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Islip

$77+ 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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
JAX — ISP
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap 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 August 14, 2025.

Round-trip from

$209
(Southwest)

One-way from

$77
(CheapOair)

Popular in

January

Cheapest in

May

Average price

$676
From Jacksonville to Islip Long Island
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One-way flight from Jacksonville to Islip Long Island
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Highest demand for flights based on searches. 11% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 14, 2025.

This Southwest deal was found by Cheapflights users on 8/11. 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 9/1011:10 amJAX - ISP
1 stop4h 00mSouthwest
Wed 9/176:05 amISP - JAX
1 stop4h 05mSouthwest
Deal found 8/11$209
This FlightHub deal was found by Cheapflights users on 8/14. 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 11/134:58 pmJAX - ISP
2 stops15h 56mFrontier
Sun 11/1611:37 amISP - JAX
2 stops27h 29mFrontier
Deal found 8/14$236
This Southwest deal was found by Cheapflights users on 8/13. 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.
Mon 9/86:25 pmJAX - ISP
1 stop4h 30mSouthwest
Thu 9/186:00 amISP - JAX
1 stop4h 35mSouthwest
Deal found 8/13$237
This Southwest deal was found by Cheapflights users on 8/14. 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 9/196:25 pmJAX - ISP
1 stop4h 30mSouthwest
Wed 9/246:05 amISP - JAX
1 stop4h 05mSouthwest
Deal found 8/14$245
This Southwest deal was found by Cheapflights users on 8/12. 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 9/186:25 pmJAX - ISP
1 stop4h 30mSouthwest
Mon 9/226:00 amISP - JAX
1 stop4h 35mSouthwest
Deal found 8/12$259
This Southwest deal was found by Cheapflights users on 8/11. 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 10/246:15 pmJAX - ISP
1 stop5h 30mSouthwest
Tue 10/2811:40 amISP - JAX
2 stops10h 25mSouthwest
Deal found 8/11$264
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Fri 9/194:16 pmJAX - ISP
2 stops18h 39mFrontier
Wed 9/2411:35 amISP - JAX
2 stops24h 08mFrontier
Deal found 8/14$281
This FlightHub deal was found by Cheapflights users on 8/14. 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.
Fri 10/2411:37 amJAX - ISP
2 stops23h 00mFrontier
Sun 10/269:47 pmISP - JAX
2 stops23h 00mFrontier
Deal found 8/14$295
This FlightHub deal was found by Cheapflights users on 8/13. 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.
Sun 8/177:49 pmJAX - ISP
2 stops52h 10mFrontier
Sat 8/238:00 amISP - JAX
2 stops30h 27mFrontier
Deal found 8/13$298

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 August 14, 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 9/10

11:10 am-3:10 pm

1 stop4h 00m

Islip Long Island

Wed 9/17

6:05 am-10:10 am

1 stop4h 05m

$209

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Thu 11/13

4:58 pm-8:54 am

2 stops15h 56m

Islip Long Island

Sun 11/16

11:37 am-3:06 pm

2 stops27h 29m

$236

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Mon 9/8

6:25 pm-10:55 pm

1 stop4h 30m

Islip Long Island

Thu 9/18

6:00 am-10:35 am

1 stop4h 35m

$237

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Sat 9/13

5:25 pm-9:40 pm

1 stop4h 15m

Islip Long Island

Sat 9/20

12:15 pm-5:10 pm

1 stop4h 55m

$237

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Fri 9/19

6:25 pm-10:55 pm

1 stop4h 30m

Islip Long Island

Wed 9/24

6:05 am-10:10 am

1 stop4h 05m

$245

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Fri 10/10

6:15 pm-11:45 pm

1 stop5h 30m

Islip Long Island

Tue 10/14

6:00 am-10:35 am

1 stop4h 35m

$245

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Thu 9/18

6:25 pm-10:55 pm

1 stop4h 30m

Islip Long Island

Mon 9/22

6:00 am-10:35 am

1 stop4h 35m

$259

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Fri 10/17

6:15 pm-11:45 pm

1 stop5h 30m

Islip Long Island

Sat 10/25

11:55 am-5:00 pm

1 stop5h 05m

$259

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Thu 11/13

7:45 pm-11:50 pm

1 stop4h 05m

Islip Long Island

Sun 11/16

5:30 pm-10:00 pm

1 stop4h 30m

$259

JacksonvilleIslip

JAX - ISP

JAXISP

Jacksonville

Fri 10/24

6:15 pm-11:45 pm

1 stop5h 30m

Islip Long Island

Tue 10/28

6:00 am-10:35 am

1 stop4h 35m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 21 results
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2
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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, January is the cheapest month in which you can book a flight from Jacksonville to Islip, New York (average of $108). Flying from Jacksonville to Islip, New York in November is currently the most expensive (average of $213). 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 August 14, 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 21% 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 August 14, 2025.
Get a feel of what it's like to fly with Southwest 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
4,244 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Boarding

8.1

Entertainment

7.5

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

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

    Cheapflights users have booked flights from Jacksonville to Islip, New York round-trip from $280. Users have found that Southwest is 37% 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, January is the cheapest month in which you can book a flight from Jacksonville to Islip, New York (average of $108). Flying from Jacksonville to Islip, New York in November is currently the most expensive (average of $213). 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
Southampton

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Alternative routes for Jacksonville to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Jacksonville to Islip

Discover the top airline 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$280Average$376FlexibilityNo cancel feeOn-time63%

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