$86 Cheap Flights from Detroit (DTW) to Islip (ISP)

View $86 flight on Mon, Nov 17, 2025Opens in a new window

Popular airlines from Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP)

Cheap Flights from Detroit to Islip (DTW-ISP)

Prices were available within the past 7 days and start at $86 for one-way flights and $120 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Nov 13 - Wed, Nov 19
DTW
Detroit
ISP
Islip
$120 Roundtrip, found 5 days ago
$120
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, Nov 13 from Detroit to Islip, returning Wed, Nov 19, priced at $120 found 5 days ago
Frontier Airlines
Mon, Nov 17 - Thu, Dec 4
DTW
Detroit
ISP
Islip
$140 Roundtrip, found 1 day ago
$140
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Mon, Nov 17 from Detroit to Islip, returning Thu, Dec 4, priced at $140 found 1 day ago
Frontier Airlines
Fri, Nov 14 - Wed, Nov 19
DTW
Detroit
ISP
Islip
$153 Roundtrip, found 5 days ago
$153
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Nov 14 from Detroit to Islip, returning Wed, Nov 19, priced at $153 found 5 days ago
Frontier Airlines
Thu, Dec 11 - Mon, Dec 15
DTW
Detroit
ISP
Islip
$160 Roundtrip, found 9 hours ago
$160
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Dec 11 from Detroit to Islip, returning Mon, Dec 15, priced at $160 found 9 hours ago
Frontier Airlines
Sun, Nov 16 - Wed, Nov 19
DTW
Detroit
ISP
Islip
$173 Roundtrip, found 5 days ago
$173
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sun, Nov 16 from Detroit to Islip, returning Wed, Nov 19, priced at $173 found 5 days ago
Frontier Airlines
Thu, Dec 4 - Mon, Dec 15
DTW
Detroit
ISP
Islip
$180 Roundtrip, found 1 day ago
$180
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Detroit to Islip, returning Mon, Dec 15, priced at $180 found 1 day ago
Frontier Airlines
Mon, Nov 10 - Fri, Nov 14
DTW
Detroit
ISP
Islip
$186 Roundtrip, found 5 days ago
$186
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Mon, Nov 10 from Detroit to Islip, returning Fri, Nov 14, priced at $186 found 5 days ago
Frontier Airlines
Mon, Dec 8 - Thu, Dec 11
DTW
Detroit
ISP
Islip
$190 Roundtrip, found 9 hours ago
$190
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Mon, Dec 8 from Detroit to Islip, returning Thu, Dec 11, priced at $190 found 9 hours ago
Southwest Airlines
Tue, Dec 9 - Thu, Dec 11
DTW
Detroit
ISP
Islip
$207 Roundtrip, found 9 hours ago
$207
Roundtrip
found 9 hours ago
Select Southwest Airlines flight, departing Tue, Dec 9 from Detroit to Islip, returning Thu, Dec 11, priced at $207 found 9 hours ago
JetBlue Airways
Sun, Jan 25 - Tue, Feb 3
DTW
Detroit
ISP
Islip
$341 Roundtrip, found 5 days ago
$341
Roundtrip
found 5 days ago
Select JetBlue Airways flight, departing Sun, Jan 25 from Detroit to Islip, returning Tue, Feb 3, priced at $341 found 5 days ago

Alternative airports near Islip

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to MacArthur ISP. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $415
ISP
MacArthur
CheapestClosest
Average driving time to city center14 min
Flights from $415
Flights from Detroit (DTW) to Islip (ISP)
Origin airport
Detroit Metropolitan Wayne County
Destination airport
MacArthur
Airlines serving
Frontier Airlines, JetBlue Airways, Southwest Airlines
Roundtrip price
$120
Distance
539 mi
Average flight time
1 hour 38 mins

Detroit to Islip Flights

The cheapest times to fly from Detroit to Islip

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

 

The best time to book a flight from Detroit to Islip

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

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 Detroit to Islip in 2025. You can also book with separate airlines for your outbound and return journeys, from $86 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 Detroit to Islip 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 Detroit to Islip 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 Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP) cost?
Grab a cheap one-way flight from $86 or cheap return flight from $120 from Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP)?
November is the most affordable month to fly from DTW to ISP. Traveling during an off-peak travel window is often the key to scoring lower fares.
What is the cheapest airline that flies from Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP)?
Expedia's filter tool lets you easily compare different airlines, travel time and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest DTW to ISP flight.
How many flights per day from Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP)?
You'll need to catch a flight with a layover if you're traveling from Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from DTW to ISP?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the season, 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 Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP)?
To avoid possible delays on the Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP) route, aim to travel before 3 PM. Flights 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.
What airports do you fly into for Islip from Detroit Metropolitan Wayne County Airport (DTW)?
Take a direct flight from Detroit Metropolitan Wayne County Airport (DTW) to Islip and arrive at one of these airports:

  • LaGuardia Airport (LGA)
  • John F. Kennedy Intl. Airport (JFK)
  • Westchester County Airport (HPN)

Is it cheaper to buy a plane ticket from Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP) last-minute?
Last-minute fares from DTW to ISP are usually more expensive. To secure the lowest rates, start searching for flights well in advance. That being said, if you can play around with your travel dates, you may find a cheap fare right before you leave.
Is it cheaper to book a DTW to ISP flight and hotel package?
Compared with arranging flights and hotels separately, booking a DTW to ISP flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place takes the hassle out of planning your trip. Simply secure your flights and select from our extensive range of stays, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Detroit Metropolitan Wayne County Airport (DTW) to MacArthur Airport (ISP)?
Typically, it's possible to cancel or reschedule your DTW to ISP flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.