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$111+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
ISP — JAX
nov. 22 — nov. 291
sáb. 11/22
sáb. 11/29
1 adult, Economy
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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 octubre 23, 2025.

This Southwest deal was found by Cheapflights users on 10/22. 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.
mié. 12/33:55 pmISP - JAX
1 stop4h 20mSouthwest
jue. 12/43:55 pmJAX - ISP
1 stop6h 10mSouthwest
Deal found 10/22$311
This Southwest deal was found by Cheapflights users on 10/21. 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.
sáb. 12/133:40 pmISP - JAX
1 stop4h 30mSouthwest
dom. 12/147:45 pmJAX - ISP
1 stop4h 05mSouthwest
Deal found 10/21$320
This Southwest deal was found by Cheapflights users on 10/22. 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.
vie. 11/1411:05 amISP - JAX
1 stop5h 15mSouthwest
sáb. 11/157:50 amJAX - ISP
1 stop4h 00mSouthwest
Deal found 10/22$360
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/278:47 pmISP - JAX
2 stops36h 06mBreeze Airways
jue. 10/302:15 pmJAX - ISP
1 stop4h 41mBreeze Airways
Deal found 10/21$375
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/132:19 pmISP - JAX
1 stop23h 35mMultiple Airlines
vie. 11/219:31 pmJAX - ISP
2 stops36h 38mMultiple Airlines
Deal found 10/22$404
This Southwest deal was found by Cheapflights users on 10/21. 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.
sáb. 11/1511:55 amISP - JAX
1 stop4h 45mSouthwest
mié. 11/193:55 pmJAX - ISP
1 stop6h 10mSouthwest
Deal found 10/21$407
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/58:21 pmISP - JAX
2 stops35h 23mMultiple Airlines
dom. 11/92:25 pmJAX - ISP
1 stop4h 31mMultiple Airlines
Deal found 10/21$415

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 octubre 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$311
(Southwest)

One-way from

$111
(Southwest)

Popular in

March

Cheapest in

July

Average price

$476
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. 9% potential increase in price ($43 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 octubre 23, 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

mié. 12/3

3:55 pm-8:15 pm

1 stop4h 20m

Jacksonville

jue. 12/4

3:55 pm-10:05 pm

1 stop6h 10m

$311

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

sáb. 12/13

3:40 pm-8:10 pm

1 stop4h 30m

Jacksonville

dom. 12/14

7:45 pm-11:50 pm

1 stop4h 05m

$320

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

lun. 10/27

8:47 pm-8:53 am

2 stops36h 06m

Jacksonville

jue. 10/30

2:15 pm-6:56 pm

1 stop4h 41m

$375

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

vie. 11/14

7:00 am-4:20 pm

2 stops9h 20m

Jacksonville

sáb. 11/15

7:50 am-11:50 am

1 stop4h 00m

$375

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

sáb. 11/15

11:55 am-4:40 pm

1 stop4h 45m

Jacksonville

mié. 11/19

3:55 pm-10:05 pm

1 stop6h 10m

$407

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

jue. 11/6

7:36 pm-8:58 am

1 stop13h 22m

Jacksonville

lun. 11/10

2:01 pm-10:37 am

2 stops44h 36m

$415

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

jue. 11/13

11:05 am-4:20 pm

1 stop5h 15m

Jacksonville

vie. 11/21

5:35 pm-11:50 pm

1 stop6h 15m

$427

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

mar. 1/13

3:45 pm-8:35 pm

1 stop4h 50m

$111

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

sáb. 12/13

11:55 am-4:40 pm

1 stop4h 45m

$126

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

lun. 1/12

3:45 pm-8:35 pm

1 stop4h 50m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 16 results
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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 $68). Flying from Islip, New York to Jacksonville in December is currently the most expensive (average of $139). 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 octubre 23, 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 22% 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 octubre 23, 2025.
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
4,236 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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
4,236 reviews
Southwest
8.0
Very good
4,236 reviews

Overall

8.0

Crew

8.6

Comfort

8.0

Boarding

8.1

Food

7.0

Entertainment

7.5

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 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 20m. Southwest provides one of the quickest options available for as low as $311. 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 $302, 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 28% 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 $68). Flying from Islip, New York to Jacksonville in December is currently the most expensive (average of $139). 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

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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 octubre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$302Average$410FlexibilityNo cancel feeOn-time63%

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