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Islip

$97+ Cheap flights from Jacksonville to Islip, NY (JAX - ISP)

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 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ISP
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Jacksonville to Islip

Cheapest flights from Jacksonville to Islip
Explore the most affordable flight options available from Jacksonville to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This Southwest deal was found by Cheapflights users on 12/3. 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.
Wed 12/315:50 pmJAX - ISP
1 stop4h 15mSouthwest
Wed 1/712:40 pmISP - JAX
1 stop4h 20mSouthwest
Deal found 12/3$306
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:28 pmJAX - ISP
1 stop18h 30mMultiple Airlines
Tue 12/304:40 pmISP - JAX
2 stops23h 54mMultiple Airlines
Deal found 12/2$406
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:48 pmJAX - ISP
1 stop19h 57mMultiple Airlines
Mon 12/228:35 pmISP - JAX
2 stops22h 25mMultiple Airlines
Deal found 12/3$445
This Kiwi.com deal was found by Cheapflights users on 12/3. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/243:28 pmJAX - ISP
1 stop18h 30mMultiple Airlines
Mon 12/294:40 pmISP - JAX
2 stops45h 41mMultiple Airlines
Deal found 12/3$464
This Kiwi.com deal was found by Cheapflights users on 12/4. 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.
Mon 12/228:28 pmJAX - ISP
1 stop13h 30mMultiple Airlines
Sun 12/282:19 pmISP - JAX
2 stops26h 08mMultiple Airlines
Deal found 12/4$483
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/203:28 pmJAX - ISP
1 stop18h 30mBreeze Airways
Tue 12/3010:38 amISP - JAX
1 stop28h 10mBreeze Airways
Deal found 12/2$493
This Southwest deal was found by Cheapflights users on 12/3. 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.
Wed 12/245:50 pmJAX - ISP
1 stop4h 15mSouthwest
Mon 12/295:50 pmISP - JAX
1 stop4h 30mSouthwest
Deal found 12/3$514
This Southwest deal was found by Cheapflights users on 12/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/204:15 pmJAX - ISP
2 stops7h 40mSouthwest
Tue 12/301:35 pmISP - JAX
2 stops9h 40mSouthwest
Deal found 12/2$657
This CheapOair deal was found by Cheapflights users on 12/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:52 amJAX - ISP
1 stop24h 13mMultiple Airlines
Mon 12/1511:50 amISP - JAX
2 stops28h 31mMultiple Airlines
Deal found 12/3$684
This Southwest deal was found by Cheapflights users on 12/3. 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.
Fri 12/125:35 pmJAX - ISP
1 stop6h 15mSouthwest
Mon 12/153:55 pmISP - JAX
1 stop4h 20mSouthwest
Deal found 12/3$697

Find flight deals from Jacksonville to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Jacksonville (JAX) to Islip (ISP). 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$306
(Southwest)

One-way from

$97
(Southwest)

Popular in

January

Cheapest in

October

Average price

$359
Provider with most accurate pricing for Jacksonville-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Jacksonville-Islip Long Island flights.
Search Deals
From Jacksonville to Islip Long Island
Search Deals
One-way flight from Jacksonville to Islip Long Island
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Jacksonville to Islip 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 December 4, 2025.
Use the filters below to find and compare flights from Jacksonville to Islip that are best for you.

Fly from

Jacksonville

Fly to

Islip

Route

Depart

Return

Price

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Wed 12/31

5:50 pm-10:05 pm

1 stop4h 15m

Islip Long Island

Wed 1/7

12:40 pm-5:00 pm

1 stop4h 20m

$306

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Sat 12/20

3:28 pm-9:58 am

1 stop18h 30m

Islip Long Island

Tue 12/30

4:40 pm-4:34 pm

2 stops23h 54m

$406

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Fri 1/16

6:45 am-4:35 pm

2 stops9h 50m

Islip Long Island

Sun 1/18

6:00 am-11:10 am

1 stop5h 10m

$412

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Thu 12/18

5:48 pm-1:45 pm

1 stop19h 57m

Islip Long Island

Mon 12/22

8:35 pm-7:00 pm

2 stops22h 25m

$445

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Wed 12/24

3:28 pm-9:58 am

1 stop18h 30m

Islip Long Island

Mon 12/29

4:40 pm-2:21 pm

2 stops45h 41m

$464

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Mon 12/22

8:28 pm-9:58 am

1 stop13h 30m

Islip Long Island

Sun 12/28

2:19 pm-4:27 pm

2 stops26h 08m

$483

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Sat 12/20

3:28 pm-9:58 am

1 stop18h 30m

Islip Long Island

Tue 12/30

10:38 am-2:48 pm

1 stop28h 10m

$493

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Wed 12/24

5:50 pm-10:05 pm

1 stop4h 15m

Islip Long Island

Mon 12/29

5:50 pm-10:20 pm

1 stop4h 30m

$514

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Tue 1/20

5:40 pm-9:55 pm

1 stop4h 15m

$97

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Thu 5/14

12:07 pm-6:06 pm

1 stop5h 59m

$119

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 17 results
1
2

Compare providers for flights from Jacksonville to Islip

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 Jacksonville to Islip in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 Jacksonville-Islip, New York flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Jacksonville-Islip, New York flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Jacksonville-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Jacksonville-Islip, New York flights, Cheapflights users trust eDreams the most. eDreams 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 Jacksonville-Islip, New York 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 Jacksonville to Islip

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

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

Currently, March is the cheapest month in which you can book a flight from Jacksonville to Islip, New York (average of $68). Flying from Jacksonville to Islip, New York in January is currently the most expensive (average of $134). 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 JAX to ISP?

Find hourly flight availability from Jacksonville to Islip. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 4, 2025.

A simple way to save on the total cost of your ticket is to fly from Jacksonville to Islip, New York at noon. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the evening.

Reviews of airlines servicing Islip

Get insights into the airlines that provide service to Islip. 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 Islip. Reviews last updated December 4, 2025.
Get a feel of what it's like to fly with Southwest and JetBlue from Jacksonville to Islip by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,251 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,251 reviews
Southwest
8.0
Very good
4,251 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
JetBlue
7.2
Good
2,899 reviews
Southwest
8.0
Very good
4,251 reviews

Boarding

8.1

Entertainment

7.5

Food

7.0

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Jacksonville to Islip. 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 Jacksonville to Islip, New York?

    Departing from Jacksonville to Islip, New York will take you 4h 15m. There are 858 mi between Jacksonville and Islip, New York.

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

    Cheapflights users have booked flights from Jacksonville to Islip, New York round-trip from $267. Another airline that can offer you cheap pricing is JetBlue. Users have found that Southwest is 36% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Jacksonville to Islip, New York (average of $68). Flying from Jacksonville to Islip, New York in January is currently the most expensive (average of $134). 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
Riverhead

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Alternative routes for Jacksonville to Islip

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Top 2 airlines flying from Jacksonville to Islip

Discover the top 2 airlines that operate flights from Jacksonville to Islip. 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 December 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$267Average$385FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$287Average$417FlexibilityNo cancel feeOn-time62%

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