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Islip

$137+ Cheap flights from Dallas to Islip (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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
DFW — ISP
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$153
(CheapOair)

One-way from

$137
(Kiwi.com)

Popular in

November

Cheapest in

April

Average price

$325
From Dallas to Islip Long Island
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One-way flight from Dallas to Islip Long Island
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Highest demand for flights based on searches. 16% potential increase in price ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($30 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 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 September 17, 2025.

This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/247:46 pmDFW - ISP
1 stop13h 51mFrontier
Tue 10/286:27 pmISP - DFW
1 stop17h 47mFrontier
Deal found 9/15$153
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/148:41 pmDFW - ISP
1 stop13h 14mFrontier
Sun 11/169:27 pmISP - DFW
1 stop11h 25mFrontier
Deal found 9/15$155
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/288:18 pmDFW - ISP
1 stop13h 22mFrontier
Sun 10/511:25 amISP - DFW
1 stop21h 24mFrontier
Deal found 9/15$168
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.
Fri 10/247:46 pmDFW - ISP
1 stop13h 51mFrontier
Sun 10/269:47 pmISP - DFW
1 stop12h 38mFrontier
Deal found 9/16$174
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:18 pmDFW - ISP
1 stop13h 22mFrontier
Mon 9/295:05 pmISP - DFW
1 stop17h 59mFrontier
Deal found 9/15$184
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/137:46 pmDFW - ISP
1 stop23h 56mFrontier
Mon 10/204:58 pmISP - DFW
1 stop18h 13mFrontier
Deal found 9/15$186
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:00 amDFW - ISP
1 stop24h 04mFrontier
Mon 9/295:05 pmISP - DFW
1 stop17h 59mFrontier
Deal found 9/15$187
This CheapOair deal was found by Cheapflights users on 9/17. 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 10/98:11 pmDFW - ISP
1 stop11h 53mFrontier
Sat 10/114:58 pmISP - DFW
1 stop17h 52mFrontier
Deal found 9/17$188
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/237:06 pmDFW - ISP
1 stop14h 31mFrontier
Sat 10/254:58 pmISP - DFW
1 stop17h 42mFrontier
Deal found 9/15$191
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:18 pmDFW - ISP
1 stop13h 22mFrontier
Sat 10/45:18 pmISP - DFW
1 stop22h 30mFrontier
Deal found 9/15$193
This CheapOair deal was found by Cheapflights users on 9/17. 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.
Wed 10/111:00 amDFW - ISP
1 stop22h 55mFrontier
Fri 10/35:05 pmISP - DFW
1 stop27h 08mFrontier
Deal found 9/17$194
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/183:06 pmDFW - ISP
1 stop28h 46mFrontier
Tue 10/219:37 pmISP - DFW
1 stop13h 34mFrontier
Deal found 9/15$196

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 September 17, 2025.
Use the filters below to find and compare flights from Dallas to Islip that are best for you.

Fly from

Dallas

Fly to

Islip

Route

Depart

Return

Price

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Fri 10/17

7:46 pm-10:37 am

1 stop13h 51m

Islip Long Island

Thu 10/23

9:37 pm-11:27 am

1 stop14h 50m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Thu 10/30

9:10 pm-10:37 am

1 stop12h 27m

Islip Long Island

Sun 11/2

9:27 pm-7:57 am

1 stop11h 30m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Wed 11/5

8:59 pm-5:42 pm

1 stop19h 43m

Islip Long Island

Sat 11/8

4:58 pm-11:01 am

1 stop19h 03m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Fri 10/31

2:50 pm-10:37 am

1 stop18h 47m

Islip Long Island

Tue 11/18

6:27 pm-11:14 am

1 stop17h 47m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Tue 10/28

8:59 pm-10:37 am

1 stop12h 38m

Islip Long Island

Fri 10/31

4:58 pm-11:14 am

1 stop19h 16m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Thu 10/30

6:30 pm-10:37 am

1 stop15h 07m

Islip Long Island

Mon 11/17

4:58 pm-11:14 am

1 stop19h 16m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Fri 10/31

2:50 pm-10:37 am

1 stop18h 47m

Islip Long Island

Sun 11/2

9:27 pm-7:57 am

1 stop11h 30m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Mon 10/20

7:46 pm-8:42 pm

1 stop23h 56m

Islip Long Island

Thu 10/23

9:37 pm-11:27 am

1 stop14h 50m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Wed 10/29

8:59 pm-5:42 pm

1 stop19h 43m

Islip Long Island

Sun 11/2

9:27 pm-7:57 am

1 stop11h 30m

$153

DallasIslip

DFW - ISP

DFWISP

Dallas/Fort Worth

Fri 10/17

7:46 pm-10:37 am

1 stop13h 51m

Islip Long Island

Mon 10/20

4:58 pm-10:11 am

1 stop18h 13m

$153

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 19 results
1
2

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?

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

Find hourly flight availability from Dallas 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.

When flying from Dallas to Islip, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 6% versus a flight in the morning.

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.
Read reviews from past customers who have flown Southwest 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
4,242 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Comfort

8.0

Crew

8.6

Food

7.0

Boarding

8.1

Entertainment

7.5

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 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. 1 airline 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?

    For as low as $153, Frontier can have you in Islip from Dallas in 13h 51m. Dallas and Islip are separated by a distance of 1425 mi.

  • What is the cheapest airline to fly from Dallas to Islip round-trip?

    Currently priced at $275, Southwest will fly you from Dallas to Islip and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. This flight start at 33% lower than the current average price 3 months from now.

  • 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?

    Currently, January is the cheapest month in which you can book a flight from Dallas to Islip (average of $108). Flying from Dallas 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
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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 airline flying from Dallas to Islip

Discover the top airline 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$275Average$432FlexibilityNo cancel feeOn-time63%

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