from Boston to Islip?

    There are nonstop flights from Boston to Islip on a daily basis.

  • Which is the best airline for flights from Boston to Islip, Southwest or JetBlue?

    The two airlines most popular with KAYAK users for flights from Boston to Islip are Southwest and JetBlue. With an average price for the route of $341 and an overall rating of 8.0, Southwest is the most popular choice. JetBlue is also a great choice for the route, with an average price of $238 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Boston to Islip?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Islip.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Islip?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Islip?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Islip with an airline and back to Boston with another airline. Booking your flights between Boston and ISP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Islip?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Islip from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Prefer to fly direct from Boston to Islip?

Find which airlines fly direct from Boston Logan Intl Airport to Islip Long Island Airport, which days they fly and book direct flights.

Direct departures

Boston Logan Intl to Islip Long Island

Monday

Cape Air

Cape Air

Tuesday

Cape Air

Cape Air

Wednesday

Cape Air

Cape Air

Thursday

Cape Air

Cape Air

Friday

Cape Air

Cape Air

Saturday

Cape Air

Cape Air

Sunday

Cape Air

Cape Air

See more direct flights

Direct returns

Islip Long Island to Boston Logan Intl

Monday

Cape Air

Cape Air

Tuesday

Cape Air

Cape Air

Wednesday

Cape Air

Cape Air

Thursday

Cape Air

Cape Air

Friday

Cape Air

Cape Air

Saturday

Cape Air

Cape Air

Sunday

Cape Air

Cape Air

See more direct flights
See more direct flights

Top airlines flying from Boston to Islip

 
See real verified KAYAK customer reviews for airlines flying from Boston to Islip. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Islip? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4287 reviews
8.6Crew
7.1Food
8.0Comfort
7.6Entertainment
8.2Boarding
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

Flight was delayed several 3 hours - no reason was given and no communication what so ever.

Excellent from start to finish. All staff members were amazing!

It took 1-1/2 hours to get our luggage after we landed. That to me is unacceptable

The flight was delayed for 4 hours. Once onboard the crew was wonderful.

I rate it is good we had a 4-hour travel delay at one point but JetBlue gave out food vouchers and travel points credits for another flight so they try to make up for it

Did not enjoy this flight at all. All of my coworkers flew delta and I chose JetBlue because I really value how simple the WiFi and entertainment is and this flight I didn’t get either. Crew staff was unsympathetic to my system not working, everyone I asked for help with was extremely bothered by my request for help.

Little snafu at boarding. Staff communicated with gate poorly. Flight attendant was rude making disembark early. This was an older mint class. Needs an overhaul for sure. Food was good. The male flight attendant was really nice.

Like the space, did not like the snack options, there was no power outlet in seats, no entertainment, no flyfi.

I volunteered to let them put my carry on suitcase in the baggage storage area. But when we landed I was told it was being unloaded IN A DIFFERENT TERMINAL! I had to walk (painful for me) a long way to retrieve my bag and my ride had to move from the waiting area they were in to a totally different one. Not happy.

In-flight staff was very helpful and excellent. However, the flight was delayed by 90 minutes. Also the boarding process should be expedited in case of delayed flights. This will help the passengers trying to make international connections.

Everything you need to know for your flight from Boston to Islip

Information on your arrival and departure airports

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