$494 Cheap Flights from Islip (ISP) to Erie (ERI)

View $494 flight on Thu, Jul 17, 2025Opens in a new window

Popular airlines from MacArthur Airport (ISP) to Erie, PA (ERI-Erie Intl.)

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Cheap Flights from Islip to Erie (ISP-ERI)

Prices were available within the past 7 days and start at $494 for one-way flights and $994 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cape Air
Wed, Aug 6 - Sat, Aug 9
ISP
Islip
ERI
Erie
$994 Roundtrip, found 6 days ago
$994
Roundtrip
found 6 days ago
Select Cape Air flight, departing Wed, Aug 6 from Islip to Erie, returning Sat, Aug 9, priced at $994 found 6 days ago
Cape Air
Wed, Aug 6 - Sat, Aug 9
ISP
Islip
ERI
Erie
$1,023 Roundtrip, found 6 days ago
$1,023
Roundtrip
found 6 days ago
Select Cape Air flight, departing Wed, Aug 6 from Islip to Erie, returning Sat, Aug 9, priced at $1,023 found 6 days ago
Cape Air
Thu, Apr 16 - Thu, Apr 30
ISP
Islip
ERI
Erie
$1,113 Roundtrip, found 4 days ago
$1,113
Roundtrip
found 4 days ago
Select Cape Air flight, departing Thu, Apr 16 from Islip to Erie, returning Thu, Apr 30, priced at $1,113 found 4 days ago
Cape Air
Wed, Aug 6 - Sat, Aug 9
ISP
Islip
ERI
Erie
$1,153 Roundtrip, found 1 day ago
$1,153
Roundtrip
found 1 day ago
Select Cape Air flight, departing Wed, Aug 6 from Islip to Erie, returning Sat, Aug 9, priced at $1,153 found 1 day ago
Cape Air
Wed, Aug 6 - Sat, Aug 9
ISP
Islip
ERI
Erie
$1,182 Roundtrip, found 1 day ago
$1,182
Roundtrip
found 1 day ago
Select Cape Air flight, departing Wed, Aug 6 from Islip to Erie, returning Sat, Aug 9, priced at $1,182 found 1 day ago
Cape Air
Wed, Aug 6 - Sat, Aug 9
ISP
Islip
ERI
Erie
$1,193 Roundtrip, found 1 day ago
$1,193
Roundtrip
found 1 day ago
Select Cape Air flight, departing Wed, Aug 6 from Islip to Erie, returning Sat, Aug 9, priced at $1,193 found 1 day ago
Cape Air
Thu, Apr 16 - Thu, Apr 30
ISP
Islip
ERI
Erie
$1,207 Roundtrip, found 4 days ago
$1,207
Roundtrip
found 4 days ago
Select Cape Air flight, departing Thu, Apr 16 from Islip to Erie, returning Thu, Apr 30, priced at $1,207 found 4 days ago
Cape Air
Wed, Aug 6 - Sat, Aug 9
ISP
Islip
ERI
Erie
$1,222 Roundtrip, found 1 day ago
$1,222
Roundtrip
found 1 day ago
Select Cape Air flight, departing Wed, Aug 6 from Islip to Erie, returning Sat, Aug 9, priced at $1,222 found 1 day ago
Flights from Islip (ISP) to Erie (ERI)
Origin airport
MacArthur
Destination airport
Erie Intl.
Roundtrip price
$994
Distance
377 mi

Islip to Erie Flights

The cheapest times to fly from Islip to Erie

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 Erie are during the month of August. You can find some of the cheapest flights from Islip to Erie with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Islip to Erie

Sunday is one of the best days to book for cheap flights from Islip to Erie: 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 Erie

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 Erie in 2025. You can also book with separate airlines for your outbound and return journeys, from $494 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 Erie 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 Erie 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.

 

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Erie Intl. Airport (ERI) cost?
Discover the latest flight deals from ISP to ERI by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ISP to ERI?
The cheapest flights from ISP to ERI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from ISP to ERI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ISP to ERI. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from MacArthur Airport (ISP) to Erie Intl. Airport (ERI)?
There aren't any daily nonstop flights departing from MacArthur Airport (ISP) to Erie Intl. Airport (ERI). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from ISP to ERI?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can change depending on a range of factors, such as the airline and season.*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 Erie Intl. Airport (ERI)?
To avoid potential delays on the MacArthur Airport (ISP) to Erie Intl. Airport (ERI) route, travel before 3 PM. Later departures have a 22% higher chance of being canceled.**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 Erie Intl. Airport (ERI) last-minute?
Waiting until just before your trip to book a flight from ISP to ERI often results in higher prices. While you might find some last-minute offers, they aren't always guaranteed. Be flexible with your travel plans for a better chance of scoring a bargain.
Is it cheaper to book an ISP to ERI flight and hotel package?
Compared with arranging hotels and flights separately, booking an ISP to ERI flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place will take the hassle out of planning your trip. Simply pick your flights and select from our wide range of stays, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Erie Intl. Airport (ERI)?
If you booked your ISP to ERI flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you want more information.

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*Available to One Key members.