$98 Flights from Islip (ISP) to Buffalo Niagara (BUF)

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Flight deals from Islip to Buffalo Niagara

Looking for a cheap last-minute deal or the best round-trip flight from Islip to Buffalo Niagara? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Islip to Buffalo Niagara

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Islip to Buffalo Niagara flights are currently cheapest in May.

Islip to Buffalo Niagara: Alternative routes

Compare routes from Islip to Buffalo below. You may find an airport to fly into that's cheaper, faster, or easier than Buffalo Niagara.

Islip to Buffalo: Flight information

The things to know before you go.
Cheapest flight found$98
Cheapest month to flyMay

Finding cheap flights from Islip to Buffalo Niagara: Frequently asked questions

The best price we found for a round-trip flight from Islip to Buffalo Niagara is $223. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Islip to Buffalo Niagara. But we found flights with one or more stops from $223.
There are no flights flying from Islip to Buffalo Niagara, as of April 2026.
The cheapest month to fly from Islip to Buffalo Niagara is usually June.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Islip Airport to Buffalo Niagara Airport on Thursday, June 4, 2026.
No airlines currently offer direct flights between Islip Airport and Buffalo Niagara Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Buffalo Niagara but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Buffalo is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Southwest Airlines offers the cheapest flight tickets to Buffalo Niagara.

Traveling from Long Island MacArthur Airport (ISP) to Buffalo Niagara International Airport (BUF): what you need to know

  • For a smooth journey, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you enough time to board your ISP to BUF flight.

  • Be prepared for bigger queues in popular months such as August. Arriving up to four hours in advance for international flights and two hours for a domestic departure will help ensure a smooth travel experience.

  • If you want to add a stop to your trip, simply uncheck 'Direct flights only' when searching for your ticket from Long Island MacArthur Airport to Buffalo Niagara International Airport. These are the top stopovers between ISP and BUF:

    • Baltimore/Wash International Thurgood Marshall Airport

    • Raleigh-Durham International Airport

    • Hartsfield-Jackson Atlanta International Airport

How to find the cheapest flights from Long Island MacArthur Airport (ISP) to Buffalo Niagara International Airport (BUF)

  • The cheapest price we've seen for a one-way Long Island MacArthur Airport to Buffalo Niagara International Airport flight is $98. A round-trip fare is currently $223. Depending on the availability and when you book, these fares can change.

  • Don't wait until the last moment. You're more likely to find cheap tickets from ISP to BUF if you book in advance. Airlines often offer some terrific early bird deals.

  • If you're flexible with your trip dates, try using the 'Whole month' tool. It'll show you the cheapest price across the month when searching for a flight from Long Island MacArthur Airport to Buffalo Niagara International Airport.

  • Stay on top of deals for cheap flights from ISP to BUF by setting up a Price Alert. We'll send you an email or notification on the app when fares go down.

  • Tailor your flights with filters. Choose your ideal arrival and departure times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from Long Island MacArthur Airport to Buffalo Niagara International Airport.

Handy information about Long Island MacArthur Airport (ISP)

  • You'll find ISP at 100 Arrivals Avenue.

  • When it comes to Long Island MacArthur Airport's on-time performance, 77.45% of flights arrive within the expected timeframe.

  • To get to Long Island MacArthur Airport from central Islip, it'll take about 15 minutes by car. This depends on traffic, however. It's approximately 10 miles from the airport to the city center.

  • The trip when using public transport takes about 1 hour 10 minutes.

  • Get your vacation off to a stress-free start by staying near ISP. Whether you're catching an early flight from Long Island MacArthur Airport to Buffalo Niagara International Airport or just don't like being rushed, these stays are ideal:

Arriving at Buffalo Niagara International Airport (BUF)

  • If you're arriving on a late Long Island MacArthur Airport to Buffalo Niagara International Airport flight, nothing tops the convenience of staying close to the terminal. Pick up your bags from the carousel and then be tucked up in bed not long after at one of these options near BUF:

  • Go where the road takes you with a Buffalo Niagara International Airport rental car. Book your wheels from Dollar, Hertz or Budget and venture far and wide through Buffalo and beyond.

  • Secure the lowest price by booking your ride from Buffalo Niagara International Airport around two weeks ahead of your trip.

Getting from Buffalo Niagara International Airport (BUF) to central Buffalo

  • You'll find BUF at Genesee Street.

  • Buffalo Niagara International Airport is approximately 11 miles from the center of Buffalo. The drive time takes around 20 minutes.

  • If you're traveling by public transport, expect a journey time of around 1 hour 15 minutes.

When to fly to Buffalo Niagara International Airport (BUF)

  • August is the most popular month for flights from Long Island MacArthur Airport to Buffalo Niagara International Airport. For smaller crowds, go to Buffalo in May.

  • Book your flight from Long Island MacArthur Airport to Buffalo Niagara International Airport for July if you want to visit Buffalo during its warmest month. You can expect temperatures of between 59ºF and 82ºF.

  • January has average temperatures of between 14ºF and 36ºF. Search for cheap tickets from ISP to BUF around that time if you like cooler conditions.

Explore more of United States

  • New York is just one of the many cities in United States waiting to be explored after you've experienced Buffalo. Around 290 miles away to the south-east, its best attractions include Statue of Liberty, Central Park and Empire State Building.

  • Philadelphia is another must-experience destination in United States and is around 280 miles south-east of Buffalo. No trip is complete without experiencing Liberty Bell, Independence Hall and Philadelphia Museum of Art.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.