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

Currently priced at $355, Southwest will fly you from Islip, New York to Jacksonville and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Breeze Airways for as low as $707. Southwest is 18% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Islip, New York to Jacksonville one-way?

$130 is the cheapest one-way deal found within the past few days, from Breeze Airways. You may also be able to find cheap deals on Southwest and JetBlue, with prices starting from $152 and $437, respectively.

What is the cheapest day to fly from Islip, New York to Jacksonville?

Travelers seeking maximum savings on their Islip, New York to Jacksonville flight should consider departing on Sunday afternoons when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Monday flights are found to be more expensive to fly from Islip, New York to Jacksonville. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Jacksonville.

How far in advance should I book a flight from Islip, New York to Jacksonville?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 59 days in advance, which can save you up to 83% on flights from Islip, New York to Jacksonville compared to booking the week you need them. Waiting 59 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $277. For sooner than that we have options available in the next 3 days from $486.

What is the cheapest month to fly from Islip, New York to Jacksonville?

The best pricing can be found in the month of January. Prices to Jacksonville from Islip, New York average $290. You can even find prices in January for less than $290, as users have found deals to Jacksonville from as low as $88. The month of December appears to be one of the more expensive times to travel to Jacksonville from Islip, New York. Flying in the targeted month can save you up to 30%.

Most accurate provider : When it comes to deals on Islip, New York-Jacksonville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Jacksonville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Jacksonville flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Islip, New York-Jacksonville flights, Cheapflights users trust FlightHub the most. FlightHub 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 Islip, New York-Jacksonville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Islip to Jacksonville?

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

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

Yes. Cheapflights offers flight deals from Islip to Jacksonville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$130+ Save on Flights from Islip, NY to Jacksonville

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheap flight deals from Islip to Jacksonville

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$355 (Southwest)
One-way from	$130 (CheapOair)
Popular in	March
Cheapest in	August
Average price	$646

Provider with most accurate pricing for Islip Long Island-Jacksonville flight deals.

Search Deals

Provider most trusted by Cheapflights users for Islip Long Island-Jacksonville flights.

Search Deals

From Islip Long Island to Jacksonville

Search Deals

One-way flight from Islip Long Island to Jacksonville

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($30 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

Search Deals

Find flight deals from Islip to Jacksonville

Cheapest flights from Islip to Jacksonville
Explore the most affordable flight options available from Islip to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Fri 10/176:00 amISP - JAX

1 stop5h 54mJetBlue

Sun 10/1912:45 pmJAX - ISP

1 stop8h 55mJetBlue

Deal found 3/24

$307

Tue 7/81:40 pmISP - JAX

2 stops8h 40mSouthwest

Thu 7/176:05 amJAX - ISP

2 stops8h 40mSouthwest

Deal found 3/24

$387

Tue 5/271:52 pmISP - JAX

1 stop20h 01mBreeze Airways

Thu 5/299:28 amJAX - ISP

1 stop9h 31mBreeze Airways

Deal found 3/24

$698

Thu 3/2712:56 pmISP - JAX

2 stops21h 08mMultiple Airlines

Sat 3/299:32 pmJAX - ISP

1 stop12h 39mMultiple Airlines

Deal found 3/23

$832

Best flights from Islip to Jacksonville
Discover carefully curated flight deals from Islip to Jacksonville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 25, 2025.

Fri 5/1610:30 amISP - JAX

1 stop7h 00mSouthwest

Mon 5/196:30 amJAX - ISP

1 stop4h 40mSouthwest

Deal found 3/23

$355

Tue 5/271:52 pmISP - JAX

1 stop20h 01mBreeze Airways

Thu 5/299:28 amJAX - ISP

1 stop9h 31mBreeze Airways

Deal found 3/24

$707

Thu 3/2712:56 pmISP - JAX

2 stops21h 08mMultiple Airlines

Sat 3/299:32 pmJAX - ISP

1 stop12h 39mMultiple Airlines

Deal found 3/23

$822

Last-minute flights from Islip to Jacksonville
Discover last-minute flight deals from Islip to Jacksonville. Data last updated March 25, 2025 and is based on user searches.

Thu 3/2712:56 pmISP - JAX

2 stops21h 08mMultiple Airlines

Sat 3/299:32 pmJAX - ISP

1 stop12h 39mMultiple Airlines

Deal found 3/23

$822

Wed 4/29:40 amISP - JAX

1 stop5h 55mSouthwest

Wed 4/95:50 pmJAX - ISP

1 stop5h 00mSouthwest

Deal found 3/23

$537

Wed 4/26:20 pmISP - JAX

2 stops20h 21mMultiple Airlines

Wed 4/99:32 pmJAX - ISP

3 stops38h 44mMultiple Airlines

Deal found 3/23

$940

Wed 4/22:35 pmISP - JAX

3 stops48h 03mBreeze Airways

Wed 4/99:32 pmJAX - ISP

3 stops38h 44mBreeze Airways

Deal found 3/23

$1,092

Sun 4/205:45 amISP - JAX

1 stop4h 30mSouthwest

Sun 4/276:45 amJAX - ISP

1 stop5h 05mSouthwest

Deal found 3/23

$390

Fri 4/2512:56 pmISP - JAX

1 stop5h 21mBreeze Airways

Sat 4/269:32 pmJAX - ISP

1 stop12h 39mBreeze Airways

Deal found 3/23

$845

One-way flights from Islip to Jacksonville
Search for one-way flight options from Islip to Jacksonville. Find affordable one-way fares based on user searches. Data last updated March 25, 2025.

Mon 4/2812:56 pmISP - JAX

1 stop5h 21mBreeze Airways

Deal found 3/23

$130

Wed 4/306:10 amISP - JAX

1 stop4h 45mSouthwest

Deal found 3/23

$152

Fri 4/1110:39 amISP - JAX

1 stop8h 10mJetBlue

Deal found 3/24

$437

Wed 4/307:19 pmISP - JAX

3 stops40h 12mMultiple Airlines

Deal found 3/23

$564

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Jacksonville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Fri 5/16

10:30 am-5:30 pm

1 stop7h 00m

Jacksonville

Mon 5/19

6:30 am-11:10 am

1 stop4h 40m

$355

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Tue 5/27

1:52 pm-9:53 am

1 stop20h 01m

Jacksonville

Thu 5/29

9:28 am-6:59 pm

1 stop9h 31m

$707

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Thu 3/27

12:56 pm-10:04 am

2 stops21h 08m

Jacksonville

Sat 3/29

9:32 pm-10:11 am

1 stop12h 39m

$822

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Mon 4/28

12:56 pm-6:17 pm

1 stop5h 21m

$130

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Wed 4/30

6:10 am-10:55 am

1 stop4h 45m

$152

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Fri 4/11

10:39 am-6:49 pm

1 stop8h 10m

$437

IslipJacksonville

ISP - JAX

ISPJAX

Islip Long Island

Wed 4/30

7:19 pm-11:31 am

3 stops40h 12m

$564

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Compare providers for flights from Islip to Jacksonville

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Islip to Jacksonville in March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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 Islip, New York-Jacksonville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Islip, New York-Jacksonville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Islip, New York-Jacksonville flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Islip, New York-Jacksonville flights, Cheapflights users trust FlightHub the most. FlightHub 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 Islip, New York-Jacksonville 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 Islip to Jacksonville

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

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

Currently, August is the cheapest month in which you can book a flight from Islip, New York to Jacksonville (average of $278). Flying from Islip, New York to Jacksonville in March is currently the most expensive (average of $365). 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 ISP to JAX?

A simple way to save on the total cost of your ticket is to fly from Islip, New York to Jacksonville at noon. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight in the evening.

Rainfall in Jacksonville by month

In terms of precipitation, rainfall in Jacksonville ranges from 2.1 - 8.2 inches per month. September is typically the wettest month, when rainfall can reach 8.2 in. November is typically the driest time to visit Jacksonville when rainfall is around 2.1 in.

Temperature in Jacksonville by month

If weather is an important factor for your trip to Jacksonville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Jacksonville

See what other customers who have flown with Southwest, Breeze Airways and JetBlue from Islip to Jacksonville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

8.0

Very good

4,272 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Breeze Airways

8.0

Very good

156 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

JetBlue

7.3

Good

2,924 reviews

Southwest

8.0

Very good

4,272 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What are the cheapest airlines flying from Islip, New York to Jacksonville round-trip?
Currently priced at $355, Southwest will fly you from Islip, New York to Jacksonville and back. In addition to Southwest, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Breeze Airways for as low as $707. Southwest is 18% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Islip, New York to Jacksonville one-way?
$130 is the cheapest one-way deal found within the past few days, from Breeze Airways. You may also be able to find cheap deals on Southwest and JetBlue, with prices starting from $152 and $437, respectively.
Can I find deals for flights from Islip to Jacksonville that include hotel bookings?
Yes. In addition to deals on Islip to Jacksonville flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Islip to Jacksonville?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Islip to Jacksonville.
Can I find deals for business class flights from Islip to Jacksonville?
Yes. Cheapflights offers flight deals from Islip to Jacksonville 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 Islip, New York to Jacksonville?
Currently, August is the cheapest month in which you can book a flight from Islip, New York to Jacksonville (average of $278). Flying from Islip, New York to Jacksonville in March is currently the most expensive (average of $365). 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

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Waycross

Fernandina Beach

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Top airline flying from Islip to Jacksonville

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$334	Average$426	FlexibilityNo cancel fee	On-time63%

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$130+ Cheap flights from Islip, NY to Jacksonville (ISP - JAX)

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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Islip to Jacksonville with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Islip to Jacksonville

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Islip to Jacksonville

Cheapest flights from Islip to JacksonvilleExplore the most affordable flight options available from Islip to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Explore the most affordable flight options available from Islip to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Islip to Jacksonville that are best for you.

Compare providers for flights from Islip to Jacksonville

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 Islip to Jacksonville in March.

Best time to book a flight from Islip to Jacksonville

Have a flexible travel schedule? Discover the best time to fly to Jacksonville from Islip with our price prediction graph.

Cheapflights Insights

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

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

What is the cheapest time of day to fly from ISP to JAX?

Find hourly flight availability from Islip to Jacksonville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

Rainfall in Jacksonville by month

Plan your trip to Jacksonville by taking into account the average rainfall totals by month.

Temperature in Jacksonville by month

Plan your trip to Jacksonville by taking into account the average temperature totals by month.

Reviews of airlines servicing Jacksonville

See what other customers who have flown with Southwest, Breeze Airways and JetBlue from Islip to Jacksonville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Islip to Jacksonville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

What are the cheapest airlines to fly from Islip, New York to Jacksonville one-way?

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

How can I find direct flights from Islip to Jacksonville?

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

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

Traveling to a place near Islip?

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Alternative routes for Islip to Jacksonville

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Top airline flying from Islip to Jacksonville

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Cheapest flights from Islip to Jacksonville
Explore the most affordable flight options available from Islip to Jacksonville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.