What airlines fly to Islip, New York?

Delta, JetBlue and United Airlines are the top three most popular airlines that fly to Islip, New York from Buffalo according to our data. Delta is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 5 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Buffalo Airport to Islip Long Island Airport?

Prices for flights from Buffalo Airport to Islip Long Island Airport were last updated today.

How many operators does momondo search for flights from Buffalo Airport to Islip Long Island Airport?

As of December 2025, there is 1 operator available to choose from for flights from Buffalo Airport to Islip Long Island Airport.

How old do you have to be to fly from Buffalo Airport to Islip Long Island Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$160 Cheap Flights from Buffalo to Islip in 2025/26

1 adult

0 bags

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Find the cheapest flights from Buffalo to New York

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One-way

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Cheap round-trip flights

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10:11 am - 7:50 pm

BUF

ISP

9h 39m1 stop

9:52 am - 8:03 pm

ISP

BUF

10h 11m1 stop

$277Frontier

Thu, Jan 15 - Sun, Jan 18

10:11 am - 7:50 pm

BUF

ISP

9h 39m1 stop

8:45 pm - 9:21 am

ISP

BUF

12h 36m1 stop

$327Frontier

Thu, Jan 15 - Sun, Jan 18

6:55 am - 2:00 pm

BUF

ISP

7h 05m1 stop

6:00 am - 12:30 pm

ISP

BUF

6h 30m1 stop

$397Southwest

Fri, Jan 2 - Fri, Jan 9

6:55 am - 2:00 pm

BUF

ISP

7h 05m1 stop

6:00 am - 3:10 pm

ISP

BUF

9h 10m2 stops

$402Southwest

Fri, Jan 2 - Fri, Jan 9

12:25 pm - 11:55 pm

BUF

ISP

11h 30m2 stops

6:00 am - 4:20 pm

ISP

BUF

10h 20m2 stops

$429Southwest

Fri, Jan 2 - Fri, Jan 9

6:55 am - 2:00 pm

BUF

ISP

7h 05m1 stop

5:50 pm - 12:05 am

ISP

BUF

6h 15m1 stop

$489Southwest

Tue, Dec 23 - Fri, Dec 26

6:55 am - 5:15 pm

BUF

ISP

10h 20m2 stops

5:50 pm - 12:05 am

ISP

BUF

6h 15m1 stop

$494Southwest

Tue, Dec 23 - Fri, Dec 26

5:44 pm - 11:25 am

BUF

ISP

17h 41m2 stops

8:35 pm - 9:08 pm

ISP

BUF

24h 33m1 stop

$564Frontier

Wed, Dec 24 - Sun, Dec 28

11:08 am - 11:25 am

BUF

ISP

24h 17m1 stop

8:35 pm - 9:08 pm

ISP

BUF

24h 33m1 stop

$586Frontier

Wed, Dec 24 - Sun, Dec 28

12:40 pm - 11:55 pm

BUF

ISP

11h 15m2 stops

12:40 pm - 10:25 pm

ISP

BUF

9h 45m2 stops

$637Southwest

Tue, Dec 23 - Fri, Dec 26

Frontier flights from Buffalo to Islip, New York

Our best Frontier deals on Buffalo to Islip, New York flight tickets

Frontier

Jan 15

BUF10:11 amBuffalo

9h 39m

1 stop

ISP7:50 pmIslip Long Island

Jan 18

ISP9:52 amIslip Long Island

10h 11m

1 stop

BUF8:03 pmBuffalo

$277

Find similar

Frontier

Jan 15

BUF10:11 amBuffalo

9h 39m

1 stop

ISP7:50 pmIslip Long Island

Jan 18

ISP8:45 pmIslip Long Island

12h 36m

1 stop

BUF9:21 amBuffalo

$327

Find similar

Frontier

Dec 24

BUF5:44 pmBuffalo

17h 41m

2 stops

ISP11:25 amIslip Long Island

Dec 28

ISP8:35 pmIslip Long Island

24h 33m

1 stop

BUF9:08 pmBuffalo

$564

Find similar

Southwest flights from Buffalo to Islip, New York

Our best Southwest deals on Buffalo to Islip, New York flight tickets

Southwest

Jan 2

BUF6:55 amBuffalo

7h 05m

1 stop

ISP2:00 pmIslip Long Island

Jan 9

ISP6:00 amIslip Long Island

6h 30m

1 stop

BUF12:30 pmBuffalo

$397

Find similar

Southwest

Jan 2

BUF6:55 amBuffalo

7h 05m

1 stop

ISP2:00 pmIslip Long Island

Jan 9

ISP6:00 amIslip Long Island

9h 10m

2 stops

BUF3:10 pmBuffalo

$402

Find similar

Southwest

Jan 2

BUF12:25 pmBuffalo

11h 30m

2 stops

ISP11:55 pmIslip Long Island

Jan 9

ISP6:00 amIslip Long Island

10h 20m

2 stops

BUF4:20 pmBuffalo

$429

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Thu 1/15

10:11 am-7:50 pm

1 stop9h 39m

Islip Long Island

Sun 1/18

9:52 am-8:03 pm

1 stop10h 11m

$277

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Thu 1/15

10:11 am-7:50 pm

1 stop9h 39m

Islip Long Island

Sun 1/18

8:45 pm-9:21 am

1 stop12h 36m

$327

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Fri 1/2

6:55 am-2:00 pm

1 stop7h 05m

Islip Long Island

Fri 1/9

6:00 am-12:30 pm

1 stop6h 30m

$397

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Fri 1/2

6:55 am-2:00 pm

1 stop7h 05m

Islip Long Island

Fri 1/9

6:00 am-3:10 pm

2 stops9h 10m

$402

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Fri 1/2

12:25 pm-11:55 pm

2 stops11h 30m

Islip Long Island

Fri 1/9

6:00 am-4:20 pm

2 stops10h 20m

$429

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Tue 12/23

6:55 am-2:00 pm

1 stop7h 05m

Islip Long Island

Fri 12/26

5:50 pm-12:05 am

1 stop6h 15m

$489

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Tue 12/23

6:55 am-5:15 pm

2 stops10h 20m

Islip Long Island

Fri 12/26

5:50 pm-12:05 am

1 stop6h 15m

$494

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Wed 12/24

5:44 pm-11:25 am

2 stops17h 41m

Islip Long Island

Sun 12/28

8:35 pm-9:08 pm

1 stop24h 33m

$564

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Wed 12/24

11:08 am-11:25 am

1 stop24h 17m

Islip Long Island

Sun 12/28

8:35 pm-9:08 pm

1 stop24h 33m

$586

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Tue 12/23

12:40 pm-11:55 pm

2 stops11h 15m

Islip Long Island

Fri 12/26

12:40 pm-10:25 pm

2 stops9h 45m

$637

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Buffalo to Islip, New York

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

Prices

Airlines

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Buffalo in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $276 when looking at flights departing in the afternoon. Flights to Islip, New York are more costly in the morning, with an average ticket price of $346. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Buffalo to Islip, New York

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

Estimated round-trip price

Cheap Buffalo to Islip, New York (BUF to ISP) flight deals and tips

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

Fastest flight time	7h 05m
Direct flights	None

The fastest flight from Buffalo to Islip, New York takes 7h 05m

There are no direct flights from Buffalo to Islip, New York. There are no popular flight routes from Buffalo to Islip, New York.

Search flight deals

How far is Buffalo to Islip Long Island by plane?
There are 327.4 mi between Buffalo and Islip Long Island. In terms of flight time, this usually takes a little over 7h 05m.
When did momondo last update prices for flights from Buffalo Airport to Islip Long Island Airport?
Prices for flights from Buffalo Airport to Islip Long Island Airport were last updated today.
How many operators does momondo search for flights from Buffalo Airport to Islip Long Island Airport?
As of December 2025, there is 1 operator available to choose from for flights from Buffalo Airport to Islip Long Island Airport.
How old do you have to be to fly from Buffalo Airport to Islip Long Island Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Buffalo Airport to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Buffalo to Islip, New York?
momondo data reveals that the most frequently booked airline on the route from Buffalo to Islip, New York is Southwest, representing 100% of all bookings.

Best airlines flying from Buffalo to Islip, New York

Compare and see reviews for airlines that fly from Buffalo to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $199	Free Cancellation	Rating 7.9 4,252 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Buffalo to Islip flights to just show those with flexible booking policies.

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

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 Islip from Buffalo.

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

Price alerts on flights to Islip from Buffalo are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.