What is the cheapest airline that flies from Detroit to Islip Long Island?

Frontier and Southwest are the most popular carriers operating from Detroit to Islip Long Island

What airlines fly to Islip?

Spirit Airlines, Delta and American Airlines are the top three most popular airlines that fly to Islip from Detroit according to our data. Spirit Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Islip. Keep in mind that there are 6 different airlines that fly to Islip on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Detroit to Islip Long Island Airport?

Prices for flights from Detroit to Islip Long Island Airport are updated daily.

How many operators does momondo search for flights from Detroit to Islip Long Island Airport?

As of August 2025, there is 1 operator available to choose from for flights from Detroit to Islip Long Island Airport.

How old do you have to be to fly from Detroit to Islip Long Island Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Detroit to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$151 Cheap Flights from Detroit to Islip (DTT-ISP) in 2025

1 adult

0 bags

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Find the cheapest flights from Detroit to New York (DTT-ISP)

Round-trip

One-way

Last minute

Cheap round-trip flights

9:12 am - 10:40 amDTW-ISP

25h 28m2 stops

5:05 pm - 8:40 amISP-DTW

15h 35m1 stop

$246

Find Deal

Sat, Sep 13 - Mon, Sep 15

7:35 pm - 10:40 amDTW-ISP

15h 05m1 stop

5:05 pm - 8:40 amISP-DTW

15h 35m1 stop

$266

Find Deal

Sat, Sep 13 - Mon, Sep 15

11:43 am - 7:06 pmDTW-ISP

7h 23m1 stop

10:06 am - 5:23 pmISP-DTW

7h 17m1 stop

$274Frontier

Find Deal

Thu, Dec 4 - Mon, Dec 8

1:24 pm - 8:42 pmDTW-ISP

7h 18m1 stop

9:47 pm - 4:03 pmISP-DTW

18h 16m2 stops

$379Frontier

Find Deal

Thu, Oct 9 - Sun, Oct 12

6:56 pm - 9:04 amDTW-ISP

14h 08m2 stops

9:47 pm - 4:03 pmISP-DTW

18h 16m2 stops

$389Frontier

Find Deal

Thu, Oct 9 - Sun, Oct 12

6:00 am - 3:21 pmDTW-ISP

9h 21m2 stops

2:19 pm - 10:56 pmISP-DTW

8h 37m2 stops

$715

Find Deal

Sat, Sep 13 - Mon, Sep 15

Frontier flights from Detroit to Islip

Our best Frontier deals on Detroit to Islip flight tickets

Frontier

Sep 4

DTW1:36 pmDetroit Metropolitan Wayne County

21h 04m

1 stop

ISP10:40 amIslip Long Island

Sep 7

ISP11:35 amIslip Long Island

21h 09m

1 stop

DTW8:44 amDetroit Metropolitan Wayne County

$171

Find similar

Frontier

Sep 4

DTW3:42 pmDetroit Metropolitan Wayne County

18h 58m

2 stops

ISP10:40 amIslip Long Island

Sep 7

ISP11:35 amIslip Long Island

21h 09m

1 stop

DTW8:44 amDetroit Metropolitan Wayne County

$233

Find similar

Frontier

Dec 4

DTW11:43 amDetroit Metropolitan Wayne County

7h 23m

1 stop

ISP7:06 pmIslip Long Island

Dec 8

ISP10:06 amIslip Long Island

7h 17m

1 stop

DTW5:23 pmDetroit Metropolitan Wayne County

$274

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Sat 9/13

9:12 am-10:40 am

2 stops25h 28m

Islip Long Island

Mon 9/15

5:05 pm-8:40 am

1 stop15h 35m

$246

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Sat 9/13

7:35 pm-10:40 am

1 stop15h 05m

Islip Long Island

Mon 9/15

5:05 pm-8:40 am

1 stop15h 35m

$266

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 12/4

11:43 am-7:06 pm

1 stop7h 23m

Islip Long Island

Mon 12/8

10:06 am-5:23 pm

1 stop7h 17m

$274

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 10/9

1:24 pm-8:42 pm

1 stop7h 18m

Islip Long Island

Sun 10/12

9:47 pm-4:03 pm

2 stops18h 16m

$379

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-4:03 pm

2 stops18h 16m

$389

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Sat 9/13

6:00 am-3:21 pm

2 stops9h 21m

Islip Long Island

Mon 9/15

2:19 pm-10:56 pm

2 stops8h 37m

$715

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Thu 10/9

1:24 pm-8:42 pm

1 stop7h 18m

$151

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Sun 10/19

1:29 pm-8:52 pm

1 stop7h 23m

$152

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Wed 9/17

5:50 am-11:55 am

1 stop6h 05m

$184

DetroitIslip

DTW - ISP

DTWISP

Detroit Metropolitan Wayne County

Wed 9/17

6:15 am-3:10 pm

2 stops8h 55m

$199

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first

How to get the cheapest flight ticket from Detroit to Islip

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Islip?

On average, the least expensive day to fly to Islip from Detroit is on a Friday. momondo users have found tickets for Friday departures for as low as $367. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from Detroit to Islip on a Thursday will generally be more expensive and average around $416. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Islip?

Flying to Islip from Detroit in the morning is the least expensive time of day to depart. momondo users have found prices as low as $356 when looking at flights departing in the morning. Flights in the evening are often more expensive with an average ticket price of $361.

When to book flights from Detroit to Islip

Are you open to changing your travel dates? Check out the ideal times to fly from Detroit to Islip according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Detroit to Islip (DTT to ISP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Detroit to Islip

Direct flights	None

There are no direct flights from Detroit to Islip. There are no popular flight routes from Detroit to Islip.

Search flight deals

How far is Detroit to Islip Long Island by plane?
The straight-line distance from Detroit to Islip Long Island is 520.3 mi. By plane, this route typically takes 7h 18m.
When did momondo last update prices for flights from Detroit to Islip Long Island Airport?
Prices for flights from Detroit to Islip Long Island Airport are updated daily.
How many operators does momondo search for flights from Detroit to Islip Long Island Airport?
As of August 2025, there is 1 operator available to choose from for flights from Detroit to Islip Long Island Airport.
How old do you have to be to fly from Detroit to Islip Long Island Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Detroit to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The travel and health documents you'll need for your trip to Islip Long Island Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Islip Long Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Detroit to Islip

Compare and see reviews for airlines that fly from Detroit to Islip with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $286	Free Cancellation	Rating 8.0 4,242 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Detroit to Islip?

Finding the right flight to Islip from Detroit is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Islip quick and easy, saving you time and money.

Can I find flights from Detroit to Islip with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Islip from Detroit with this policy.

How can momondo help me find flights from Detroit to Islip?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Islip from Detroit.

I’m not ready to book a flight from Detroit to Islip right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Detroit to Islip flights. All you need is a valid email address and we will do the rest; it is that quick and easy.