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Cheap flights from Buffalo to New York from $144

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 3/20. 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

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Find the cheapest flights from Buffalo to New York

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
9:40 am - 2:50 pm
BUF
-
ISP
5h 10m
1 stop
Southwest Logo
6:00 am - 12:10 pm
ISP
-
BUF
6h 10m
1 stop
$314Southwest
Sat, Jul 18 - Tue, Jul 21
Southwest Logo
9:40 am - 2:50 pm
BUF
-
ISP
5h 10m
1 stop
Southwest Logo
6:00 am - 2:20 pm
ISP
-
BUF
8h 20m
2 stops
$319Southwest
Sat, Jul 18 - Tue, Jul 21
Southwest Logo
6:00 am - 10:15 am
BUF
-
ISP
4h 15m
1 stop
Southwest Logo
6:10 am - 11:10 am
ISP
-
BUF
5h 00m
1 stop
$329Southwest
Wed, Aug 12 - Mon, Aug 24
Southwest Logo
6:00 am - 10:15 am
BUF
-
ISP
4h 15m
1 stop
Southwest Logo
1:15 pm - 10:40 pm
ISP
-
BUF
9h 25m
2 stops
$334Southwest
Wed, Aug 12 - Mon, Aug 24
Southwest Logo
6:05 am - 11:50 am
BUF
-
ISP
5h 45m
1 stop
Southwest Logo
3:05 pm - 7:15 pm
ISP
-
BUF
4h 10m
1 stop
$347Southwest
Thu, Jun 4 - Fri, Jun 5
Southwest Logo
2:50 pm - 11:40 pm
BUF
-
ISP
8h 50m
2 stops
Southwest Logo
3:05 pm - 7:15 pm
ISP
-
BUF
4h 10m
1 stop
$352Southwest
Thu, Jun 4 - Fri, Jun 5
Southwest Logo
5:20 pm - 11:30 pm
BUF
-
ISP
6h 10m
1 stop
Southwest Logo
6:05 am - 2:15 pm
ISP
-
BUF
8h 10m
1 stop
$364Southwest
Thu, May 14 - Sun, May 17
Southwest Logo
12:35 pm - 9:05 pm
BUF
-
ISP
8h 30m
2 stops
Southwest Logo
12:35 pm - 10:15 pm
ISP
-
BUF
9h 40m
2 stops
$367Southwest
Wed, Aug 12 - Mon, Aug 24
Frontier Logo
11:25 am - 9:13 am
BUF
-
ISP
21h 48m
1 stop
Frontier Logo
4:07 pm - 12:13 pm
ISP
-
BUF
20h 06m
2 stops
$372Frontier
Thu, May 14 - Sun, May 17
Southwest Logo
2:50 pm - 11:40 pm
BUF
-
ISP
8h 50m
2 stops
Southwest Logo
6:00 am - 3:25 pm
ISP
-
BUF
9h 25m
2 stops
$377Southwest
Thu, Jun 4 - Fri, Jun 5

Southwest flights from Buffalo to Islip, New York

Our best Southwest deals on Buffalo to Islip, New York flight tickets
Southwest
Jul 18
BUF9:40 amBuffalo
5h 10m
1 stop
ISP2:50 pmIslip Long Island
Jul 21
ISP6:00 amIslip Long Island
6h 10m
1 stop
BUF12:10 pmBuffalo
$314
Southwest
Jul 18
BUF9:40 amBuffalo
5h 10m
1 stop
ISP2:50 pmIslip Long Island
Jul 21
ISP6:00 amIslip Long Island
8h 20m
2 stops
BUF2:20 pmBuffalo
$319
Southwest
Aug 12
BUF6:00 amBuffalo
4h 15m
1 stop
ISP10:15 amIslip Long Island
Aug 24
ISP6:10 amIslip Long Island
5h 00m
1 stop
BUF11:10 amBuffalo
$329

Frontier flights from Buffalo to Islip, New York

Our best Frontier deals on Buffalo to Islip, New York flight tickets
Frontier
May 14
BUF11:25 amBuffalo
21h 48m
1 stop
ISP9:13 amIslip Long Island
May 17
ISP4:07 pmIslip Long Island
20h 06m
2 stops
BUF12:13 pmBuffalo
$372
Frontier
Mar 5
BUF12:24 pmBuffalo
24h 23m
1 stop
ISP12:47 pmIslip Long Island
Mar 8
ISP5:08 pmIslip Long Island
17h 41m
1 stop
BUF10:49 amBuffalo
$465

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 March 2, 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

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Sat 7/18

9:40 am-2:50 pm

1 stop5h 10m

Islip Long Island

Tue 7/21

6:00 am-12:10 pm

1 stop6h 10m

$314

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Sat 7/18

9:40 am-2:50 pm

1 stop5h 10m

Islip Long Island

Tue 7/21

6:00 am-2:20 pm

2 stops8h 20m

$319

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Wed 8/12

6:00 am-10:15 am

1 stop4h 15m

Islip Long Island

Mon 8/24

6:10 am-11:10 am

1 stop5h 00m

$329

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Wed 8/12

6:00 am-10:15 am

1 stop4h 15m

Islip Long Island

Mon 8/24

1:15 pm-10:40 pm

2 stops9h 25m

$334

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Thu 6/4

6:05 am-11:50 am

1 stop5h 45m

Islip Long Island

Fri 6/5

3:05 pm-7:15 pm

1 stop4h 10m

$347

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Thu 6/4

2:50 pm-11:40 pm

2 stops8h 50m

Islip Long Island

Fri 6/5

3:05 pm-7:15 pm

1 stop4h 10m

$352

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Thu 5/14

5:20 pm-11:30 pm

1 stop6h 10m

Islip Long Island

Sun 5/17

6:05 am-2:15 pm

1 stop8h 10m

$364

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Wed 8/12

12:35 pm-9:05 pm

2 stops8h 30m

Islip Long Island

Mon 8/24

12:35 pm-10:15 pm

2 stops9h 40m

$367

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Thu 5/14

11:25 am-9:13 am

1 stop21h 48m

Islip Long Island

Sun 5/17

4:07 pm-12:13 pm

2 stops20h 06m

$372

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

Thu 6/4

2:50 pm-11:40 pm

2 stops8h 50m

Islip Long Island

Fri 6/5

6:00 am-3:25 pm

2 stops9h 25m

$377

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

Southwest is the most popular carrier 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 36% 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

4h 15m

Direct flights

None
The fastest flight from Buffalo to Islip, New York takes 4h 15m
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 4h 15m.

  • 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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