ISP - JAX

$184 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 8/1. 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 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights 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

Sat, Jul 12 - Tue, Jul 15
Southwest Logo
6:00 am - 10:20 amISP-JAX
4h 20m1 stop
Southwest Logo
7:25 am - 12:00 pmJAX-ISP
4h 35m1 stop
$297Southwest
Find Deal
Thu, Sep 25 - Mon, Sep 29
Southwest Logo
12:10 pm - 6:40 pmISP-JAX
6h 30m1 stop
Southwest Logo
6:25 pm - 10:45 pmJAX-ISP
4h 20m1 stop
$319Southwest
Find Deal
Sat, Jul 12 - Tue, Jul 15
Southwest Logo
6:00 am - 10:20 amISP-JAX
4h 20m1 stop
Southwest Logo
6:25 am - 2:05 pmJAX-ISP
7h 40m2 stops
$324Southwest
Find Deal
Tue, Jul 8 - Fri, Jul 18
Southwest Logo
6:00 am - 11:00 amISP-JAX
5h 00m1 stop
Southwest Logo
7:45 pm - 12:05 amJAX-ISP
4h 20m1 stop
$332Southwest
Find Deal
Wed, Oct 15 - Sun, Oct 19
Frontier Logo
5:05 pm - 3:58 pmISP-JAX
22h 53m2 stops
Frontier Logo
4:58 pm - 8:54 amJAX-ISP
15h 56m2 stops
$456Frontier
Find Deal
Fri, Oct 10 - Mon, Oct 13
Frontier Logo
8:48 pm - 3:58 pmISP-JAX
43h 10m2 stops
Frontier Logo
12:02 pm - 10:37 amJAX-ISP
46h 35m2 stops
$497Frontier
Find Deal
Tue, Jul 1 - Sat, Jul 5
Breeze Airways Logo
1:55 pm - 9:53 amISP-JAX
19h 58m1 stop
Breeze Airways Logo
12:50 pm - 10:04 amJAX-ISP
45h 14m2 stops
$601Breeze Airways
Find Deal
Tue, Jul 8 - Wed, Jul 16
Breeze Airways Logo
1:55 pm - 9:53 amISP-JAX
19h 58m1 stop
Breeze Airways Logo
12:50 pm - 10:04 amJAX-ISP
45h 14m2 stops
$604Breeze Airways
Find Deal
Mon, Jul 14 - Thu, Jul 17
Logo
10:44 am - 10:26 amISP-JAX
23h 42m3 stops
Logo
9:44 am - 10:04 amJAX-ISP
24h 20m3 stops
$626
Find Deal
Tue, Jul 22 - Fri, Jul 25
Logo
11:53 am - 9:07 amISP-JAX
21h 14m1 stop
Logo
8:49 pm - 10:58 amJAX-ISP
14h 09m1 stop
$744
Find Deal
Useful Info

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 $272 (return) on average. On the other hand, the most expensive months are March and November, where the average cost of round-trip tickets is $646 and $556 respectively.

Find deals

Good to know

Low seasonAugust
High seasonApril
Cheapest flight$184
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 20% 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 $184 for a one-way ticket and $297 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.

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 4287 reviews
7.1Food
8.0Comfort
7.6Entertainment
8.2Boarding
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

It is southwest seat was ok. Not the most comfortable seat

Plz don't take away free bags and free seating

Excellent! Only question is how we check in at exactly 24 hours in advance and end up at the end of the B boarding group

It was 2 hours 45 minutes late, for no apparently clear reason.

It went well. Plane wasn't full. Will be great when assigned seating is in place

Excellent experience. WiFi worked on this leg of My trip

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

Information on your arrival and departure airports

Islip (ISP)
Jacksonville (JAX)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.