Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Islip, New York to Boston from $78

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 12/11. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
8:29 pm - 10:01 amISP-BOS
13h 32m1 stop
Multiple Airlines Logo
10:56 am - 7:34 pmBOS-ISP
8h 38m1 stop
$136Multiple Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Frontier Logo
10:19 am - 9:57 amISP-BOS
23h 38m1 stop
Frontier Logo
12:57 pm - 9:13 amBOS-ISP
20h 16m1 stop
$149Frontier
Find Deal
Thu, Dec 11 - Sun, Dec 14
Multiple Airlines Logo
8:29 pm - 10:22 amISP-BOS
37h 53m2 stops
Multiple Airlines Logo
10:56 am - 7:34 pmBOS-ISP
8h 38m1 stop
$159Multiple Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Multiple Airlines Logo
10:19 am - 7:06 pmISP-BOS
8h 47m1 stop
Multiple Airlines Logo
8:11 pm - 11:25 amBOS-ISP
15h 14m1 stop
$161Multiple Airlines
Find Deal
Sat, Dec 13 - Wed, Dec 17
Multiple Airlines Logo
10:19 am - 10:01 amISP-BOS
23h 42m1 stop
Multiple Airlines Logo
8:11 pm - 7:34 pmBOS-ISP
23h 23m1 stop
$165Multiple Airlines
Find Deal
Mon, Dec 8 - Mon, Dec 15
Multiple Airlines Logo
10:19 am - 11:56 pmISP-BOS
13h 37m2 stops
Multiple Airlines Logo
8:11 pm - 11:25 amBOS-ISP
15h 14m1 stop
$174Multiple Airlines
Find Deal
Sat, Dec 13 - Wed, Dec 17
Multiple Airlines Logo
11:15 am - 10:03 amISP-BOS
22h 48m1 stop
Multiple Airlines Logo
8:11 pm - 11:25 amBOS-ISP
15h 14m1 stop
$182Multiple Airlines
Find Deal
Sun, Dec 14 - Wed, Dec 17
Multiple Airlines Logo
10:19 am - 11:56 pmISP-BOS
13h 37m2 stops
Multiple Airlines Logo
12:57 pm - 9:13 amBOS-ISP
20h 16m1 stop
$186Multiple Airlines
Find Deal
Thu, Dec 11 - Sun, Dec 14
Multiple Airlines Logo
8:29 pm - 4:50 pmISP-BOS
20h 21m1 stop
Multiple Airlines Logo
12:17 pm - 9:13 amBOS-ISP
20h 56m1 stop
$194Multiple Airlines
Find Deal
Tue, Dec 2 - Fri, Dec 5
Multiple Airlines Logo
11:40 am - 10:03 amISP-BOS
22h 23m2 stops
Multiple Airlines Logo
8:11 pm - 11:25 amBOS-ISP
15h 14m1 stop
$221Multiple Airlines
Find Deal
Sun, Dec 14 - Wed, Dec 17

Frontier flights from Islip, New York to Boston

Our best Frontier deals on Islip, New York to Boston flight tickets
Frontier
Dec 11
ISP10:19 amIslip Long Island
23h 38m
1 stop
BOS9:57 amBoston Logan Intl
Dec 14
BOS12:57 pmBoston Logan Intl
20h 16m
1 stop
ISP9:13 amIslip Long Island
$149
Find similar
Frontier
Nov 26
ISP11:03 amIslip Long Island
22h 09m
2 stops
BOS9:12 amBoston Logan Intl
Nov 30
BOS10:46 amBoston Logan Intl
21h 16m
1 stop
ISP8:02 amIslip Long Island
$251
Find similar
Frontier
Nov 14
ISP4:58 pmIslip Long Island
15h 30m
1 stop
BOS8:28 amBoston Logan Intl
Nov 16
BOS8:40 amBoston Logan Intl
12h 02m
2 stops
ISP8:42 pmIslip Long Island
$472
Find similar

Southwest flights from Islip, New York to Boston

Our best Southwest deals on Islip, New York to Boston flight tickets
Southwest
Mar 4
ISP3:45 pmIslip Long Island
6h 20m
1 stop
BOS10:05 pmBoston Logan Intl
Mar 8
BOS5:15 amBoston Logan Intl
6h 30m
1 stop
ISP11:45 amIslip Long Island
$327
Find similar
Southwest
Mar 4
ISP6:00 amIslip Long Island
11h 10m
2 stops
BOS5:10 pmBoston Logan Intl
Mar 8
BOS5:15 amBoston Logan Intl
6h 30m
1 stop
ISP11:45 amIslip Long Island
$332
Find similar
Southwest
Dec 4
ISP12:55 pmIslip Long Island
6h 25m
1 stop
BOS7:20 pmBoston Logan Intl
Dec 5
BOS9:05 amBoston Logan Intl
6h 15m
1 stop
ISP3:20 pmIslip Long Island
$367
Find similar

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 November 13, 2025.
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

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 12/9

8:29 pm-10:01 am

1 stop13h 32m

Boston Logan Intl

Tue 12/16

10:56 am-7:34 pm

1 stop8h 38m

$136

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 12/11

10:19 am-9:57 am

1 stop23h 38m

Boston Logan Intl

Sun 12/14

12:57 pm-9:13 am

1 stop20h 16m

$149

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 12/9

8:29 pm-10:22 am

2 stops37h 53m

Boston Logan Intl

Tue 12/16

10:56 am-7:34 pm

1 stop8h 38m

$159

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 12/13

10:19 am-7:06 pm

1 stop8h 47m

Boston Logan Intl

Wed 12/17

8:11 pm-11:25 am

1 stop15h 14m

$161

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Mon 12/8

10:19 am-10:01 am

1 stop23h 42m

Boston Logan Intl

Mon 12/15

8:11 pm-7:34 pm

1 stop23h 23m

$165

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sat 12/13

10:19 am-11:56 pm

2 stops13h 37m

Boston Logan Intl

Wed 12/17

8:11 pm-11:25 am

1 stop15h 14m

$174

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sun 12/14

11:15 am-10:03 am

1 stop22h 48m

Boston Logan Intl

Wed 12/17

8:11 pm-11:25 am

1 stop15h 14m

$182

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Thu 12/11

10:19 am-11:56 pm

2 stops13h 37m

Boston Logan Intl

Sun 12/14

12:57 pm-9:13 am

1 stop20h 16m

$186

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Tue 12/2

8:29 pm-4:50 pm

1 stop20h 21m

Boston Logan Intl

Fri 12/5

12:17 pm-9:13 am

1 stop20h 56m

$194

IslipBoston

ISP - BOS

ISPBOS

Islip Long Island

Sun 12/14

11:40 am-10:03 am

2 stops22h 23m

Boston Logan Intl

Wed 12/17

8:11 pm-11:25 am

1 stop15h 14m

$221

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, May 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 $157. If you aren’t able to travel during the month of May, then book flights to Boston from Islip, New York 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, New York to Boston is on a Friday when prices can be found for as low as $357. 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 $583.

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 $420. 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 $579 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, New York to Boston flights?

You could potentially save up to 24% 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

Best Price Found

$300

Fastest flight time

1h 25m

Direct flights

Mon, Tue, Wed, Thu, Fri and Sat

Airports in Boston

1 airport
The best one-way flight to Boston from Islip, New York in the past 72 hours is $300. The best round-trip flight deal from Islip, New York to Boston found on momondo in the last 72 hours is $620.
The fastest flight from Islip, New York to Boston takes 1h 25m
Direct flights go from Islip, New York to Boston on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. The only airline offering direct flights is Cape Air.
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 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 $97Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
SouthwestPriceFrom $254Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
Cape AirPriceFrom $497Free CancellationRating
9.3
39 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 13 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
Plymouth
Kennebunkport
Cambridge
South Yarmouth
Narragansett
Nashua
Gloucester
Falmouth
Laconia
Brockton
Concord
Everett
Sturbridge
Chatham

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 12/13
Sat 12/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States