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$153+ Cheap flights from Islip (ISP) to Dallas

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — DFW
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Islip to Dallas

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

$153
(CheapOair)

Popular in

April

Cheapest in

February

Average price

$317
From Islip Long Island to Dallas
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One-way flight from Islip Long Island to Dallas
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Highest demand for flights based on searches. 25% potential increase in price ($131 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($36 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 Islip to Dallas

Cheapest flights from Islip to Dallas
Explore the most affordable flight options available from Islip to Dallas. 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 10/35:05 pmISP - DFW
1 stop18h 29mFrontier
Sun 10/58:18 pmDFW - ISP
1 stop13h 22mFrontier
Deal found 9/15$153
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/29:27 pmISP - DFW
1 stop11h 30mFrontier
Thu 11/139:10 pmDFW - ISP
1 stop12h 27mFrontier
Deal found 9/16$163
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:54 amISP - DFW
1 stop10h 47mFrontier
Fri 11/78:41 pmDFW - ISP
1 stop13h 14mFrontier
Deal found 9/16$168
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:05 pmISP - DFW
1 stop27h 08mFrontier
Sun 10/58:18 pmDFW - ISP
1 stop13h 22mFrontier
Deal found 9/14$184
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/511:25 amISP - DFW
1 stop21h 24mFrontier
Thu 10/98:11 pmDFW - ISP
1 stop11h 53mFrontier
Deal found 9/16$188
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/45:18 pmISP - DFW
1 stop22h 30mFrontier
Sun 10/58:18 pmDFW - ISP
1 stop13h 22mFrontier
Deal found 9/14$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.
Sat 10/114:58 pmISP - DFW
1 stop17h 52mFrontier
Mon 10/137:46 pmDFW - ISP
1 stop23h 56mFrontier
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.
Fri 10/244:58 pmISP - DFW
1 stop22h 00mFrontier
Wed 10/298:59 pmDFW - ISP
1 stop19h 43mFrontier
Deal found 9/15$196
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:05 pmISP - DFW
1 stop27h 08mFrontier
Mon 9/298:18 pmDFW - ISP
1 stop13h 22mFrontier
Deal found 9/16$199
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.
Thu 10/306:37 pmISP - DFW
2 stops17h 13mFrontier
Sun 11/29:10 pmDFW - ISP
1 stop12h 27mFrontier
Deal found 9/15$200
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.
Fri 9/265:05 pmISP - DFW
1 stop27h 08mFrontier
Sun 9/288:18 pmDFW - ISP
1 stop13h 22mFrontier
Deal found 9/17$215

Cheapflights Fare Finder

 
Customize your flight search to find flights from Islip to Dallas 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 Islip to Dallas that are best for you.

Fly from

Islip

Fly to

Dallas

Route

Depart

Return

Price

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Thu 10/2

11:40 am-7:13 pm

1 stop8h 33m

Dallas/Fort Worth

Sun 10/5

8:18 pm-10:40 am

1 stop13h 22m

$153

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Wed 10/1

11:35 am-10:04 am

1 stop23h 29m

Dallas/Fort Worth

Mon 10/6

8:18 pm-8:42 pm

1 stop23h 24m

$153

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Wed 10/29

4:58 pm-8:15 am

1 stop16h 17m

Dallas/Fort Worth

Wed 11/5

8:59 pm-5:42 pm

1 stop19h 43m

$153

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Wed 10/1

11:35 am-10:04 am

1 stop23h 29m

Dallas/Fort Worth

Thu 10/23

7:06 pm-10:37 am

1 stop14h 31m

$153

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Tue 10/7

9:37 pm-10:11 am

1 stop13h 34m

Dallas/Fort Worth

Wed 11/12

8:59 pm-5:42 pm

1 stop19h 43m

$153

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Sun 11/2

9:27 pm-7:57 am

1 stop11h 30m

Dallas/Fort Worth

Thu 11/13

9:10 pm-10:37 am

1 stop12h 27m

$163

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Fri 10/31

9:54 am-7:41 pm

1 stop10h 47m

Dallas/Fort Worth

Fri 11/7

8:41 pm-10:55 am

1 stop13h 14m

$168

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Sat 10/4

5:18 pm-2:48 pm

1 stop22h 30m

Dallas/Fort Worth

Sun 10/5

8:18 pm-10:40 am

1 stop13h 22m

$193

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Tue 10/14

9:37 pm-10:11 am

1 stop13h 34m

Dallas/Fort Worth

Tue 10/21

11:21 am-8:42 pm

1 stop8h 21m

$194

IslipDallas

ISP - DFW

ISPDFW

Islip Long Island

Fri 10/24

4:58 pm-1:58 pm

1 stop22h 00m

Dallas/Fort Worth

Wed 10/29

8:59 pm-5:42 pm

1 stop19h 43m

$196

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 20 results
1
2

Best time to book a flight from Islip to Dallas

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

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

Currently, August is the cheapest month in which you can book a flight from Islip to Dallas (average of $216). Flying from Islip to Dallas in March is currently the most expensive (average of $295). 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 ISP to DFW?

Find hourly flight availability from Islip to Dallas. 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.

A simple way to save on the total cost of your ticket is to fly from Islip to Dallas in the afternoon. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight at noon.

How much does it cost to fly round-trip from Islip to Dallas?

Reviews of airlines servicing Dallas

Get insights into the airlines that provide service to Dallas. 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 Dallas. Reviews last updated September 17, 2025.
Read through reviews of airlines operating flights from Islip to Dallas, such as Southwest. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

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 Islip to Dallas. 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 from for flights from Islip to Dallas?

    Islip Long Island (ISP) is the airport you will fly out of if you book a flight from Islip to Dallas. You should not have trouble finding flights to Dallas from Long Island; the airport handles an average of 0 outbound flights to Dallas per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Islip airport to Dallas. It is only a 7.2 mi journey to Long Island (ISP) from Islip’s city center.

  • How long is the flight from Islip to Dallas?

    A quick flight from Islip to Dallas can take about 8h 33m. Frontier provides one of the quickest options available for as low as $153. Islip and Dallas are separated by a distance of 1425 mi.

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

    Our cheapest airline available from Islip to Dallas is Southwest. Our recent data shows that you can find tickets from as low as $268 on this airline. Southwest is 30% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Islip to Dallas 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 Islip to Dallas?

    Currently, August is the cheapest month in which you can book a flight from Islip to Dallas (average of $216). Flying from Islip to Dallas in March is currently the most expensive (average of $295). 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

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Alternative routes for Islip to Dallas

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

Discover the top airline that operate flights from Islip to Dallas. 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$268Average$406FlexibilityNo cancel feeOn-time63%

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