BUF - ISP

$215 Find Cheap Flights from Buffalo to Islip

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Buffalo to Islip departing on 11/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Islip

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Islip, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Buffalo to Islip, as well as popular online travel agencies
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41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$294
Typical prices: $567-$623
Southwest
Wed 11/5Wed 11/12
BUF - ISP • 1 stop
Cheapest one-way
$215
Typical prices: $99-$135
Southwest
Fri 11/28
BUF - ISP • 2 stops
Top airlines
Southwest
Cheapest • from $294 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Buffalo to Islip (BUF-ISP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Buffalo to Islip that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Buffalo to Islip

Wed, Nov 5 - Wed, Nov 12
Southwest Logo
9:30 am - 3:20 pmBUF-ISP
5h 50m1 stop
Southwest Logo
5:40 am - 2:20 pmISP-BUF
8h 40m1 stop
$294Southwest
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Wed, Nov 5 - Wed, Nov 12
Southwest Logo
7:00 am - 3:20 pmBUF-ISP
8h 20m2 stops
Southwest Logo
5:40 am - 2:20 pmISP-BUF
8h 40m1 stop
$300Southwest
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Wed, Oct 22 - Fri, Oct 24
Southwest Logo
4:15 pm - 10:05 pmBUF-ISP
5h 50m1 stop
Southwest Logo
12:35 pm - 4:35 pmISP-BUF
4h 00m1 stop
$301Southwest
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Thu, Nov 6 - Thu, Nov 13
Southwest Logo
3:40 pm - 11:50 pmBUF-ISP
8h 10m1 stop
Southwest Logo
5:50 am - 12:00 pmISP-BUF
6h 10m1 stop
$302Southwest
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Wed, Oct 22 - Fri, Oct 24
Southwest Logo
6:20 am - 3:20 pmBUF-ISP
9h 00m2 stops
Southwest Logo
12:35 pm - 4:35 pmISP-BUF
4h 00m1 stop
$306Southwest
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Mon, Nov 17 - Sun, Nov 23
Frontier Logo
9:53 pm - 5:42 pmBUF-ISP
19h 49m1 stop
Frontier Logo
6:00 am - 1:04 pmISP-BUF
7h 04m1 stop
$358Frontier
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Fri, Oct 24 - Tue, Oct 28
Frontier Logo
9:13 pm - 10:37 amBUF-ISP
13h 24m1 stop
Frontier Logo
6:27 pm - 1:37 pmISP-BUF
43h 10m2 stops
$401Frontier
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Mon, Nov 17 - Sun, Nov 23
Multiple Airlines Logo
9:53 pm - 5:42 pmBUF-ISP
19h 49m1 stop
Multiple Airlines Logo
11:40 am - 4:20 pmISP-BUF
28h 40m2 stops
$454Multiple Airlines
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Fri, Oct 24 - Tue, Oct 28
JetBlue Logo
8:00 am - 3:20 pmBUF-ISP
7h 20m1 stop
JetBlue Logo
1:57 pm - 10:27 pmISP-BUF
8h 30m1 stop
$499JetBlue
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Tue, Oct 21 - Fri, Oct 24
JetBlue Logo
8:00 am - 3:20 pmBUF-ISP
7h 20m1 stop
JetBlue Logo
11:35 am - 9:46 pmISP-BUF
10h 11m1 stop
$585JetBlue
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Booking Insights

KAYAK's insights & trends for Buffalo to Islip flights

Get data-powered insights and trends into flights from Buffalo to Islip to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Buffalo to Islip?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Buffalo to Islip were found on Southwest ($294) and Frontier ($358).

Which airlines fly non-stop between Buffalo and Islip?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Buffalo to Islip.

There is just one airline that flies from Buffalo to Islip direct and that is Southwest. The best round-trip deal found from Southwest for the route is $199.

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Good to know

Low seasonOctober
Cheapest flight$215
Best time to beat the crowds with an average 47% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Buffalo to Islip

When to book flights from Buffalo to Islip

Are your dates flexible? Find out the best times to travel from Buffalo to Islip based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Buffalo to Islip

  • What is the cheapest flight from Buffalo to Islip?

    In the last 3 days, the lowest price for a flight from Buffalo to Islip was $215 for a one-way ticket and $294 for a round-trip.

  • Do I need a passport to fly between Buffalo and Islip?

    A passport is not required to fly from Buffalo to Islip.

  • Which aircraft models fly most regularly from Buffalo to Islip?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Buffalo to Islip?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Buffalo to Islip.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Buffalo to Islip?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Buffalo is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Buffalo to Islip?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Islip with an airline and back to Buffalo with another airline. Booking your flights between Buffalo and ISP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Buffalo to Islip?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Islip from Buffalo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Buffalo to Islip

 
See real verified KAYAK customer reviews for airlines flying from Buffalo to Islip. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Buffalo to Islip? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4237 reviews
8.0Comfort
7.5Entertainment
8.1Boarding
7.0Food
8.6Crew
Airline reviews

mandatory demand customer to check their carry on because not enough people check bags.

6.0 GoodHung, Oct 2025PHX - ABQ
Read more Southwest reviews

mandatory demand customer to check their carry on because not enough people check bags.

Connecting flight is on time and boarding was a breeze!

Excellent. Would encourage Southwest to keep current boarding procedures with free style seating. Makes for a fantastic experience

As always, the entire Southwest experience was perfect. Purchasing the tickets on the Southwest web site was effortless, departure and arrival gates were spotless and comfortable, plane was clean and comfortable, crew was excellent and flight was on time. Wheelchair service in Las Vegas at departure was somewhat chaotic and disjointed, but I am not sure if that was Southwest problem, airport problem or combination.

I wish they had movie screens in the headrests. The seats are much improved, more legroom and recently renovated. Bathroom was clean. Staff was outstanding!!

As always, the entire Southwest experience was wonderful, from online booking to flight to baggage retrieval. Very grateful.

The weather could have been better. There was a 40 minute ATC delay in SFO because of marine fog and a micro cell storm delayed landing and take-off at Nashville. The gate was changed 5 minutes from boarding from gate B3 to gate C23 at Nashville airport.

After being assaulted by a flight attendant I was then brushed off as oh well because he long braids didn’t mean to whip me in the eye. I have filed complaints and will see. But like any other issue I’ve had with kayak involved it’s been trash. Last time I’ll be using your app

AC sub par. WiFi not working correctly. Ac sucked. Seats very narrow.

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

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

Information on your arrival and departure airports

Buffalo (BUF)
Islip (ISP)

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