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Islip

$82+ Cheap flights from Detroit Metropolitan Wayne County Airport to Islip (DTW - ISP)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
DTW — ISP
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Detroit to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Detroit (DTW) to Islip (ISP). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$176
(Booking.com)

One-way from

$82
(Cheapflightsfares)

Popular in

November

Cheapest in

August

Average price

$184
From Detroit Metropolitan Wayne County to Islip Long Island
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One-way flight from Detroit Metropolitan Wayne County to Islip Long Island
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Highest demand for flights based on searches. 12% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Detroit to Islip

Cheapest flights from Detroit to Islip
Explore the most affordable flight options available from Detroit to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/161:24 pmDTW - ISP
1 stop7h 18mFrontier
Thu 10/239:37 pmISP - DTW
1 stop20h 24mFrontier
Deal found 9/16$176
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/143:42 pmDTW - ISP
2 stops18h 02mFrontier
Tue 10/2110:39 amISP - DTW
2 stops14h 20mFrontier
Deal found 9/14$240
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/161:24 pmDTW - ISP
1 stop7h 18mMultiple Airlines
Thu 10/2311:40 amISP - DTW
2 stops26h 30mMultiple Airlines
Deal found 9/16$251
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:56 pmDTW - ISP
2 stops14h 08mFrontier
Sun 10/129:47 pmISP - DTW
2 stops15h 07mFrontier
Deal found 9/14$256
This Frontier deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:43 amDTW - ISP
1 stop7h 23mFrontier
Sun 12/149:09 pmISP - DTW
1 stop11h 26mFrontier
Deal found 9/14$274
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/142:53 pmDTW - ISP
1 stop20h 04mMultiple Airlines
Tue 10/219:37 pmISP - DTW
1 stop14h 11mMultiple Airlines
Deal found 9/14$282
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:50 pmDTW - ISP
1 stop17h 47mMultiple Airlines
Sun 10/129:47 pmISP - DTW
1 stop10h 51mMultiple Airlines
Deal found 9/15$333
This Frontier deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:58 pmDTW - ISP
2 stops17h 39mFrontier
Sun 10/129:47 pmISP - DTW
2 stops15h 07mFrontier
Deal found 9/15$334
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:53 pmDTW - ISP
1 stop19h 44mMultiple Airlines
Mon 10/134:58 pmISP - DTW
1 stop20h 50mMultiple Airlines
Deal found 9/15$336

Cheapflights Fare Finder

 
Customize your flight search to find flights from Detroit to Islip that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Detroit Metropolitan Wayne County Airport to Islip that are best for you.

Fly from

Detroit

Fly to

Islip

Route

Depart

Return

Price

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Tue 10/14

3:42 pm-9:44 am

2 stops18h 02m

Islip Long Island

Tue 10/21

10:39 am-12:59 am

2 stops14h 20m

$240

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 10/16

1:24 pm-8:42 pm

1 stop7h 18m

Islip Long Island

Thu 10/23

11:40 am-2:10 pm

2 stops26h 30m

$251

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 10/9

6:56 pm-9:04 am

2 stops14h 08m

Islip Long Island

Sun 10/12

9:47 pm-12:54 pm

2 stops15h 07m

$256

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 12/11

11:43 am-7:06 pm

1 stop7h 23m

Islip Long Island

Sun 12/14

9:09 pm-8:35 am

1 stop11h 26m

$274

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Tue 10/14

2:53 pm-10:57 am

1 stop20h 04m

Islip Long Island

Tue 10/21

9:37 pm-11:48 am

1 stop14h 11m

$282

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Fri 10/10

4:50 pm-10:37 am

1 stop17h 47m

Islip Long Island

Sun 10/12

9:47 pm-8:38 am

1 stop10h 51m

$333

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Fri 10/10

2:53 pm-10:37 am

1 stop19h 44m

Islip Long Island

Mon 10/13

4:58 pm-1:48 pm

1 stop20h 50m

$336

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Fri 10/10

4:50 pm-10:37 am

1 stop17h 47m

Islip Long Island

Tue 10/14

9:37 pm-10:37 pm

1 stop25h 00m

$376

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 10/16

6:56 pm-9:04 am

2 stops14h 08m

Islip Long Island

Thu 10/23

9:37 pm-12:54 pm

2 stops15h 17m

$379

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Fri 10/10

7:22 pm-8:52 pm

2 stops49h 30m

Islip Long Island

Tue 10/14

9:37 pm-4:03 pm

2 stops42h 26m

$413

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 15 results
1
2

Best time to book a flight from Detroit to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Detroit with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Detroit Metropolitan Wayne County Airport to Islip

What is the cheapest month to book a flight from Detroit Metropolitan Wayne County Airport to Islip?

Currently, January is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to Islip (average of $108). Flying from Detroit Metropolitan Wayne County Airport to Islip in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DTW to ISP?

Find hourly flight availability from Detroit to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

One of the essential ways to save on airfare from Detroit Metropolitan Wayne County Airport to Islip is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 27% on airfare.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Islip. Reviews last updated September 17, 2025.
Peruse reviews from past customers who have flown with Southwest from Detroit Metropolitan Wayne County Airport to Islip to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Detroit to Islip. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Detroit Metropolitan Wayne County Airport to Islip?

    Departing from Detroit Metropolitan Wayne County Airport to Islip will take you 18h 02m. There are 539 mi between Detroit Metropolitan Wayne County Airport and Islip.

  • What is the cheapest airline to fly from Detroit Metropolitan Wayne County Airport to Islip round-trip?

    Flying on Southwest is currently your cheapest option to Islip, with prices starting at $286.

  • Can I find deals for flights from Detroit to Islip that include hotel bookings?

    Yes. In addition to deals on Detroit to Islip flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Detroit to Islip?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Detroit to Islip.

  • Can I find deals for business class flights from Detroit to Islip?

    Yes. Cheapflights offers flight deals from Detroit to Islip by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Detroit Metropolitan Wayne County Airport to Islip?

    Currently, January is the cheapest month in which you can book a flight from Detroit Metropolitan Wayne County Airport to Islip (average of $108). Flying from Detroit Metropolitan Wayne County Airport to Islip in November is currently the most expensive (average of $213). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Islip?

Book flights to Islip if you plan to visit one of these locations
Riverhead
Southampton

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Top airline flying from Detroit to Islip

Discover the top airline that operate flights from Detroit to Islip. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$286Average$397FlexibilityNo cancel feeOn-time63%

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