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Cheap flights from Islip, New York to Boston from $146

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 6/23. 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, New York to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:49 pm - 7:52 am
ISP
-
BOS
36h 03m
2 stops
Multiple Airlines Logo
7:00 am - 8:57 pm
BOS
-
ISP
13h 57m
1 stop
$334Multiple Airlines
Sun, Jun 7 - Mon, Jun 15
Frontier Logo
11:00 am - 1:24 am
ISP
-
BOS
14h 24m
2 stops
Frontier Logo
10:07 am - 10:05 am
BOS
-
ISP
23h 58m
1 stop
$340Frontier
Wed, May 13 - Thu, May 14
Southwest Logo
4:40 pm - 9:05 pm
ISP
-
BOS
4h 25m
1 stop
Southwest Logo
12:35 pm - 4:55 pm
BOS
-
ISP
4h 20m
1 stop
$347Southwest
Sat, May 30 - Sat, Jun 6
Southwest Logo
3:05 pm - 9:40 pm
ISP
-
BOS
6h 35m
1 stop
Southwest Logo
9:40 pm - 8:20 am
BOS
-
ISP
10h 40m
1 stop
$352Southwest
Fri, Jun 19 - Sun, Jun 21
Multiple Airlines Logo
5:27 pm - 11:06 am
ISP
-
BOS
17h 39m
1 stop
Multiple Airlines Logo
9:29 am - 10:05 am
BOS
-
ISP
24h 36m
2 stops
$355Multiple Airlines
Tue, May 12 - Fri, May 15
Multiple Airlines Logo
11:00 am - 7:15 pm
ISP
-
BOS
8h 15m
1 stop
Multiple Airlines Logo
7:00 am - 10:05 am
BOS
-
ISP
27h 05m
1 stop
$362Multiple Airlines
Wed, May 13 - Thu, May 14
Multiple Airlines Logo
7:25 am - 8:59 am
ISP
-
BOS
1h 34mnonstop
Multiple Airlines Logo
10:07 am - 10:05 am
BOS
-
ISP
23h 58m
1 stop
$371Multiple Airlines
Sun, May 17 - Tue, May 19
Southwest Logo
3:05 pm - 12:10 am
ISP
-
BOS
9h 05m
2 stops
Southwest Logo
5:30 am - 11:45 am
BOS
-
ISP
6h 15m
1 stop
$372Southwest
Fri, Jul 24 - Sun, Jul 26
Southwest Logo
12:30 pm - 10:50 pm
ISP
-
BOS
10h 20m
2 stops
Southwest Logo
1:20 pm - 11:40 pm
BOS
-
ISP
10h 20m
2 stops
$377Southwest
Thu, Jul 2 - Thu, Jul 9
Southwest Logo
9:20 am - 9:25 pm
ISP
-
BOS
12h 05m
2 stops
Southwest Logo
2:10 pm - 11:10 pm
BOS
-
ISP
9h 00m
2 stops
$383Southwest
Sat, May 30 - Sat, Jun 6

Frontier flights from Islip, New York to Boston

Our best Frontier deals on Islip, New York to Boston flight tickets
Frontier
May 13
ISP11:00 amIslip Long Island
14h 24m
2 stops
BOS1:24 amBoston Logan Intl
May 14
BOS10:07 amBoston Logan Intl
23h 58m
1 stop
ISP10:05 amIslip Long Island
$340
Frontier
May 14
ISP11:12 amIslip Long Island
22h 00m
1 stop
BOS9:12 amBoston Logan Intl
May 17
BOS10:07 amBoston Logan Intl
23h 58m
1 stop
ISP10:05 amIslip Long Island
$405
Frontier
May 14
ISP11:12 amIslip Long Island
14h 12m
2 stops
BOS1:24 amBoston Logan Intl
May 17
BOS10:07 amBoston Logan Intl
23h 58m
1 stop
ISP10:05 amIslip Long Island
$411

Southwest flights from Islip, New York to Boston

Our best Southwest deals on Islip, New York to Boston flight tickets
Southwest
May 30
ISP4:40 pmIslip Long Island
4h 25m
1 stop
BOS9:05 pmBoston Logan Intl
Jun 6
BOS12:35 pmBoston Logan Intl
4h 20m
1 stop
ISP4:55 pmIslip Long Island
$347
Southwest
Jun 19
ISP3:05 pmIslip Long Island
6h 35m
1 stop
BOS9:40 pmBoston Logan Intl
Jun 21
BOS9:40 pmBoston Logan Intl
10h 40m
1 stop
ISP8:20 amIslip Long Island
$352
Southwest
Aug 29
ISP5:30 amIslip Long Island
9h 15m
2 stops
BOS2:45 pmBoston Logan Intl
Sep 6
BOS6:40 amBoston Logan Intl
9h 05m
2 stops
ISP3:45 pmIslip Long Island
$357

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 May 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

Sun 6/7

7:49 pm-7:52 am

2 stops36h 03m

Boston Logan Intl

Mon 6/15

7:00 am-8:57 pm

1 stop13h 57m

$334

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 5/13

11:00 am-1:24 am

2 stops14h 24m

Boston Logan Intl

Thu 5/14

10:07 am-10:05 am

1 stop23h 58m

$340
Quickest round-trip

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 5/30

4:40 pm-9:05 pm

1 stop4h 25m

Boston Logan Intl

Sat 6/6

12:35 pm-4:55 pm

1 stop4h 20m

$347

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 6/19

3:05 pm-9:40 pm

1 stop6h 35m

Boston Logan Intl

Sun 6/21

9:40 pm-8:20 am

1 stop10h 40m

$352

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 5/12

5:27 pm-11:06 am

1 stop17h 39m

Boston Logan Intl

Fri 5/15

9:29 am-10:05 am

2 stops24h 36m

$355

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Wed 5/13

11:00 am-7:15 pm

1 stop8h 15m

Boston Logan Intl

Thu 5/14

7:00 am-10:05 am

1 stop27h 05m

$362

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sun 5/17

7:25 am-8:59 am

Nonstop1h 34m

Boston Logan Intl

Tue 5/19

10:07 am-10:05 am

1 stop23h 58m

$371

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Fri 7/24

3:05 pm-12:10 am

2 stops9h 05m

Boston Logan Intl

Sun 7/26

5:30 am-11:45 am

1 stop6h 15m

$372

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 7/2

12:30 pm-10:50 pm

2 stops10h 20m

Boston Logan Intl

Thu 7/9

1:20 pm-11:40 pm

2 stops10h 20m

$377

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 5/30

9:20 am-9:25 pm

2 stops12h 05m

Boston Logan Intl

Sat 6/6

2:10 pm-11:10 pm

2 stops9h 00m

$383

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, 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?

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 May instead. Flights to Boston in May, while not as cheap as those in February, still average around $177.

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 $363. 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 $520.

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 $401. 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 $537 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

Can stopping save me money on Islip, New York to Boston flights?

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

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

Fastest flight time

1h 25m

Direct flights

Every day

Airports in Boston

1 airport
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
JetBluePriceFrom $157Free CancellationRating
7.1
2,970 reviews
Search JetBlue flights
SouthwestPriceFrom $174Free CancellationRating
7.9
4,308 reviews
Search Southwest flights
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 21 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 $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
Kennebunkport
Plymouth
Cambridge
South Yarmouth
Gloucester
Narragansett
Brockton
Falmouth
Chatham
Warwick
Sturbridge
Laconia
Dennis Port
Nashua

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

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