$120 Cheap Flights from Islip (ISP) to Detroit (DTW)

View $120 flight on Wed, Dec 10, 2025Opens in a new window

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

Cheap Flights from Islip to Detroit (ISP-DTW)

Prices were available within the past 7 days and start at $120 for one-way flights and $174 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Oct 23 - Mon, Nov 3
ISP
Islip
DTW
Detroit
$174 Roundtrip, found 8 hours ago
$174
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Islip to Detroit, returning Mon, Nov 3, priced at $174 found 8 hours ago
Frontier Airlines
Fri, Oct 24 - Thu, Nov 13
ISP
Islip
DTW
Detroit
$189 Roundtrip, found 8 hours ago
$189
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Islip to Detroit, returning Thu, Nov 13, priced at $189 found 8 hours ago
Frontier Airlines
Sun, Nov 2 - Mon, Nov 17
ISP
Islip
DTW
Detroit
$204 Roundtrip, found 2 days ago
$204
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Nov 2 from Islip to Detroit, returning Mon, Nov 17, priced at $204 found 2 days ago
Frontier Airlines
Fri, Oct 17 - Mon, Nov 3
ISP
Islip
DTW
Detroit
$212 Roundtrip, found 8 hours ago
$212
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Fri, Oct 17 from Islip to Detroit, returning Mon, Nov 3, priced at $212 found 8 hours ago
Frontier Airlines
Sun, Oct 26 - Sun, Nov 9
ISP
Islip
DTW
Detroit
$227 Roundtrip, found 5 days ago
$227
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sun, Oct 26 from Islip to Detroit, returning Sun, Nov 9, priced at $227 found 5 days ago
Frontier Airlines
Thu, Oct 23 - Sun, Nov 2
ISP
Islip
DTW
Detroit
$228 Roundtrip, found 8 hours ago
$228
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Islip to Detroit, returning Sun, Nov 2, priced at $228 found 8 hours ago
Southwest Airlines
Sat, Oct 25 - Sun, Oct 26
ISP
Islip
DTW
Detroit
$239 Roundtrip, found 3 days ago
$239
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Sat, Oct 25 from Islip to Detroit, returning Sun, Oct 26, priced at $239 found 3 days ago
Frontier Airlines
Sun, Nov 2 - Mon, Nov 17
ISP
Islip
DTW
Detroit
$243 Roundtrip, found 8 hours ago
$243
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Sun, Nov 2 from Islip to Detroit, returning Mon, Nov 17, priced at $243 found 8 hours ago
Frontier Airlines
Thu, Oct 23 - Fri, Nov 7
ISP
Islip
DTW
Detroit
$244 Roundtrip, found 8 hours ago
$244
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Islip to Detroit, returning Fri, Nov 7, priced at $244 found 8 hours ago
JetBlue Airways
Tue, Nov 4 - Thu, Nov 20
ISP
Islip
DTW
Detroit
$374 Roundtrip, found 8 hours ago
$374
Roundtrip
found 8 hours ago
Select JetBlue Airways flight, departing Tue, Nov 4 from Islip to Detroit, returning Thu, Nov 20, priced at $374 found 8 hours ago

Alternative airports near Detroit

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

Select flight to Detroit Metropolitan Wayne County DTW. Cheapest option available. Average driving time to city center is 26 minutes. Flights from $273
DTW
Detroit Metropolitan Wayne County
Cheapest
Average driving time to city center26 min
Flights from $273
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
$174
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 October. 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 $120 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?
Snag a cheap one-way flight from $120 or cheap return flight from $174 from MacArthur Airport (ISP) to Detroit Metropolitan Wayne County Airport (DTW) 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 MacArthur Airport (ISP) to Detroit Metropolitan Wayne County Airport (DTW)?
October is the cheapest month to fly from ISP to DTW. Planning your trip for the off-season is often the key to finding better deals on flights.
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 MacArthur Airport (ISP) to Detroit Metropolitan Wayne County Airport (DTW)?
To find the cheapest airline that'll fly you from ISP to DTW, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
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.