Cheap Flights from Islip (ISP) to Niagara Falls (IAG)

Popular airlines from MacArthur Airport (ISP) to Niagara Falls, NY (IAG-Niagara Falls Intl.)

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Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG) cost?
Lock in a cheap one-way flight or cheap return flight from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG)?
Planning your trip for can help you save, as it's the cheapest month for flights between ISP and IAG. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest ISP to IAG flight.
How many flights per day from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG)?
You'll have to catch a flight with a layover if you're traveling from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from ISP to IAG?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG)?
To avoid possible delays on the MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG) route, aim to travel before 3 PM. Departures after this time have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG) last-minute?
Last-minute fares from ISP to IAG are usually more expensive. To secure the best rates, start looking for flights early. That being said, if you're flexible with your travel dates, you may find a cheap ticket right before your trip.
Is it cheaper to book an ISP to IAG flight and hotel package?
You'll generally save money by securing an ISP to IAG flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've chosen your preferred accommodations and flights, consider adding extras such as activities, car rentals and tours.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Niagara Falls Intl. Airport (IAG)?
Typically, you're able to reschedule or cancel your ISP to IAG flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want more details, visit our Customer Service portal.

Travel information

Travel information

Origin airport
MacArthur
Destination airport
Niagara Falls Intl.
Distance
340 mi

Book with confidence

Book with confidence

Islip to Niagara Falls Flights

The cheapest times to fly from Islip to Niagara Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to Niagara Falls are during the month of . You can find some of the cheapest flights from Islip to Niagara Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Niagara Falls

Sunday is one of the best days to book for cheap flights from Islip to Niagara Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Islip to Niagara Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to Niagara Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to Niagara Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Islip to Niagara Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Islip to Niagara Falls Flights

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*Available to One Key members.