$93 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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Find the cheapest month to fly from Islip to Buffalo Niagara from $93 one-way

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 found$93
Cheapest month to flyJuly

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 $240. 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 $240.
There are no flights flying from Islip to Buffalo Niagara, as of June 2026.
The cheapest month to fly from Islip to Buffalo Niagara is usually July.
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 Saturday, July 18, 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, Frontier Airlines offers the cheapest flight tickets to Buffalo Niagara.

Flying from Islip Airport (ISP) to Buffalo Niagara Airport (BUF): what you need to know

  • Your ISP to BUF flight won't wait if you're running late, so get to the airport with time to spare. Arrive up to one hour in advance for domestic flights and two hours ahead for international travel.

  • During popular months like July, it's a good idea to get to the airport earlier than usual. Arrive two hours before a domestic departure and four hours ahead for an international flight when you travel during a high season in general.

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

    • Atlanta Hartsfield-Jackson Airport

    • Baltimore Washington International Airport

    • Raleigh / Durham Airport

How to find the cheapest flights from Islip Airport (ISP) to Buffalo Niagara Airport (BUF)

  • Right now, $93 is the lowest price we've found for a one-way Islip Airport to Buffalo Niagara Airport flight. The best price for a return plane ticket is $240. Remember that fares can change due to availability when booking.

  • It's usually best to book in advance if you want to find cheap tickets from ISP to BUF. That's because airlines adjust prices based on demand, which tends to increase closer to the date of departure.

  • If you can be flexible with your trip dates, try using the 'Whole month' search function. It'll give you the lowest price in every month when looking for a flight from Islip Airport to Buffalo Niagara Airport.

  • Landing cheap flights from ISP to BUF couldn't be easier with Price Alerts. All you need to do is create one of these automatic alerts and we'll get in touch when a new discounted fare appears.

  • Secure the ideal flight for you with the help of the filters. To see the 'Cheapest,' 'Fastest' or 'Best' flights from Islip Airport to Buffalo Niagara Airport, use the 'Sort by' function. You can also filter results by arrival and departure times, airline, and number of stops.

Handy information about Islip Airport (ISP)

  • ISP's address is 100 Arrivals Avenue.

  • Of all flights departing from Islip Airport, 76% land on time at their destination.

  • Islip Airport is around 4 miles from central Islip. If you're driving, ride-sharing or catching a cab from the center, it'll take 10 minutes or so to get there, depending on the traffic.

  • Taking public transport? Expect a trip time of around 30 minutes.

  • Looking for a convenient hotel close to ISP? If you're boarding an early flight from Islip Airport to Buffalo Niagara Airport, these stays will have you sleeping moments from your check-in counter:

Arriving at Buffalo Niagara Airport (BUF)

  • The last thing you want is a long trip to your hotel if you're arriving on a late Islip Airport to Buffalo Niagara Airport flight. Check in to one of these accommodation options near BUF instead:

  • Pick up a Buffalo Niagara Airport rental car and discover Buffalo and beyond with your own set of wheels. Dollar, Hertz and Budget are top providers to choose from here.

  • Reserving your ride from Buffalo Niagara Airport about two weeks ahead increases your chances of getting a good deal.

When to fly to Buffalo Niagara Airport (BUF)

  • It's time to choose your dates for your flight from Islip Airport to Buffalo Niagara Airport. August is the most popular month to visit Buffalo. If you want a more low-key vibe, go in March.

  • The warmest month in Buffalo is July, with temperatures ranging between 59ºF and 84ºF. Lock in your flights from Islip Airport to Buffalo Niagara Airport in this month if you like this kind of weather.

  • For cooler conditions, search for a cheap ticket from ISP to BUF in January. Average temperatures are between 14ºF and 36ºF then.

Explore more of the United States

  • Buffalo has its own special appeal, but there are so many other corners of the United States you should also see. Around 290 miles south-east of Buffalo, a visit to New York will keep your itinerary busy. Start with leading sights like Central Park, Statue of Liberty and Metropolitan Museum of Art.

  • Around 280 miles south-east of Buffalo, Philadelphia is another essential stop in the United States. Experience this destination's highlights firsthand at Independence Hall, Liberty Bell and Philadelphia Museum of Art.

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