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$146+ Cheap flights from Islip, NY to Jacksonville (ISP - JAX)

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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — JAX
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Islip to Jacksonville

Discover tips and strategies to find the most affordable flight options for your journey from Islip (ISP) to Jacksonville (JAX). 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 July 3, 2025.

Round-trip from

$237
(Southwest)

One-way from

$146
(Southwest)

Popular in

March

Cheapest in

August

Average price

$341
From Islip Long Island to Jacksonville
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One-way flight from Islip Long Island to Jacksonville
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Highest demand for flights based on searches. 9% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Islip to Jacksonville

Cheapest flights from Islip to Jacksonville
Explore the most affordable flight options available from Islip to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Southwest deal was found by Cheapflights users on 7/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/213:05 pmISP - JAX
1 stop6h 05mSouthwest
Mon 8/256:25 pmJAX - ISP
1 stop4h 30mSouthwest
Deal found 7/3$237
This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/232:19 pmISP - JAX
1 stop23h 35mMultiple Airlines
Sun 10/264:58 pmJAX - ISP
2 stops41h 39mMultiple Airlines
Deal found 7/2$449
This Frontier deal was found by Cheapflights users on 7/3. 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 7/118:00 amISP - JAX
2 stops7h 38mFrontier
Sun 7/139:55 pmJAX - ISP
2 stops15h 09mFrontier
Deal found 7/3$479
This FlightHub deal was found by Cheapflights users on 7/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/232:19 pmISP - JAX
1 stop23h 35mBreeze Airways
Sun 10/265:48 pmJAX - ISP
1 stop19h 57mBreeze Airways
Deal found 7/2$509

Cheapflights Fare Finder

Customize your flight search to find flights from Islip to Jacksonville 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 July 3, 2025.
Use the filters below to find and compare flights from Islip to Jacksonville that are best for you.

Fly from

Islip

Fly to

Jacksonville

Route

Depart

Return

Price

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Thu 8/21

3:05 pm-9:10 pm

1 stop6h 05m

Jacksonville

Mon 8/25

6:25 pm-10:55 pm

1 stop4h 30m

$237

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Thu 10/23

2:19 pm-1:54 pm

1 stop23h 35m

Jacksonville

Sun 10/26

4:58 pm-10:37 am

2 stops41h 39m

$449

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Thu 10/23

2:19 pm-1:54 pm

1 stop23h 35m

Jacksonville

Sun 10/26

5:48 pm-1:45 pm

1 stop19h 57m

$509

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Thu 8/14

6:25 am-4:45 pm

2 stops10h 20m

$146

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Mon 7/14

8:00 am-3:38 pm

2 stops7h 38m

$216

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Thu 9/18

2:19 pm-1:54 pm

1 stop23h 35m

$285

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Mon 7/28

10:44 am-10:26 am

3 stops23h 42m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Best time to book a flight from Islip to Jacksonville

Have a flexible travel schedule? Discover the best time to fly to Jacksonville 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 Jacksonville

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

Currently, August is the cheapest month in which you can book a flight from Islip, New York to Jacksonville (average of $278). Flying from Islip, New York to Jacksonville in March is currently the most expensive (average of $365). 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 JAX?

Find hourly flight availability from Islip to Jacksonville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

A simple way to save on the total cost of your ticket is to fly from Islip, New York to Jacksonville at noon. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight in the evening.

Reviews of airlines servicing Jacksonville

Get insights into the airlines that provide service to Jacksonville. 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 Jacksonville. Reviews last updated July 3, 2025.
Read through reviews of airlines operating flights from Islip to Jacksonville, such as Breeze Airways, Southwest, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Breeze Airways
8.1
Very good
183 reviews

Comfort

8.2

Crew

8.8

Boarding

8.3

Overall

8.1

Entertainment

6.6

Food

6.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Breeze Airways
8.1
Very good
183 reviews
Breeze Airways
8.1
Very good
183 reviews

Comfort

8.2

Crew

8.8

Boarding

8.3

Overall

8.1

Entertainment

6.6

Food

6.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Southwest
8.0
Very good
4,266 reviews
Breeze Airways
8.1
Very good
183 reviews

Comfort

8.2

Crew

8.8

Boarding

8.3

Overall

8.1

Entertainment

6.6

Food

6.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!
Frontier
5.9
Fair
3,286 reviews
Breeze Airways
8.1
Very good
183 reviews

Comfort

8.2

Crew

8.8

Boarding

8.3

Overall

8.1

Entertainment

6.6

Food

6.8

Reviews

1 / 11
10.0
Excellent

Dena,Dec 2024

LAS - BDL

It was comfortable and the crew was great! A few free snacks offered would be nice!

Related info for your journey

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

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

    Currently priced at $237, Southwest will fly you from Islip, New York to Jacksonville and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Breeze Airways for as low as $509. Southwest is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Islip, New York to Jacksonville one-way?

    $146 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Frontier and Breeze Airways, with prices starting from $216 and $285, respectively.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Islip, New York to Jacksonville (average of $278). Flying from Islip, New York to Jacksonville in March is currently the most expensive (average of $365). 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
Jacksonville Beach
Orange Park
Kingsland
Fernandina Beach
Waycross

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Top airline flying from Islip to Jacksonville

Discover the top airline that operate flights from Islip to Jacksonville. 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$312Average$406FlexibilityNo cancel feeOn-time63%

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