JAX - ISP

$124 Find Cheap Flights from Jacksonville to Islip

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Jacksonville to Islip departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Islip

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Jacksonville to Islip, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Jacksonville to Islip, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Jacksonville to Islip (JAX-ISP)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Jacksonville to Islip that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Jacksonville to Islip

Thu, Oct 30 - Mon, Nov 3
Multiple Airlines Logo
2:15 pm - 6:56 pmJAX-ISP
4h 41m1 stop
Multiple Airlines Logo
2:25 pm - 9:53 pmISP-JAX
7h 28m2 stops
$260Multiple Airlines
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Thu, Oct 30 - Mon, Nov 3
Frontier Logo
5:13 pm - 9:09 amJAX-ISP
15h 56m2 stops
Frontier Logo
9:54 am - 9:53 pmISP-JAX
11h 59m2 stops
$279Frontier
Find Deal
Tue, Oct 14 - Wed, Nov 5
Southwest Logo
11:25 am - 4:05 pmJAX-ISP
4h 40m1 stop
Southwest Logo
12:55 pm - 5:35 pmISP-JAX
4h 40m1 stop
$305Southwest
Find Deal
Tue, Oct 14 - Tue, Nov 4
Southwest Logo
11:25 am - 4:05 pmJAX-ISP
4h 40m1 stop
Southwest Logo
5:40 am - 3:20 pmISP-JAX
9h 40m2 stops
$310Southwest
Find Deal
Thu, Oct 30 - Mon, Nov 3
Southwest Logo
6:15 pm - 11:45 pmJAX-ISP
5h 30m1 stop
Southwest Logo
5:40 am - 10:25 amISP-JAX
4h 45m1 stop
$313Southwest
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Tue, Oct 14 - Wed, Nov 5
Southwest Logo
11:25 am - 4:05 pmJAX-ISP
4h 40m1 stop
Southwest Logo
5:40 am - 3:20 pmISP-JAX
9h 40m2 stops
$318Southwest
Find Deal
Fri, Oct 31 - Tue, Nov 4
Southwest Logo
5:15 pm - 9:10 pmJAX-ISP
3h 55m1 stop
Southwest Logo
12:55 pm - 8:15 pmISP-JAX
7h 20m1 stop
$326Southwest
Find Deal
Fri, Sep 26 - Sun, Sep 28
Breeze Airways Logo
9:31 pm - 6:52 pmJAX-ISP
21h 21m2 stops
Breeze Airways Logo
2:19 pm - 1:54 pmISP-JAX
23h 35m1 stop
$728Breeze Airways
Find Deal
Mon, Sep 29 - Fri, Oct 3
Breeze Airways Logo
9:31 pm - 8:05 pmJAX-ISP
46h 34m2 stops
Breeze Airways Logo
8:47 pm - 5:10 pmISP-JAX
44h 23m2 stops
$737Breeze Airways
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Tue, Oct 14 - Tue, Nov 4
Multiple Airlines Logo
7:15 am - 8:01 pmJAX-ISP
12h 46m2 stops
Multiple Airlines Logo
7:30 am - 9:22 pmISP-JAX
13h 52m3 stops
$740Multiple Airlines
Find Deal

Everything you should know

Top airlines
Frontier
Cheapest • from $279 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
May
Cheapest • 17% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$260
Overall average: $359
Multiple Airlines
Thu 10/30Mon 11/3
JAX - ISP • 1 stop
Cheapest one-way
$124
Typical prices: $224-269
Breeze Airways
Thu 2/12
JAX - ISP • 1 stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Islip!
Booking Insights

KAYAK's insights & trends for Jacksonville to Islip flights

Get data-powered insights and trends into flights from Jacksonville to Islip to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Jacksonville to Islip?

The average price of all round-trip flights from Jacksonville to Islip clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Jacksonville to Islip, look for departures on Wednesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Islip, Saturday is the cheapest day to fly and Tuesday is the most expensive.

What is the cheapest month to fly from Jacksonville to Islip?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Jacksonville to Islip, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Jacksonville to Islip is May, where tickets cost $348 (return) on average. On the other hand, the most expensive months are January and March, where the average cost of round-trip tickets is $766 and $421 respectively.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$124
Best time to beat the crowds but there is an average 82% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Jacksonville to Islip

When to book flights from Jacksonville to Islip

Are your dates flexible? Find out the best times to travel from Jacksonville to Islip based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Jacksonville to Islip

  • What is the cheapest flight from Jacksonville to Islip?

    In the last 3 days, the lowest price for a flight from Jacksonville to Islip was $124 for a one-way ticket and $260 for a round-trip.

  • Do I need a passport to fly between Jacksonville and Islip?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which aircraft models fly most regularly from Jacksonville to Islip?

    We unfortunately don’t have that data for this specific route.

  • What is the most popular layover when flying to Islip from Jacksonville?

    Baltimore is the most popular layover city among KAYAK users traveling from Jacksonville to Islip.

  • How does KAYAK find such low prices on flights from Jacksonville to Islip?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Jacksonville to Islip.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Jacksonville to Islip?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Islip from Jacksonville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Jacksonville to Islip?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Islip with an airline and back to Jacksonville with another airline. Booking your flights between Jacksonville and ISP can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Jacksonville to Islip?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Islip from Jacksonville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Jacksonville to Islip

 
See real verified KAYAK customer reviews for airlines flying from Jacksonville to Islip. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Jacksonville to Islip? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4242 reviews
8.1Boarding
8.6Crew
7.0Food
8.0Comfort
7.5Entertainment
Airline reviews

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

6.0 GoodDavid, Aug 2025MCO - DEN
Read more Southwest reviews

Near 4 hour flight with only 1 service. Had to use call button to request water. Internet and power not working until into flight. Internet would stop working during flight.

My flight was delayed 50 minutes and we were rushed to board to then sit for 15 minutes until the pilot arrived. Unacceptable since we could have waited to board. Also the delayed flight was updated AFTER we boarded to more than the 10 minutes as originally stated.

If we are going to have to pay for luggage, make it easier to do. Put something on the app during check-in so I don't need to do it at the kiosk. I've done it twice recently and I ended up having to pay at the desk because something went wrong at the kiosk in Tampa.

after landing, we stay 2 hours on the taxi way before reaching the gate The airline and the crew were good though

Everything was on time. I was disappointed by the front section female, African American flight attendant. I did not see her name tag or would have identified by name not race. As passengers moved to the bathroom early in flight, she would say with a disdainful tone “I have to say the seat belt light is on” then go back to her book. Better trained flight attendants say something like be careful the seat belt light is on.

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

My flight to Chicago left and landed early. My return flight left two minutes late and arrived 2 minutes late. My seat selections were ideal! There were no snacks going to Chicago and no snacks on the return trip. There are no charging outlets on board.

WiFi on the flight was not working. Thus, entertainment options were limited.

Gate agents were informative and friendly… flight attendants were as well. Had a fun time chatting about their legacy AirTran experiences as a former fan of the airline that Southwest acquired.

Flight was awfully bumpy and landing was a bit jolting. I was in the restroom when snacks and drinks were served and was not asked if i wanted any. I had to ask for water finally.

Everything you need to know for your flight from Jacksonville to Islip

Information on your arrival and departure airports

Jacksonville (JAX)
Islip (ISP)

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