$143 Cheap Frontier Airlines flights Dallas (DFW) to Islip (ISP)

View $143 flight on Tue, Jul 15, 2025Opens in a new window

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$143 Cheap Frontier Airlines flights Dallas (DFW) to Islip (ISP)

Prices were available within the past 7 days and start at $143 for one-way flights and $258 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, Jul 1 - Sat, Jul 12
DFW
Dallas
ISP
Islip
$258 Roundtrip, found 6 days ago
$258
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Tue, Jul 1 from Dallas to Islip, returning Sat, Jul 12, priced at $258 found 6 days ago
Frontier Airlines
Mon, Jun 30 - Sat, Jul 12
DFW
Dallas
ISP
Islip
$263 Roundtrip, found 6 days ago
$263
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Mon, Jun 30 from Dallas to Islip, returning Sat, Jul 12, priced at $263 found 6 days ago
Frontier Airlines
Fri, Jul 4 - Sat, Jul 12
DFW
Dallas
ISP
Islip
$268 Roundtrip, found 6 days ago
$268
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, Jul 4 from Dallas to Islip, returning Sat, Jul 12, priced at $268 found 6 days ago
Frontier Airlines
Fri, Jul 11 - Wed, Jul 16
DFW
Dallas
ISP
Islip
$286 Roundtrip, found 9 hours ago
$286
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, Jul 11 from Dallas to Islip, returning Wed, Jul 16, priced at $286 found 9 hours ago
Frontier Airlines
Fri, Jul 11 - Wed, Jul 23
DFW
Dallas
ISP
Islip
$296 Roundtrip, found 9 hours ago
$296
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Fri, Jul 11 from Dallas to Islip, returning Wed, Jul 23, priced at $296 found 9 hours ago
Frontier Airlines
Thu, Jul 10 - Wed, Jul 16
DFW
Dallas
ISP
Islip
$301 Roundtrip, found 9 hours ago
$301
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Thu, Jul 10 from Dallas to Islip, returning Wed, Jul 16, priced at $301 found 9 hours ago
Flights from Dallas (DAL) to Islip (ISP)
Origin airport
Love Field
Destination airport
MacArthur
Airlines serving
Frontier Airlines, JetBlue Airways
Popular airline
Frontier Airlines
Distance
1418 mi

Frequently asked questions

How much is a Frontier Airlines flight from Dallas-Fort Worth Intl. Airport (DFW) to MacArthur Airport (ISP)?
Finding cheap one-way Frontier Airlines flights from DFW to ISP from $143 on Expedia couldn't be simpler --- just filter by "Price (lowest to highest)." Alternatively, check out our affordable return fares from $258 for your next exciting adventure.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from DFW to ISP with Frontier Airlines?
January is one of the cheapest months to fly to Islip with Frontier Airlines. You could also find great deals on return and one-way tickets in February.
What is the cheapest time to book flights from Dallas-Fort Worth Intl. Airport (DFW) to MacArthur Airport (ISP) with Frontier Airlines?
Look for affordable Frontier Airlines flights from Dallas-Fort Worth Intl. Airport (DFW) to MacArthur Airport (ISP) one to three months before your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and itinerary, the best day to book a domestic flight is generally Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Frontier Airlines fly nonstop from Dallas-Fort Worth Intl. Airport (DFW) to MacArthur Airport (ISP)?
Select our "Nonstop" filter when searching for direct Frontier Airlines flights from DFW to ISP. It's also a good way to compare other airlines servicing the same direct trip.
What is the earliest Frontier Airlines flight from DFW to ISP?
To find the earliest departure from DFW to ISP with Frontier Airlines, sort your results by "Morning" and "Early Morning." Booking an early flight generally means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Frontier Airlines fly into in Islip?
MacArthur Airport (ISP) is the primary Islip gateway for Frontier Airlines flights from Dallas-Fort Worth Intl. Airport (DFW).
Why fly with Frontier Airlines from DFW to ISP?
With a rewarding loyalty program, Frontier Airlines is a top pick for many passengers heading from DFW to ISP. Plus, as a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Frontier Airlines flight from Dallas-Fort Worth Intl. Airport (DFW) to MacArthur Airport (ISP)?
It's usually possible to cancel or modify your flight, although there may be additional charges if you booked more than 24 hours ago. Want to keep your options open? Apply the "Changes included" and "No cancel fee" filters to find flights that won't charge extra if you have to alter your plans. To update your itinerary, visit "Trips," select your flight and click on "Manage Booking" for more details.

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