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Cheap flights from Islip to Boston from $96

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Islip to Boston departing on 9/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Islip to Boston (ISP-BOS)

Cheap round-trip flights

Logo
5:05 pm - 1:48 pmISP-BOS
20h 43m1 stop
Logo
12:20 pm - 10:40 amBOS-ISP
22h 20m1 stop
$223
Find Deal
Mon, Sep 8 - Wed, Sep 10
Logo
11:35 am - 1:48 pmISP-BOS
26h 13m1 stop
Logo
2:53 pm - 10:40 amBOS-ISP
19h 47m1 stop
$227
Find Deal
Wed, Sep 10 - Sun, Sep 14
Logo
11:25 am - 1:48 pmISP-BOS
26h 23m1 stop
Logo
12:20 pm - 10:40 amBOS-ISP
22h 20m1 stop
$246
Find Deal
Sun, Sep 28 - Tue, Sep 30
Southwest Logo
11:40 am - 4:30 pmISP-BOS
4h 50m1 stop
Southwest Logo
7:50 am - 12:25 pmBOS-ISP
4h 35m1 stop
$307Southwest
Find Deal
Tue, Oct 7 - Wed, Oct 8
Southwest Logo
5:40 am - 11:00 amISP-BOS
5h 20m1 stop
Southwest Logo
5:35 pm - 10:05 pmBOS-ISP
4h 30m1 stop
$317Southwest
Find Deal
Tue, Nov 25 - Tue, Dec 2
JetBlue Logo
1:57 pm - 11:11 pmISP-BOS
9h 14m1 stop
JetBlue Logo
8:00 am - 3:30 pmBOS-ISP
7h 30m1 stop
$358JetBlue
Find Deal
Thu, Oct 30 - Wed, Nov 5
Frontier Logo
9:37 pm - 8:33 amISP-BOS
10h 56m1 stop
Frontier Logo
9:18 am - 8:52 pmBOS-ISP
11h 34m1 stop
$363Frontier
Find Deal
Thu, Oct 16 - Sun, Oct 19
JetBlue Logo
11:35 am - 10:08 pmISP-BOS
10h 33m1 stop
JetBlue Logo
6:00 am - 3:23 pmBOS-ISP
9h 23m1 stop
$377JetBlue
Find Deal
Fri, Sep 12 - Sat, Sep 13
Cape Air Logo
4:33 pm - 6:00 pmISP-BOS
1h 27mnonstop
Cape Air Logo
1:50 pm - 3:21 pmBOS-ISP
1h 31mnonstop
$390Cape Air
Find Deal
Thu, Oct 9 - Sun, Oct 12
Cape Air Logo
7:30 am - 8:57 amISP-BOS
1h 27mnonstop
Cape Air Logo
11:53 am - 1:24 pmBOS-ISP
1h 31mnonstop
$396Cape Air
Find Deal
Fri, Oct 17 - Sun, Oct 19

Southwest flights from Islip to Boston

Our best Southwest deals on Islip to Boston flight tickets
Southwest
Oct 7
ISP11:40 amIslip Long Island
4h 50m
1 stop
BOS4:30 pmBoston Logan Intl
Oct 8
BOS7:50 amBoston Logan Intl
4h 35m
1 stop
ISP12:25 pmIslip Long Island
$307
Find similar
Southwest
Nov 25
ISP5:40 amIslip Long Island
5h 20m
1 stop
BOS11:00 amBoston Logan Intl
Dec 2
BOS5:35 pmBoston Logan Intl
4h 30m
1 stop
ISP10:05 pmIslip Long Island
$317
Find similar
Southwest
Oct 7
ISP4:55 pmIslip Long Island
5h 45m
1 stop
BOS10:40 pmBoston Logan Intl
Oct 8
BOS5:00 amBoston Logan Intl
7h 25m
2 stops
ISP12:25 pmIslip Long Island
$322
Find similar

JetBlue flights from Islip to Boston

Our best JetBlue deals on Islip to Boston flight tickets
JetBlue
Oct 30
ISP1:57 pmIslip Long Island
9h 14m
1 stop
BOS11:11 pmBoston Logan Intl
Nov 5
BOS8:00 amBoston Logan Intl
7h 30m
1 stop
ISP3:30 pmIslip Long Island
$358
Find similar
JetBlue
Sep 12
ISP11:35 amIslip Long Island
10h 33m
1 stop
BOS10:08 pmBoston Logan Intl
Sep 13
BOS6:00 amBoston Logan Intl
9h 23m
1 stop
ISP3:23 pmIslip Long Island
$377
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Islip to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 28, 2025.
Use the filters below to find and compare flights from Islip to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 9/8

5:05 pm-1:48 pm

1 stop20h 43m

Boston Logan Intl

Wed 9/10

12:20 pm-10:40 am

1 stop22h 20m

$223

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 9/10

11:35 am-1:48 pm

1 stop26h 13m

Boston Logan Intl

Sun 9/14

2:53 pm-10:40 am

1 stop19h 47m

$227

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sun 9/28

11:25 am-1:48 pm

1 stop26h 23m

Boston Logan Intl

Tue 9/30

12:20 pm-10:40 am

1 stop22h 20m

$246

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 10/7

11:40 am-4:30 pm

1 stop4h 50m

Boston Logan Intl

Wed 10/8

7:50 am-12:25 pm

1 stop4h 35m

$307

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 11/25

5:40 am-11:00 am

1 stop5h 20m

Boston Logan Intl

Tue 12/2

5:35 pm-10:05 pm

1 stop4h 30m

$317

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 10/30

1:57 pm-11:11 pm

1 stop9h 14m

Boston Logan Intl

Wed 11/5

8:00 am-3:30 pm

1 stop7h 30m

$358

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 10/16

9:37 pm-8:33 am

1 stop10h 56m

Boston Logan Intl

Sun 10/19

9:18 am-8:52 pm

1 stop11h 34m

$363

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 9/12

11:35 am-10:08 pm

1 stop10h 33m

Boston Logan Intl

Sat 9/13

6:00 am-3:23 pm

1 stop9h 23m

$377

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 10/9

4:33 pm-6:00 pm

Nonstop1h 27m

Boston Logan Intl

Sun 10/12

1:50 pm-3:21 pm

Nonstop1h 31m

$390

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 10/17

7:30 am-8:57 am

Nonstop1h 27m

Boston Logan Intl

Sun 10/19

11:53 am-1:24 pm

Nonstop1h 31m

$396

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from Islip to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Boston?

In general, May is the cheapest month to fly from Islip to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $157. If you aren’t able to travel during the month of May, then book flights to Boston from Islip during June instead. Flights to Boston in June, while not as cheap as those in May, still average around $238.

What is the cheapest day to depart on your flight to Boston?

The cheapest day to depart from Islip to Boston is on a Friday when prices can be found for as low as $299. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $551.

What is the cheapest time of day to depart on your flight to Boston?

According to our data, the cheapest time of day to fly to Boston is in the evening. momondo users have found flights departing from Islip to Boston in the evening for as low as $305. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the afternoon is when there is more demand to fly to Boston, so prices are often more expensive at around $549 per ticket.

What is the cheapest Islip Long Island to Boston Logan Intl flight route?

Fly from Islip Long Island to Boston Logan Intl for the best Islip Long Island - Boston Logan Intl flight prices

What cabin class options are available on Islip Long Island to Boston Logan Intl flights?

There is only 1 cabin class available to choose from on Islip Long Island to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Islip to Boston flights?

You could potentially save up to 7% on your flight if you consider stops on a Islip to Boston flight.

When to book flights from Islip to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Islip to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Islip to Boston (ISP to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Islip to Boston

Best Price Found

$304

Fastest flight time

1h 27m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Islip in the past 72 hours is $304. The best round-trip flight deal from Islip to Boston found on momondo in the last 72 hours is $520.
The fastest flight from Islip to Boston takes 1h 27m
Direct flights go from Islip to Boston every day.
There is 1 airport near Boston: Boston Logan Intl (BOS)
Search flight deals

  • How far is Islip Long Island to Boston Logan Intl by plane?

    The distance between Islip Long Island and Boston Logan Intl is about 158.2 mi. In terms of flight time, this usually takes a little over 1h 27m.

  • When did momondo last update prices for flights from Islip Long Island Airport to Boston Logan Intl Airport?

    Prices for flights from Islip Long Island Airport to Boston Logan Intl Airport are updated daily.

  • How many operators does momondo search for flights from Islip Long Island Airport to Boston Logan Intl Airport?

  • How old do you have to be to fly from Islip Long Island Airport to Boston Logan Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Islip Long Island Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Islip to Boston?

  • What is the most popular airline from Islip to Boston?

Best airlines flying from Islip to Boston

Compare and see reviews for airlines that fly from Islip to Boston with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $97Free CancellationRating
7.2
2,920 reviews
Search JetBlue flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
Cape AirPriceFrom $501Free CancellationRating
9.3
38 reviews
Search Cape Air flights

  • Cape Air Flights From Islip to Boston

    Cape Air is one of the most popular airlines flying from Islip to Boston, operating 28 flights/week on average for this route. A good Cape Air flight deal for Islip to Boston starts from $501 round-trip, up to an average price of $520. Our users have rated Cape Air at 9.3/10.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Hampton Beach
Salem
Ogunquit
Old Orchard Beach
Hampton
York Beach
Plymouth
Kennebunkport
Cambridge
Narragansett
Nashua
South Yarmouth
Gloucester
Brockton
Laconia
Concord
Falmouth
Everett
Wells
Sturbridge

Why use momondo?

Why should I use momondo to find a flight deal from Islip to Boston?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Islip to Boston. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Islip to Boston with flexible booking policies on momondo?

Yes. All flights to Boston from Islip on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Islip to Boston?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Boston from Islip.

I’m not ready to book a flight from Islip to Boston right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Islip to Boston now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Boston and let you know when they change.

An easier way to manage your Boston trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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