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Islip

$113+ Cheap flights from Buffalo to Islip, NY (BUF - ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — ISP
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheap flight deals from Buffalo to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated junio 12, 2025.

Round-trip from

$270
(Southwest)

One-way from

$113
(Southwest)

Popular in

November

Cheapest in

August

Average price

$376
From Buffalo to Islip Long Island
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One-way flight from Buffalo to Islip Long Island
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Highest demand for flights based on searches. 25% potential increase in price ($111 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Buffalo to Islip

Cheapest flights from Buffalo to Islip
Explore the most affordable flight options available from Buffalo to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.

This Southwest deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/106:00 pmBUF - ISP
1 stop6h 05mSouthwest
jue. 7/175:45 pmISP - BUF
1 stop3h 20mSouthwest
Deal found 6/11$270
This Booking.com deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/228:55 pmBUF - ISP
1 stop19h 16mFrontier
dom. 8/249:01 pmISP - BUF
1 stop23h 09mFrontier
Deal found 6/11$320
This KAYAK deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/247:20 amBUF - ISP
1 stop27h 31mJetBlue
mié. 8/2712:35 pmISP - BUF
1 stop9h 54mJetBlue
Deal found 6/11$401
This JetBlue Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/97:22 amBUF - ISP
1 stop6h 02mMultiple Airlines
jue. 7/1011:40 amISP - BUF
1 stop10h 50mMultiple Airlines
Deal found 6/10$660

Cheapflights Fare Finder

Customize your flight search to find flights from Buffalo to Islip 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, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Buffalo to Islip that are best for you.

Fly from

Buffalo

Fly to

Islip

Route

Depart

Return

Price

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

jue. 7/10

6:00 pm-12:05 am

1 stop6h 05m

Islip Long Island

jue. 7/17

5:45 pm-9:05 pm

1 stop3h 20m

$270

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

vie. 8/22

8:55 pm-4:11 pm

1 stop19h 16m

Islip Long Island

dom. 8/24

9:01 pm-8:10 pm

1 stop23h 09m

$320

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

dom. 8/24

7:20 am-10:51 am

1 stop27h 31m

Islip Long Island

mié. 8/27

12:35 pm-10:29 pm

1 stop9h 54m

$401

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

mié. 7/9

7:22 am-1:24 pm

1 stop6h 02m

Islip Long Island

jue. 7/10

11:40 am-10:30 pm

1 stop10h 50m

$660

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

vie. 7/25

5:35 am-9:25 am

1 stop3h 50m

$113

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

jue. 6/26

9:07 pm-7:36 pm

1 stop22h 29m

$199

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

vie. 8/1

11:35 am-6:45 pm

3 stops31h 10m

$446

BuffaloIslip

BUF - ISP

BUFISP

Buffalo

dom. 6/22

7:10 am-1:43 pm

1 stop6h 33m

$578

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Buffalo to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Buffalo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Buffalo to Islip

What is the cheapest month to book a flight from Buffalo to Islip, New York?

Currently, January is the cheapest month in which you can book a flight from Buffalo to Islip, New York (average of $108). Flying from Buffalo to Islip, New York in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BUF to ISP?

Find hourly flight availability from Buffalo to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.

One of the essential ways to save on airfare from Buffalo to Islip, New York is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 21% on airfare.

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated junio 12, 2025.
Southwest
8.0
Very good
4,287 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,287 reviews
Southwest
8.0
Very good
4,287 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
JetBlue
7.3
Good
2,925 reviews
Southwest
8.0
Very good
4,287 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Frontier
6.0
Okay
3,295 reviews
Southwest
8.0
Very good
4,287 reviews

Overall

8.0

Entertainment

7.6

Comfort

8.0

Food

7.1

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Buffalo to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Buffalo to Islip, New York round-trip?

    Southwest, at $270, was found to be the cheapest airline from Buffalo to Islip, New York.Alternate airlines to your destination round-trip include Frontier and JetBlue. You may be able to fly from Buffalo to Islip, New York for 16% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Buffalo to Islip, New York one-way?

    The cheapest airlines for a one-way flight from Buffalo to Islip, New York are Southwest ($113), Frontier ($199), and JetBlue ($578).

  • Can I find deals for flights from Buffalo to Islip that include hotel bookings?

    Yes. In addition to deals on Buffalo to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buffalo to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buffalo to Islip.

  • Can I find deals for business class flights from Buffalo to Islip?

    Yes. Cheapflights offers flight deals from Buffalo to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Buffalo to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from Buffalo to Islip, New York (average of $108). Flying from Buffalo to Islip, New York in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Buffalo to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Buffalo to Islip

Discover the top airline that operate flights from Buffalo to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$294Average$396FlexibilityNo cancel feeOn-time63%

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