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$117+ 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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — JAX
May 22 — May 291
Fri 5/22
Fri 5/29
1 adult, Economy
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Cheap 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 April 22, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:49 pm
ISP
-
JAX
1 stop13h 08m
Breeze Airways
Thu 8/279:03 pm
JAX
-
ISP
1 stop16h 25m
Breeze Airways
Deal found 4/19$244
This Kiwi.com deal was found by Cheapflights users on 4/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:28 pm
ISP
-
JAX
2 stops27h 07m
Multiple Airlines
Tue 6/99:03 pm
JAX
-
ISP
1 stop14h 14m
Multiple Airlines
Deal found 4/19$262
This Southwest deal was found by Cheapflights users on 4/22. 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.
Tue 6/24:10 pm
ISP
-
JAX
1 stop4h 35m
Southwest
Thu 6/47:30 pm
JAX
-
ISP
1 stop4h 05m
Southwest
Deal found 4/22$276
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/911:56 am
ISP
-
JAX
1 stop21h 56m
Multiple Airlines
Tue 6/166:28 pm
JAX
-
ISP
2 stops39h 35m
Multiple Airlines
Deal found 4/17$288
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2311:57 am
ISP
-
JAX
1 stop20h 41m
Multiple Airlines
Fri 5/298:47 am
JAX
-
ISP
2 stops25h 18m
Multiple Airlines
Deal found 4/20$300
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:49 pm
ISP
-
JAX
1 stop13h 08m
Breeze Airways
Tue 6/29:03 pm
JAX
-
ISP
1 stop14h 14m
Breeze Airways
Deal found 4/20$308
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/317:49 pm
ISP
-
JAX
1 stop13h 08m
Multiple Airlines
Tue 6/26:30 pm
JAX
-
ISP
2 stops16h 47m
Multiple Airlines
Deal found 4/20$311
This Southwest deal was found by Cheapflights users on 4/20. 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.
Sat 5/234:40 pm
ISP
-
JAX
1 stop5h 15m
Southwest
Sat 5/306:35 pm
JAX
-
ISP
1 stop4h 45m
Southwest
Deal found 4/20$318
This Southwest deal was found by Cheapflights users on 4/21. 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.
Tue 6/99:00 am
ISP
-
JAX
1 stop5h 15m
Southwest
Fri 6/127:30 pm
JAX
-
ISP
1 stop4h 05m
Southwest
Deal found 4/21$321

Find 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 April 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$244
(Kiwi.com)

One-way from

$117
(Southwest)

Popular in

March

Cheapest in

February

Average price

$386
Provider with most accurate pricing for Islip Long Island-Jacksonville flight deals.
Search Deals
Provider most trusted by Cheapflights users for Islip Long Island-Jacksonville flights.
Search Deals
From Islip Long Island to Jacksonville
Search Deals
One-way flight from Islip Long Island to Jacksonville
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 22, 2026.
Use the filters below to find and compare flights from Islip to Jacksonville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Tue 6/2

4:10 pm-8:45 pm

1 stop4h 35m

Jacksonville

Thu 6/4

7:30 pm-11:35 pm

1 stop4h 05m

$276

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Wed 6/3

6:55 am-3:45 pm

2 stops8h 50m

Jacksonville

Sat 6/6

7:00 pm-11:10 pm

1 stop4h 10m

$281

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Sat 5/23

4:40 pm-9:55 pm

1 stop5h 15m

Jacksonville

Sat 5/30

6:35 pm-11:20 pm

1 stop4h 45m

$318

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Tue 6/9

12:25 pm-4:55 pm

1 stop4h 30m

Jacksonville

Tue 6/16

4:45 pm-10:35 pm

1 stop5h 50m

$335

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Mon 5/25

2:28 pm-8:38 am

1 stop18h 10m

Jacksonville

Thu 5/28

12:07 pm-6:06 pm

1 stop5h 59m

$356

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Sat 5/23

9:20 am-2:10 pm

1 stop4h 50m

Jacksonville

Sat 5/23

6:35 pm-11:20 pm

1 stop4h 45m

$362

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Fri 6/5

5:20 am-1:35 pm

2 stops8h 15m

Jacksonville

Tue 6/9

11:05 am-10:35 pm

2 stops11h 30m

$404
Cheapest one-way
Quickest one-way

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Tue 6/9

4:40 pm-8:50 pm

1 stop4h 10m

$117

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Mon 6/15

2:28 pm-5:33 pm

2 stops27h 05m

$153

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Mon 7/13

2:28 pm-8:38 am

1 stop18h 10m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 16 resultsSorted by cheapest first
1
2

Compare providers for flights from Islip to Jacksonville

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Jacksonville in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Islip, New York-Jacksonville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Jacksonville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Jacksonville flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Islip, New York-Jacksonville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Islip, New York-Jacksonville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, February is the cheapest month in which you can book a flight from Islip, New York to Jacksonville (average of $227). Flying from Islip, New York to Jacksonville in March is currently the most expensive (average of $590). 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.

How much does it cost to fly round-trip from Islip, New York to Jacksonville?

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 April 22, 2026.
Read through reviews of airlines operating flights from Islip to Jacksonville, 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
4,330 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,330 reviews
Southwest
8.0
Very good
4,330 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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.

  • How long is the flight from Islip, New York to Jacksonville?

    A quick flight from Islip, New York to Jacksonville can take about 4h 35m. Southwest provides one of the quickest options available for as low as $276. Airlines will cover a distance of 858 mi.

  • What is the cheapest airline to fly from Islip, New York to Jacksonville round-trip?

    Currently priced at $280, 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. Southwest is 27% 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 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, February is the cheapest month in which you can book a flight from Islip, New York to Jacksonville (average of $227). Flying from Islip, New York to Jacksonville in March is currently the most expensive (average of $590). 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 Jacksonville?

Book flights to Jacksonville if you plan to visit one of these locations
Jacksonville Beach
Orange Park
Fernandina Beach
Kingsland
Waycross
Yulee

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Alternative routes for Islip to Jacksonville

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 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 April 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$280Average$406FlexibilityNo cancel feeOn-time63%

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