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Islip

$101+ Cheap flights from Dallas to Islip, NY (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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ISP
Apr 11 — Apr 181
Sat 4/11
Sat 4/18
1 adult, Economy
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Cheap flight deals from Dallas to Islip

Cheapest flights from Dallas to Islip
Explore the most affordable flight options available from Dallas to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 12, 2026.

This Frontier deal was found by Cheapflights users on 3/8. 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 4/308:31 pm
DFW
-
ISP
1 stop11h 42m
Frontier
Sun 5/38:31 pm
ISP
-
DFW
1 stop13h 05m
Frontier
Deal found 3/8$190
This CheapOair deal was found by Cheapflights users on 3/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/166:59 pm
DFW
-
ISP
1 stop13h 14m
Frontier
Sun 4/198:31 pm
ISP
-
DFW
1 stop13h 05m
Frontier
Deal found 3/10$210
This Expedia deal was found by Cheapflights users on 3/7. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/65:45 am
DFW
-
ISP
1 stop17h 38m
Frontier
Fri 4/105:45 am
ISP
-
DFW
1 stop7h 46m
Frontier
Deal found 3/7$220
This CheapOair deal was found by Cheapflights users on 3/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/710:00 pm
DFW
-
ISP
1 stop11h 05m
Frontier
Tue 5/125:38 pm
ISP
-
DFW
1 stop15h 12m
Frontier
Deal found 3/12$231
This CheapOair deal was found by Cheapflights users on 3/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/79:00 pm
DFW
-
ISP
1 stop11h 13m
Frontier
Sun 5/103:50 pm
ISP
-
DFW
1 stop6h 53m
Frontier
Deal found 3/9$240
This Kiwi.com deal was found by Cheapflights users on 3/9. 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 4/239:00 pm
DFW
-
ISP
1 stop11h 13m
Frontier
Mon 4/278:31 pm
ISP
-
DFW
2 stops23h 55m
Frontier
Deal found 3/9$241
This CheapOair deal was found by Cheapflights users on 3/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/228:49 pm
DFW
-
ISP
1 stop11h 19m
Frontier
Tue 5/2610:03 am
ISP
-
DFW
1 stop15h 48m
Frontier
Deal found 3/8$250
This CheapOair deal was found by Cheapflights users on 3/7. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/291:15 pm
DFW
-
ISP
1 stop19h 58m
Frontier
Sun 4/127:59 pm
ISP
-
DFW
1 stop14h 05m
Frontier
Deal found 3/7$260
This CheapOair deal was found by Cheapflights users on 3/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2112:21 pm
DFW
-
ISP
1 stop19h 47m
Frontier
Mon 5/2510:03 am
ISP
-
DFW
1 stop29h 29m
Frontier
Deal found 3/8$270

Find flight deals from Dallas to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Dallas (A78) 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 12, 2026.

Round-trip from

$190
(Frontier)

One-way from

$101
(CheapOair)

Popular in

November

Cheapest in

February

Average price

$375
From Dallas to Islip Long Island
Search Deals
One-way flight from Dallas to Islip Long Island
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($127 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dallas 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 12, 2026.
Use the filters below to find and compare flights from Dallas to Islip that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Thu 4/30

8:31 pm-9:13 am

1 stop11h 42m

Islip Long Island

Sun 5/3

8:31 pm-8:36 am

1 stop13h 05m

$190

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Tue 6/2

8:49 pm-9:08 am

1 stop11h 19m

Islip Long Island

Tue 6/9

10:03 am-12:51 am

1 stop15h 48m

$210

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Fri 6/5

8:49 pm-9:08 am

1 stop11h 19m

Islip Long Island

Tue 6/9

10:03 am-12:51 am

1 stop15h 48m

$210

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Mon 6/1

7:43 pm-5:17 pm

1 stop20h 34m

Islip Long Island

Fri 6/5

11:00 am-7:50 am

1 stop21h 50m

$231

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Sun 3/29

1:15 pm-10:13 am

1 stop19h 58m

Islip Long Island

Sun 4/12

7:59 pm-9:04 am

1 stop14h 05m

$260

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Thu 5/28

9:05 am-9:08 am

1 stop23h 03m

Islip Long Island

Sat 5/30

10:03 am-8:00 am

1 stop22h 57m

$260

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Tue 6/9

5:43 pm-9:08 am

1 stop14h 25m

Islip Long Island

Tue 6/16

10:03 am-2:32 pm

1 stop29h 29m

$261

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Wed 9/2

8:49 pm-9:08 am

1 stop11h 19m

Islip Long Island

Fri 9/4

10:03 am-8:00 am

1 stop22h 57m

$270

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Wed 4/22

5:01 am-9:33 am

2 stops27h 32m

Islip Long Island

Fri 4/24

4:07 pm-2:30 pm

1 stop23h 23m

$295

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Sun 5/31

7:43 pm-10:05 am

1 stop13h 22m

Islip Long Island

Fri 6/19

10:03 am-8:00 am

1 stop22h 57m

$301

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Dallas to Islip

Have a flexible travel schedule? Discover the best time to fly to Islip from Dallas 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 Dallas to Islip

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

Currently, November is the cheapest month in which you can book a flight from Dallas to Islip, New York (average of $67). Flying from Dallas to Islip, New York in December is currently the most expensive (average of $104). 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.

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 12, 2026.
Read reviews from past customers who have flown Southwest and Frontier from Dallas to Islip. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,319 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Southwest
8.0
Very good
4,319 reviews
Southwest
8.0
Very good
4,319 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.
Frontier
5.7
Fair
3,031 reviews
Southwest
8.0
Very good
4,319 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
6.0
Good

Scott,Feb 2026

HOU - FLL

Delayed by 45 minutes leaving Houston, making a 3.5 hour layover that much longer.

Related info for your journey

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

  • What airport do you fly into for flights to Islip from Dallas?

    Islip Long Island (ISP), located 7.2 mi from the city center, is the airport you fly into when you book flights from Dallas to Islip. 2 airlines have flights to Long Island from Dallas on a regular basis. Booking flights from Dallas to Islip Long Island should not be difficult; the airport handles an average of 0 inbound flights from Dallas per day.

  • How long is the flight from Dallas to Islip, New York?

    For as low as $190, Frontier can have you in Islip, New York from Dallas in 11h 42m. Airlines will cover a distance of 1425 mi.

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

    Our cheapest airline available from Dallas to Islip, New York is Frontier. Our recent data shows that you can find tickets from as low as $148 on this airline. An additional option worth looking into is Southwest, starting at $218. You may be able to fly from Dallas to Islip, New York for 61% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dallas 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 Dallas to Islip, New York?

    Currently, November is the cheapest month in which you can book a flight from Dallas to Islip, New York (average of $67). Flying from Dallas to Islip, New York in December is currently the most expensive (average of $104). 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?

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Alternative routes for Dallas to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Dallas to Islip

Discover the top 2 airlines that operate flights from Dallas 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 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$148Average$241FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$218Average$416FlexibilityNo cancel feeOn-time63%

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