BUF - ISP

$79 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 11/19. 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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Flights 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

Fri, Jul 11 - Sun, Jul 13
Southwest Logo
5:35 am - 9:25 amBUF-ISP
3h 50m1 stop
Southwest Logo
1:20 pm - 12:05 amISP-BUF
10h 45m2 stops
$322Southwest
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Fri, Jul 11 - Sun, Jul 13
Southwest Logo
11:15 am - 8:35 pmBUF-ISP
9h 20m2 stops
Southwest Logo
1:20 pm - 12:05 amISP-BUF
10h 45m2 stops
$398Southwest
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Fri, Jun 27 - Sat, Jun 28
Frontier Logo
8:50 am - 7:36 pmBUF-ISP
10h 46m1 stop
Frontier Logo
8:21 pm - 8:56 amISP-BUF
12h 35m1 stop
$560Frontier
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Fri, Aug 15 - Mon, Aug 18
Logo
3:55 pm - 10:51 amBUF-ISP
18h 56m1 stop
Logo
11:53 am - 9:04 amISP-BUF
21h 11m1 stop
$579
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Fri, Jun 27 - Sun, Jun 29
Frontier Logo
8:50 am - 7:36 pmBUF-ISP
10h 46m1 stop
Frontier Logo
8:21 pm - 7:50 amISP-BUF
11h 29m1 stop
$580Frontier
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Tue, Jul 1 - Sat, Jul 5
Logo
8:30 am - 12:26 pmBUF-ISP
27h 56m1 stop
Logo
2:19 pm - 9:11 pmISP-BUF
6h 52m1 stop
$679
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Mon, Jun 30 - Mon, Jul 7
Logo
3:55 pm - 1:43 pmBUF-ISP
21h 48m1 stop
Logo
4:33 pm - 10:09 amISP-BUF
17h 36m1 stop
$850
Find Deal
Useful Info

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 ($322) and Frontier ($560).

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Good to know

Low seasonAugust
High seasonSeptember
Cheapest flight$79
Best time to beat the crowds with an average 69% drop in price.
Most popular time to fly with an average 4% increase in price.
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 $79 for a one-way ticket and $322 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 4280 reviews
8.2Boarding
7.6Entertainment
7.1Food
8.0Comfort
8.6Crew
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

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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