ISP - JAX

$123 Find Cheap Flights from Islip to Jacksonville

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Islip to Jacksonville departing on 11/13. 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, 0 bags

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

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

Cheap Flights from Islip to Jacksonville (ISP-JAX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Islip to Jacksonville 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 Islip to Jacksonville

Fri, Nov 14 - Thu, Nov 20
Multiple Airlines Logo
4:58 pm - 10:18 amISP-JAX
41h 20m2 stops
Multiple Airlines Logo
2:25 pm - 6:56 pmJAX-ISP
4h 31m1 stop
$289Multiple Airlines
Find Deal
Thu, Nov 13 - Mon, Nov 17
Multiple Airlines Logo
2:19 pm - 1:54 pmISP-JAX
23h 35m1 stop
Multiple Airlines Logo
10:38 pm - 10:37 amJAX-ISP
35h 59m2 stops
$302Multiple Airlines
Find Deal
Wed, Feb 11 - Sun, Feb 22
Breeze Airways Logo
11:50 am - 10:41 amISP-JAX
22h 51m1 stop
Breeze Airways Logo
5:51 pm - 1:31 pmJAX-ISP
19h 40m1 stop
$309Breeze Airways
Find Deal
Thu, Dec 4 - Tue, Dec 9
Southwest Logo
12:55 pm - 8:15 pmISP-JAX
7h 20m1 stop
Southwest Logo
7:00 am - 12:15 pmJAX-ISP
5h 15m1 stop
$313Southwest
Find Deal
Thu, Dec 4 - Tue, Dec 9
Southwest Logo
12:55 pm - 8:15 pmISP-JAX
7h 20m1 stop
Southwest Logo
11:10 am - 9:40 pmJAX-ISP
10h 30m2 stops
$318Southwest
Find Deal
Sat, Jan 10 - Mon, Jan 12
Southwest Logo
5:45 am - 10:50 amISP-JAX
5h 05m1 stop
Southwest Logo
5:40 pm - 9:55 pmJAX-ISP
4h 15m1 stop
$334Southwest
Find Deal
Fri, Nov 28 - Wed, Dec 10
Multiple Airlines Logo
11:32 am - 10:04 amISP-JAX
22h 32m2 stops
Multiple Airlines Logo
10:33 am - 9:58 amJAX-ISP
23h 25m1 stop
$338Multiple Airlines
Find Deal
Sat, Dec 13 - Mon, Dec 15
Southwest Logo
11:55 am - 4:40 pmISP-JAX
4h 45m1 stop
Southwest Logo
6:10 am - 3:20 pmJAX-ISP
9h 10m2 stops
$339Southwest
Find Deal
Wed, Feb 11 - Sun, Feb 22
Breeze Airways Logo
11:50 am - 10:41 amISP-JAX
22h 51m1 stop
Breeze Airways Logo
3:45 pm - 1:31 pmJAX-ISP
21h 46m2 stops
$350Breeze Airways
Find Deal
Thu, Nov 13 - Sat, Nov 15
Breeze Airways Logo
7:36 pm - 8:58 amISP-JAX
13h 22m1 stop
Breeze Airways Logo
8:37 pm - 6:56 pmJAX-ISP
22h 19m2 stops
$386Breeze Airways
Find Deal

Everything you should know

Top airlines
Breeze Airways
Cheapest • from $309 (round-trip)
Southwest
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
July
Cheapest • 27% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$289
Overall average: $491
Multiple Airlines
Fri 11/14Thu 11/20
ISP - JAX • 2 stops
Cheapest one-way
$123
Typical prices: $373-$433
Frontier
Thu 11/13
ISP - JAX • 2 stops
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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 Jacksonville!
Booking Insights

KAYAK's insights & trends for Islip to Jacksonville flights

Get data-powered insights and trends into flights from Islip to Jacksonville 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 Islip to Jacksonville?

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

When flying from Islip to Jacksonville, you should consider leaving on a Saturday and avoid Tuesdays if you are looking for the best rates. For your return to Islip, you’ll find the best rates on Wednesdays and the most expensive ones on Mondays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Islip to Jacksonville, 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 Islip to Jacksonville is July, where tickets cost $307 (return) on average. On the other hand, the most expensive months are March and September, where the average cost of round-trip tickets is $646 and $516 respectively.

Good to know

Low seasonSeptember
Cheapest flight$123
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly and prices are also 21% lower on average.
Flight from Islip to Jacksonville

When to book flights from Islip to Jacksonville

Are your dates flexible? Find out the best times to travel from Islip to Jacksonville 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 Islip to Jacksonville

  • What is the cheapest flight from Islip to Jacksonville?

    In the last 3 days, the lowest price for a flight from Islip to Jacksonville was $123 for a one-way ticket and $289 for a round-trip.

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

    A passport is not required to fly from Islip to Jacksonville.

  • Which airports will I be using when flying from Islip to Jacksonville?

    Islip and Jacksonville are both served by 1 main airport. You will leave Islip from Islip Long Island and will be arriving at Jacksonville.

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

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

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

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

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

    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 Islip to Jacksonville.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Jacksonville from Islip 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 Islip to Jacksonville?

    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 Jacksonville with an airline and back to Islip with another airline. Booking your flights between Islip and JAX 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 Islip to Jacksonville?

    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 Jacksonville from Islip 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 Islip to Jacksonville

 
See real verified KAYAK customer reviews for airlines flying from Islip to Jacksonville. 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 Islip to Jacksonville? 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 4243 reviews
8.1Boarding
7.0Food
8.6Crew
7.5Entertainment
8.0Comfort
Airline reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

8.0 ExcellentGreg, Oct 2025OAK - BUR
Read more Southwest reviews

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

Full cans of soda would be nice. A choice between two snacks would be appreciated.

Tried watching free movie and it kept freezing so I couldn’t finish.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Sacrament staff are always polite and helpful. Airport is easy to maneuver and boarding is straightforward.

Great flight. Outstanding Service. Southwest was able to put us on a direct flight to Denver when the connection could have been affected by a later arrival to Baltimore. The direct flight was less expensive that the flight with the connection in Baltimore.

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Flight was delayed due to plane not passing inspection And one of the crew had to time out and we had to wait for another one A 3 hour delay

The quality of Southwest Airlines continues to degrade each time I fly with them. If it were not for the free luggage, I would probably choose another airline. Their prices are a little bit competitive, but way too high for the quality of the service. Southwest is not unique in this way. Domestic flight in the United States of America has continued to be a lower and lower quality product. Very sad when you compare the quality of domestic airlines to that of many international airlines around the world.

It was one and half hour late... Not sure if any other experience matters.

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

Information on your arrival and departure airports

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