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Cheap flights from Islip, New York to Boston from $158

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, New York to Boston departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Islip, New York to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
5:43 pm - 10:51 am
ISP
-
BOS
17h 08m
1 stop
Frontier Logo
11:36 am - 4:58 pm
BOS
-
ISP
29h 22m
1 stop
$284Frontier
Fri, Sep 11 - Fri, Sep 18
Multiple Airlines Logo
11:57 am - 11:50 am
ISP
-
BOS
23h 53m
1 stop
Multiple Airlines Logo
10:04 am - 6:14 pm
BOS
-
ISP
8h 10m
1 stop
$300Multiple Airlines
Sat, Aug 29 - Sat, Sep 5
Frontier Logo
5:43 pm - 10:22 am
ISP
-
BOS
16h 39m
1 stop
Frontier Logo
11:36 am - 4:58 pm
BOS
-
ISP
29h 22m
1 stop
$308Frontier
Wed, Sep 16 - Sat, Sep 19
Multiple Airlines Logo
5:27 pm - 11:47 am
ISP
-
BOS
18h 20m
2 stops
Multiple Airlines Logo
10:04 am - 6:14 pm
BOS
-
ISP
8h 10m
1 stop
$312Multiple Airlines
Tue, Sep 1 - Sat, Sep 5
JetBlue Logo
4:58 pm - 12:32 am
ISP
-
BOS
7h 34m
1 stop
JetBlue Logo
3:00 pm - 11:34 pm
BOS
-
ISP
8h 34m
1 stop
$315JetBlue
Tue, Sep 1 - Sat, Sep 5
JetBlue Logo
1:25 pm - 9:59 pm
ISP
-
BOS
8h 34m
1 stop
JetBlue Logo
12:59 pm - 9:44 pm
BOS
-
ISP
8h 45m
1 stop
$315JetBlue
Tue, Sep 1 - Sat, Sep 5
JetBlue Logo
4:26 pm - 11:18 pm
ISP
-
BOS
6h 52m
1 stop
JetBlue Logo
2:40 pm - 11:22 pm
BOS
-
ISP
8h 42m
1 stop
$315JetBlue
Mon, Sep 28 - Wed, Sep 30
JetBlue Logo
6:00 am - 2:35 pm
ISP
-
BOS
8h 35m
1 stop
JetBlue Logo
6:15 am - 1:05 pm
BOS
-
ISP
6h 50m
1 stop
$315JetBlue
Mon, Oct 19 - Tue, Oct 20
Cape Air Logo
7:05 am - 8:30 am
ISP
-
BOS
1h 25mnonstop
Cape Air Logo
5:00 pm - 6:35 pm
BOS
-
ISP
1h 35mnonstop
$499Cape Air
Fri, Aug 28 - Fri, Sep 4
Cape Air Logo
7:05 am - 8:30 am
ISP
-
BOS
1h 25mnonstop
Cape Air Logo
8:55 am - 10:30 am
BOS
-
ISP
1h 35mnonstop
$499Cape Air
Sun, Oct 4 - Sun, Oct 11

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Cape Air flights from Islip, New York to Boston

Our best Cape Air deals on Islip, New York to Boston flight tickets
Cape Air
Aug 28
ISP7:05 amIslip Long Island
1h 25m
BOS8:30 amBoston Logan Intl
Sep 4
BOS5:00 pmBoston Logan Intl
1h 35m
ISP6:35 pmIslip Long Island
$499
Cape Air
Aug 30
ISP5:34 pmIslip Long Island
1h 25m
BOS6:59 pmBoston Logan Intl
Sep 6
BOS8:55 amBoston Logan Intl
1h 35m
ISP10:30 amIslip Long Island
$500
Cape Air
Sep 7
ISP7:31 amIslip Long Island
1h 25m
BOS8:56 amBoston Logan Intl
Sep 11
BOS7:24 pmBoston Logan Intl
1h 35m
ISP8:59 pmIslip Long Island
$502

Frontier flights from Islip, New York to Boston

Our best Frontier deals on Islip, New York to Boston flight tickets
Frontier
Sep 11
ISP5:43 pmIslip Long Island
17h 08m
1 stop
BOS10:51 amBoston Logan Intl
Sep 18
BOS11:36 amBoston Logan Intl
29h 22m
1 stop
ISP4:58 pmIslip Long Island
$284
Frontier
Sep 16
ISP5:43 pmIslip Long Island
16h 39m
1 stop
BOS10:22 amBoston Logan Intl
Sep 19
BOS11:36 amBoston Logan Intl
29h 22m
1 stop
ISP4:58 pmIslip Long Island
$308
Frontier
Aug 30
ISP7:09 pmIslip Long Island
16h 41m
2 stops
BOS11:50 amBoston Logan Intl
Sep 6
BOS10:04 amBoston Logan Intl
8h 10m
1 stop
ISP6:14 pmIslip Long Island
$389

momondo Fare Finder

 
Customize your flight search to find flights from Islip, New York 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 3, 2026.
Use the filters below to find and compare flights from Islip, New York to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 9/11

5:43 pm-10:51 am

1 stop17h 08m

Boston Logan Intl

Fri 9/18

11:36 am-4:58 pm

1 stop29h 22m

$284

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 8/29

11:57 am-11:50 am

1 stop23h 53m

Boston Logan Intl

Sat 9/5

10:04 am-6:14 pm

1 stop8h 10m

$300

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 9/16

5:43 pm-10:22 am

1 stop16h 39m

Boston Logan Intl

Sat 9/19

11:36 am-4:58 pm

1 stop29h 22m

$308

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 9/1

5:27 pm-11:47 am

2 stops18h 20m

Boston Logan Intl

Sat 9/5

10:04 am-6:14 pm

1 stop8h 10m

$312

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 9/1

4:58 pm-12:32 am

1 stop7h 34m

Boston Logan Intl

Sat 9/5

3:00 pm-11:34 pm

1 stop8h 34m

$315

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 9/1

1:25 pm-9:59 pm

1 stop8h 34m

Boston Logan Intl

Sat 9/5

12:59 pm-9:44 pm

1 stop8h 45m

$315

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 9/28

4:26 pm-11:18 pm

1 stop6h 52m

Boston Logan Intl

Wed 9/30

2:40 pm-11:22 pm

1 stop8h 42m

$315

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 10/19

6:00 am-2:35 pm

1 stop8h 35m

Boston Logan Intl

Tue 10/20

6:15 am-1:05 pm

1 stop6h 50m

$315
Quickest round-trip

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 8/28

7:05 am-8:30 am

Nonstop1h 25m

Boston Logan Intl

Fri 9/4

5:00 pm-6:35 pm

Nonstop1h 35m

$499

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sun 10/4

7:05 am-8:30 am

Nonstop1h 25m

Boston Logan Intl

Sun 10/11

8:55 am-10:30 am

Nonstop1h 35m

$499

Flights are sorted by cheapest round-trip flights first.

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

How to get the cheapest flight ticket from Islip, New York 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 typical price of a round-trip flight between Islip, New York and Boston?

Prices are currently low for flights on this route.

Typical prices usually range from $520 to $580.
The lowest price recently found on this route was $284.

What is the cheapest month to fly to Boston?

In general, February is the cheapest month to fly from Islip, New York to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you aren’t able to travel during the month of February, then book flights to Boston from Islip, New York during September instead. Flights to Boston in September, while not as cheap as those in February, still average around $503.

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

The cheapest day to depart from Islip, New York to Boston is on a Friday when prices can be found for as low as $345. 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 $504.

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 morning. momondo users have found flights departing from Islip, New York to Boston in the morning for as low as $393. 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, New York to Boston flights?

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

When to book flights from Islip, New York to Boston

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

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

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

Best Price Found

$320

Fastest flight time

1h 25m

Direct flights

Every day

Airports in Boston

1 airport
The best one-way flight to Boston from Islip, New York in the past 72 hours is $320. The best round-trip flight deal from Islip, New York to Boston found on momondo in the last 72 hours is $517.
The fastest flight from Islip, New York to Boston takes 1h 25m
Direct flights go from Islip, New York to Boston every day.
There is 1 airport in Boston. From Islip, New York there are direct flights to Boston Logan Intl (BOS).
Search flight deals

Frequently asked questions about flying from Islip, New York to Boston

  • 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 25m.

  • 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, New York to Boston?

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

Best airlines flying from Islip, New York to Boston

Compare and see reviews for airlines that fly from Islip, New York to Boston with momondo
Airline
Rating
Free Cancellation
Price
Cape AirPriceFrom $497Free CancellationRating
9.3
33 reviews
Search Cape Air flights

  • Cape Air Flights From Islip, New York to Boston

    Cape Air is one of the most popular airlines flying from Islip, New York to Boston, operating 11 flights/week on average for this route. A good Cape Air flight deal for Islip, New York to Boston starts from $497 round-trip, up to an average price of $530. 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
Ogunquit
Salem
Old Orchard Beach
Hampton
Laconia
Cambridge
South Yarmouth
Plymouth
Revere
Kennebunkport
York Beach
Gloucester
Warwick
Middletown
South Portland
Everett
Brockton
Falmouth
Seekonk

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.

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