C$187 Cheap Flights from Islip (ISP) to Buffalo Niagara (BUF)

Compare Islip to Buffalo Niagara flight deals

Find the cheapest month or even day of the year to fly to Buffalo Niagara

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Flight deals from Islip to Buffalo Niagara

Looking for a cheap last-minute deal or the best return flight from Islip Airport to Buffalo Niagara Airport? If you want to travel next month, return fares start from C$375. Find the lowest prices on one-way and return 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 July.

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 foundC$187
Cheapest month to flyJuly

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

The best price we found for a return flight from Islip to Buffalo Niagara is C$338. 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 C$338.
As of June 2026, there are no flights flying from Islip to Buffalo Niagara.
The cheapest month to fly from Islip to Buffalo Niagara is usually September.
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, September 17, 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.

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

  • Traveling during a peak period like public or school holidays? Expect longer queues at check-in and security. Give yourself extra leeway and arrive up to four hours before international flights and two hours ahead of domestic departures.

  • We make it simple to get a flight with a stopover. To look at the options for flights from Long Island MacArthur Airport to Buffalo Niagara International Airport, deselect 'Direct flights only.' Then, choose a flight with a stop long enough to explore your chosen city. Some popular stopovers between ISP and BUF include:

    • Baltimore/Wash International Thurgood Marshall Airport

    • Hartsfield-Jackson Atlanta International Airport

    • Raleigh-Durham International Airport

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

  • The lowest price we've seen for a one-way ticket from Long Island MacArthur Airport to Buffalo Niagara International Airport is C$187. For a return flight on this route, the best price is C$338. Depending on the availability and when you book, these fares can change.

  • To get your hands on cheap flight tickets from ISP to BUF, book as early as you can. Airlines tend to offer their best fares when flights are first made available.

  • Finding cheap flight tickets from Long Island MacArthur Airport to Buffalo Niagara International Airport is more likely if you can be flexible with your travel dates. Try using the 'Whole month' function to see the lowest fares across every month and bag a great deal.

  • Sign into your online account or use the app to create a Price Alert. You'll get notified straight away if there's a better deal on this route. It's easy to do, and it'll save you the hassle of searching for cheap flight tickets from ISP to BUF every day.

  • Use filters to tailor your flights from Long Island MacArthur Airport to Buffalo Niagara International Airport. Enter your preferred departure and arrival times, airlines and number of stops. Alternatively, sort your results by 'Cheapest' to see the best deals.

Handy information about Long Island MacArthur Airport (ISP)

  • Long Island MacArthur Airport is about 16 kilometres from central Islip. If you're ride-sharing, catching a cab or driving from the center, it'll take you 17 minutes or so to get there, depending on traffic conditions. If you're planning to take public transport, expect the trip time to be approximately 1 hour and 11 minutes.

  • After a hassle-free start to your travels? Stay near ISP. Whether you have an early flight from Long Island MacArthur Airport to Buffalo Niagara International Airport or just don't want to be rushed, these hotels have you covered:

Arriving at Buffalo Niagara International Airport (BUF)

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

  • Buffalo Niagara International Airport is approximately 18 kilometres from the center of Buffalo. With a cab or in your own car rental, the drive is about 21 minutes.

  • When traveling by public transport, expect a journey time of roughly 1 hour and 15 minutes.

When to fly to Buffalo Niagara International Airport (BUF)

  • It's time to pick your travel dates for your flight from Long Island MacArthur Airport to Buffalo Niagara International Airport. August is the most popular month to visit Buffalo. If you prefer a more relaxed vibe, go in May.

  • Book your flight from Long Island MacArthur Airport to Buffalo Niagara International Airport for July if you want to explore Buffalo during its warmest month. Expect temperatures of between 15ºC and 28ºC.

  • If you want cooler conditions, search for a cheap ticket from ISP to BUF in January. Temperatures average between -10ºC and 2ºC then.

More about Buffalo

Complete your Buffalo trip with hotels and a car rental

  • You've got your cheap ticket to Buffalo Niagara International Airport — next up is finding a place to stay, and perhaps even your own set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in Buffalo.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.