$103 Cheap Flights from Islip (ISP) to Detroit (DTW)

View $103 flight on Wed, Jul 23, 2025Opens in a new window

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

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Cheap Flights from Islip to Detroit (ISP-DTW)

Prices were available within the past 7 days and start at $103 for one-way flights and $222 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Fri, Aug 1 - Sat, Aug 2
ISP
Islip
DTW
Detroit
$222 Roundtrip, found 5 days ago
$222
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Islip to Detroit, returning Sat, Aug 2, priced at $222 found 5 days ago
Frontier Airlines
Fri, Aug 1 - Wed, Aug 6
ISP
Islip
DTW
Detroit
$226 Roundtrip, found 5 days ago
$226
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Islip to Detroit, returning Wed, Aug 6, priced at $226 found 5 days ago
Frontier Airlines
Fri, Aug 1 - Thu, Aug 7
ISP
Islip
DTW
Detroit
$233 Roundtrip, found 5 days ago
$233
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Islip to Detroit, returning Thu, Aug 7, priced at $233 found 5 days ago
Frontier Airlines
Fri, Aug 1 - Tue, Aug 5
ISP
Islip
DTW
Detroit
$234 Roundtrip, found 5 days ago
$234
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Islip to Detroit, returning Tue, Aug 5, priced at $234 found 5 days ago
Frontier Airlines
Fri, Aug 1 - Thu, Aug 7
ISP
Islip
DTW
Detroit
$241 Roundtrip, found 5 days ago
$241
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Fri, Aug 1 from Islip to Detroit, returning Thu, Aug 7, priced at $241 found 5 days ago
Frontier Airlines
Tue, Jul 29 - Sat, Aug 2
ISP
Islip
DTW
Detroit
$242 Roundtrip, found 5 days ago
$242
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Jul 29 from Islip to Detroit, returning Sat, Aug 2, priced at $242 found 5 days ago
Frontier Airlines
Tue, Jul 29 - Wed, Aug 6
ISP
Islip
DTW
Detroit
$246 Roundtrip, found 5 days ago
$246
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, Jul 29 from Islip to Detroit, returning Wed, Aug 6, priced at $246 found 5 days ago
Frontier Airlines
Fri, Jul 25 - Thu, Jul 31
ISP
Islip
DTW
Detroit
$247 Roundtrip, found 6 days ago
$247
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, Jul 25 from Islip to Detroit, returning Thu, Jul 31, priced at $247 found 6 days ago
Southwest Airlines
Tue, Aug 26 - Sat, Aug 30
ISP
Islip
DTW
Detroit
$252 Roundtrip, found 4 hours ago
$252
Roundtrip
found 4 hours ago
Select Southwest Airlines flight, departing Tue, Aug 26 from Islip to Detroit, returning Sat, Aug 30, priced at $252 found 4 hours ago
JetBlue Airways
Tue, Sep 16 - Thu, Oct 2
ISP
Islip
DTW
Detroit
$392 Roundtrip, found 4 hours ago
$392
Roundtrip
found 4 hours ago
Select JetBlue Airways flight, departing Tue, Sep 16 from Islip to Detroit, returning Thu, Oct 2, priced at $392 found 4 hours ago
Flights from Islip (ISP) to Detroit (DTW)
Origin airport
MacArthur
Destination airport
Detroit Metropolitan Wayne County
Airlines serving
Frontier Airlines, JetBlue Airways, Southwest Airlines
Roundtrip price
$222
Distance
539 mi

Islip to Detroit Flights

The cheapest times to fly from Islip to Detroit

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

 

The best time to book a flight from Islip to Detroit

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

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 Detroit in 2025. You can also book with separate airlines for your outbound and return journeys, from $103 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 Detroit 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 Detroit 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 Detroit Metropolitan Wayne County Airport (DTW) cost?
Discover the latest flight deals from ISP to DTW 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 DTW?
The cheapest flights from ISP to DTW are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from MacArthur Airport (ISP) to Detroit Metropolitan Wayne County Airport (DTW)?
There are no direct routes from Islip, NY (ISP-MacArthur) to Detroit Metropolitan Wayne County Airport (DTW). However, there are other airports that offer nonstop flights. Hop on your plane at John F. Kennedy Intl. Airport (JFK) and travel straight to Detroit without layovers.
What is the cheapest airline that flies from ISP to DTW?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ISP to DTW. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from MacArthur Airport (ISP) to Detroit Metropolitan Wayne County Airport (DTW)?
Direct flights from MacArthur Airport (ISP) to Detroit Metropolitan Wayne County Airport (DTW) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ISP to DTW?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*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 Detroit Metropolitan Wayne County Airport (DTW)?
Book a flight from MacArthur Airport (ISP) to Detroit Metropolitan Wayne County Airport (DTW) that leaves before 3 PM to reduce the likelihood of delays. Later departures are on average 22% more likely to be 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 Detroit Metropolitan Wayne County Airport (DTW) last-minute?
Last-minute bookings from ISP to DTW are usually more expensive. For the cheapest rates, start searching for flights early. That said, if your travel plans are flexible, it's possible to score a cheap ticket right before your journey.
Is it cheaper to book an ISP to DTW flight and hotel package?
You can save money by securing an ISP to DTW flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've selected your preferred accommodations and flights, consider adding extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Detroit Metropolitan Wayne County Airport (DTW)?
Generally, it's possible to reschedule or cancel your ISP to DTW flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.