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Cheap flights from Buffalo to New York from $121

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to New York departing on 6/7. 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

Find the cheapest flights from Buffalo to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
6:00 am - 11:35 am
BUF
-
ISP
5h 35m
1 stop
Southwest Logo
6:50 am - 6:35 pm
ISP
-
BUF
11h 45m
1 stop
$249Southwest
Sat, May 30 - Mon, Jun 1
Southwest Logo
3:40 pm - 11:20 pm
BUF
-
ISP
7h 40m
2 stops
Southwest Logo
6:50 am - 6:35 pm
ISP
-
BUF
11h 45m
1 stop
$255Southwest
Sat, May 30 - Mon, Jun 1
Frontier Logo
7:57 pm - 3:56 pm
BUF
-
ISP
19h 59m
1 stop
Frontier Logo
9:52 pm - 7:12 pm
ISP
-
BUF
21h 20m
1 stop
$309Frontier
Mon, Jun 15 - Mon, Jun 22
Southwest Logo
3:40 pm - 11:20 pm
BUF
-
ISP
7h 40m
2 stops
Southwest Logo
8:35 am - 6:15 pm
ISP
-
BUF
9h 40m
2 stops
$310Southwest
Sat, May 30 - Mon, Jun 1
Southwest Logo
12:40 pm - 4:30 pm
BUF
-
ISP
3h 50m
1 stop
Southwest Logo
5:50 pm - 12:10 am
ISP
-
BUF
6h 20m
1 stop
$327Southwest
Mon, Jun 1 - Thu, Jun 4
Southwest Logo
4:00 pm - 8:25 pm
BUF
-
ISP
4h 25m
1 stop
Southwest Logo
5:50 pm - 12:10 am
ISP
-
BUF
6h 20m
1 stop
$334Southwest
Mon, Jun 1 - Fri, Jun 5
Frontier Logo
2:50 pm - 3:56 pm
BUF
-
ISP
25h 06m
2 stops
Frontier Logo
9:52 pm - 7:12 pm
ISP
-
BUF
21h 20m
1 stop
$337Frontier
Mon, Jun 15 - Mon, Jun 22
Southwest Logo
6:05 am - 11:55 am
BUF
-
ISP
5h 50m
1 stop
Southwest Logo
4:40 pm - 8:40 pm
ISP
-
BUF
4h 00m
1 stop
$341Southwest
Tue, May 19 - Sat, May 23
Southwest Logo
9:25 am - 6:30 pm
BUF
-
ISP
9h 05m
2 stops
Southwest Logo
4:40 pm - 8:40 pm
ISP
-
BUF
4h 00m
1 stop
$346Southwest
Tue, May 19 - Sat, May 23
Multiple Airlines Logo
7:52 pm - 4:47 pm
BUF
-
ISP
20h 55m
2 stops
Multiple Airlines Logo
11:00 am - 6:59 pm
ISP
-
BUF
7h 59m
1 stop
$356Multiple Airlines
Mon, Jun 1 - Fri, Jun 5

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Southwest flights from Buffalo to Islip, New York

Our best Southwest deals on Buffalo to Islip, New York flight tickets
Southwest
May 30
BUF6:00 amBuffalo
5h 35m
1 stop
ISP11:35 amIslip Long Island
Jun 1
ISP6:50 amIslip Long Island
11h 45m
1 stop
BUF6:35 pmBuffalo
$249
Southwest
May 30
BUF3:40 pmBuffalo
7h 40m
2 stops
ISP11:20 pmIslip Long Island
Jun 1
ISP6:50 amIslip Long Island
11h 45m
1 stop
BUF6:35 pmBuffalo
$255
Southwest
May 30
BUF3:40 pmBuffalo
7h 40m
2 stops
ISP11:20 pmIslip Long Island
Jun 1
ISP8:35 amIslip Long Island
9h 40m
2 stops
BUF6:15 pmBuffalo
$310

Frontier flights from Buffalo to Islip, New York

Our best Frontier deals on Buffalo to Islip, New York flight tickets
Frontier
Jun 15
BUF7:57 pmBuffalo
19h 59m
1 stop
ISP3:56 pmIslip Long Island
Jun 22
ISP9:52 pmIslip Long Island
21h 20m
1 stop
BUF7:12 pmBuffalo
$309
Frontier
Jun 15
BUF2:50 pmBuffalo
25h 06m
2 stops
ISP3:56 pmIslip Long Island
Jun 22
ISP9:52 pmIslip Long Island
21h 20m
1 stop
BUF7:12 pmBuffalo
$337

momondo Fare Finder

 
Customize your flight search to find flights from Buffalo to Islip, New York 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 6, 2026.
Use the filters below to find and compare flights from Buffalo to Islip, New York that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Sat 5/30

6:00 am-11:35 am

1 stop5h 35m

Islip Long Island

Mon 6/1

6:50 am-6:35 pm

1 stop11h 45m

$249

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Sat 5/30

3:40 pm-11:20 pm

2 stops7h 40m

Islip Long Island

Mon 6/1

6:50 am-6:35 pm

1 stop11h 45m

$255

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Mon 6/15

7:57 pm-3:56 pm

1 stop19h 59m

Islip Long Island

Mon 6/22

9:52 pm-7:12 pm

1 stop21h 20m

$309

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Sat 5/30

3:40 pm-11:20 pm

2 stops7h 40m

Islip Long Island

Mon 6/1

8:35 am-6:15 pm

2 stops9h 40m

$310

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Mon 6/1

12:40 pm-4:30 pm

1 stop3h 50m

Islip Long Island

Thu 6/4

5:50 pm-12:10 am

1 stop6h 20m

$327

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Mon 6/1

4:00 pm-8:25 pm

1 stop4h 25m

Islip Long Island

Fri 6/5

5:50 pm-12:10 am

1 stop6h 20m

$334

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Mon 6/15

2:50 pm-3:56 pm

2 stops25h 06m

Islip Long Island

Mon 6/22

9:52 pm-7:12 pm

1 stop21h 20m

$337
Quickest round-trip

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Tue 5/19

6:05 am-11:55 am

1 stop5h 50m

Islip Long Island

Sat 5/23

4:40 pm-8:40 pm

1 stop4h 00m

$341

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Tue 5/19

9:25 am-6:30 pm

2 stops9h 05m

Islip Long Island

Sat 5/23

4:40 pm-8:40 pm

1 stop4h 00m

$346

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Mon 6/1

7:52 pm-4:47 pm

2 stops20h 55m

Islip Long Island

Fri 6/5

11:00 am-6:59 pm

1 stop7h 59m

$356

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to New York from

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

What is the cheapest airline that flies from Buffalo to Islip Long Island?

Frontier and Southwest are the most popular carriers operating from Buffalo to Islip Long Island

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 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

5h 35m

Direct flights

None
The fastest flight from Buffalo to Islip, New York takes 5h 35m
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

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

  • 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 5h 35m.

  • 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 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.

Traveling to a place near New York?

Book flights to New York if you plan to visit one of these locations
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.

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