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$108+ Cheap flights from Detroit to Islip, NY (DTT - 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
DTT — ISP
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 (DTT) 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$168
(Frontier)

One-way from

$108
(Cheapflightsfares)

Popular in

November

Cheapest in

April

Average price

$157
Provider with most accurate pricing for Detroit (DTT)-Islip Long Island flight deals.
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Provider most trusted by Cheapflights users for Detroit (DTT)-Islip Long Island flights.
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From Detroit (DTT) to Islip Long Island
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One-way flight from Detroit (DTT) to Islip Long Island
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Highest demand for flights based on searches. 15% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 28, 2025.

This Frontier deal was found by Cheapflights users on 3/27. 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 4/109:08 pmDTW - ISP
1 stop11h 02mFrontier
Thu 4/179:00 amISP - DTW
1 stop11h 03mFrontier
Deal found 3/27$168
This Southwest deal was found by Cheapflights users on 3/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/245:15 amDTW - ISP
1 stop4h 10mSouthwest
Mon 7/286:00 amISP - DTW
1 stop6h 05mSouthwest
Deal found 3/27$347
This Trip.com deal was found by Cheapflights users on 3/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/115:10 amDTW - ISP
1 stop15h 29mMultiple Airlines
Tue 4/1510:50 amISP - DTW
2 stops14h 27mMultiple Airlines
Deal found 3/27$479
This JetBlue deal was found by Cheapflights users on 3/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:40 pmDTW - ISP
1 stop4h 00mJetBlue
Wed 10/16:00 amISP - DTW
1 stop4h 25mJetBlue
Deal found 3/27$480

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 March 28, 2025.
Use the filters below to find and compare flights from Detroit 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

Thu 4/10

9:08 pm-8:10 am

1 stop11h 02m

Islip Long Island

Thu 4/17

9:00 am-8:03 pm

1 stop11h 03m

$168

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 7/24

5:15 am-9:25 am

1 stop4h 10m

Islip Long Island

Mon 7/28

6:00 am-12:05 pm

1 stop6h 05m

$347

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Fri 4/11

5:10 am-8:39 pm

1 stop15h 29m

Islip Long Island

Tue 4/15

10:50 am-1:17 am

2 stops14h 27m

$479

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 5/29

12:44 pm-7:26 pm

1 stop6h 42m

$108

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Fri 4/25

4:35 pm-11:05 pm

1 stop6h 30m

$184

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Sun 5/18

10:27 am-10:04 am

2 stops23h 37m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Compare providers for flights from Detroit to Islip

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Detroit to Islip in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Detroit-Islip, New York flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Detroit-Islip, New York flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Detroit-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Detroit-Islip, New York flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Detroit-Islip, New York flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 to Islip

What is the cheapest month to book a flight from Detroit to Islip, New York?

Currently, January is the cheapest month in which you can book a flight from Detroit to Islip, New York (average of $108). Flying from Detroit to Islip, New York 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 DTT 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 March 28, 2025.

It’s typically best to fly out from Detroit to Islip, New York in the morning. Doing so could potentially save you 2% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Islip by month

Plan your trip to Islip by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Islip, New York ranges from 3.3 - 4.4 inches per month. March is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Islip, New York when rainfall is around 3.3 in.

Temperature in Islip by month

Plan your trip to Islip by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Islip, New York, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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 March 28, 2025.
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Frontier
6.0
Okay
3,271 reviews
Southwest
8.1
Very good
4,273 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

  • What are the cheapest airlines flying from Detroit to Islip, New York round-trip?

    Our cheapest airline available from Detroit to Islip, New York is Frontier. Our recent data shows that you can find tickets from as low as $168 on this airline. An additional option worth looking into is Southwest, starting at $347.

  • 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 to Islip, New York?

    Currently, January is the cheapest month in which you can book a flight from Detroit to Islip, New York (average of $108). Flying from Detroit to Islip, New York 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 Detroit?

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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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$336Average$397FlexibilityNo cancel feeOn-time63%
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