$100 Cheap Flights from Islip (ISP) to Dallas (DFW)

View $100 flight on Tue, May 13, 2025Opens in a new window
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Cheap Flights from Islip to Dallas (ISP-DFW)

Prices were available within the past 7 days and start at $100 for one-way flights and $188 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, May 6 - Sat, May 10
ISP
Islip
DFW
Dallas
$188 Roundtrip, found 1 day ago
$188
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, May 6 from Islip to Dallas, returning Sat, May 10, priced at $188 found 1 day ago
Frontier Airlines
Sun, May 4 - Wed, May 7
ISP
Islip
DFW
Dallas
$198 Roundtrip, found 12 hours ago
$198
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sun, May 4 from Islip to Dallas, returning Wed, May 7, priced at $198 found 12 hours ago
Frontier Airlines
Sun, May 4 - Thu, May 8
ISP
Islip
DFW
Dallas
$208 Roundtrip, found 12 hours ago
$208
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sun, May 4 from Islip to Dallas, returning Thu, May 8, priced at $208 found 12 hours ago
Frontier Airlines
Sat, May 24 - Thu, May 29
ISP
Islip
DFW
Dallas
$218 Roundtrip, found 2 hours ago
$218
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, May 24 from Islip to Dallas, returning Thu, May 29, priced at $218 found 2 hours ago
Frontier Airlines
Sat, May 24 - Wed, May 28
ISP
Islip
DFW
Dallas
$228 Roundtrip, found 2 hours ago
$228
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, May 24 from Islip to Dallas, returning Wed, May 28, priced at $228 found 2 hours ago
Frontier Airlines
Thu, May 22 - Wed, May 28
ISP
Islip
DFW
Dallas
$238 Roundtrip, found 2 hours ago
$238
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, May 22 from Islip to Dallas, returning Wed, May 28, priced at $238 found 2 hours ago
Frontier Airlines
Thu, May 22 - Sun, Jun 1
ISP
Islip
DFW
Dallas
$248 Roundtrip, found 2 hours ago
$248
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Thu, May 22 from Islip to Dallas, returning Sun, Jun 1, priced at $248 found 2 hours ago
Frontier Airlines
Sun, May 25 - Wed, May 28
ISP
Islip
DFW
Dallas
$258 Roundtrip, found 2 hours ago
$258
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sun, May 25 from Islip to Dallas, returning Wed, May 28, priced at $258 found 2 hours ago
Southwest Airlines
Tue, Jun 10 - Wed, Jun 11
ISP
Islip
DAL
Dallas
$299 Roundtrip, found 5 days ago
$299
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Tue, Jun 10 from Islip to Dallas, returning Wed, Jun 11, priced at $299 found 5 days ago
JetBlue Airways
Sat, May 31 - Sat, Jun 7
ISP
Islip
DFW
Dallas
$304 Roundtrip, found 2 days ago
$304
Roundtrip
found 2 days ago
Select JetBlue Airways flight, departing Sat, May 31 from Islip to Dallas, returning Sat, Jun 7, priced at $304 found 2 days ago
Flights from Islip (ISP) to Dallas (DFW)
Origin airport
MacArthur
Destination airport
Dallas-Fort Worth Intl.
Airlines serving
Frontier Airlines, JetBlue Airways
Roundtrip price
$188
Distance
1425 mi

Islip to Dallas Flights

The cheapest times to fly from Islip to Dallas

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Islip to Dallas are during the month of May. You can find some of the cheapest flights from Islip to Dallas with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Islip to Dallas

Sunday is one of the best days to book for cheap flights from Islip to Dallas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Islip to Dallas

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Islip to Dallas in 2025. You can also book with separate airlines for your outbound and return journeys, from $100 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Islip to Dallas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Islip to Dallas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from MacArthur Airport (ISP) to Dallas-Fort Worth Intl. Airport (DFW) cost?
Discover the latest flight deals from ISP to DFW by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ISP to DFW?
The cheapest flights from ISP to DFW are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from MacArthur Airport (ISP) to Dallas-Fort Worth Intl. Airport (DFW)?
While Islip, NY (ISP-MacArthur) doesn’t have any direct flights to Dallas-Fort Worth Intl. Airport (DFW), other airports have nonstop options. Jetting off from John F. Kennedy Intl. Airport (JFK) will get you to Dallas without any detours.
What is the cheapest airline that flies from ISP to DFW?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from ISP to DFW. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from MacArthur Airport (ISP) to Dallas-Fort Worth Intl. Airport (DFW)?
Nonstop flights from MacArthur Airport (ISP) to Dallas-Fort Worth Intl. Airport (DFW) aren’t available daily, so you’ll need to take a flight with a layover. Explore your options with Expedia’s filters. Enter your travel details and click on either “1 Stop” or “2+ Stops.”
What day of the week has the most flights from ISP to DFW?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change depending on various factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MacArthur Airport (ISP) to Dallas-Fort Worth Intl. Airport (DFW)?
To avoid possible delays on the MacArthur Airport (ISP) to Dallas-Fort Worth Intl. Airport (DFW) route, aim to fly before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
Is it cheaper to buy a plane ticket from MacArthur Airport (ISP) to Dallas-Fort Worth Intl. Airport (DFW) last-minute?
Last-minute fares from ISP to DFW are usually more expensive. To lock in the lowest prices, start looking for flights early. That said, if you’re flexible with your travel plans, you may land a cheap ticket just before your departure.
Is it cheaper to book an ISP to DFW flight and hotel package?
You’ll generally save money by securing an ISP to DFW flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one place. After selecting your preferred accommodations and flights, consider adding extras including activities, tours and car rentals.
Can I cancel or change the date of my flight from MacArthur Airport (ISP) to Dallas-Fort Worth Intl. Airport (DFW)?
It’s generally possible to cancel or reschedule your ISP to DFW flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more details on our Customer Service portal.

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*Available to One Key members.