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Islip

$72+ Cheap flights from Atlanta to Islip (ATL - 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — ISP
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap flight deals from Atlanta to Islip

Discover tips and strategies to find the most affordable flight options for your journey from Atlanta (ATL) 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 septiembre 11, 2025.

Round-trip from

$143
(Cheapflightsfares)

One-way from

$72
(CheapOair)

Popular in

April

Cheapest in

March

Average price

$281

Good one-way deal

$124 or less
From Atlanta Hartsfield-Jackson to Islip Long Island
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One-way flight from Atlanta Hartsfield-Jackson to Islip Long Island
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a one-way flight from Atlanta Hartsfield-Jackson to Islip Long Island.
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Find flight deals from Atlanta to Islip

Cheapest flights from Atlanta to Islip
Explore the most affordable flight options available from Atlanta to Islip. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/810:14 pmATL - ISP
1 stop10h 50mFrontier
mié. 10/1510:29 amISP - ATL
1 stop6h 29mFrontier
Deal found 9/10$143
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/186:45 amATL - ISP
1 stop26h 19mFrontier
dom. 9/219:49 amISP - ATL
1 stop14h 08mFrontier
Deal found 9/10$144
This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/2410:48 pmATL - ISP
1 stop11h 49mFrontier
lun. 10/274:58 pmISP - ATL
1 stop7h 43mFrontier
Deal found 9/11$146
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/1910:00 pmATL - ISP
1 stop18h 23mFrontier
sáb. 9/275:05 pmISP - ATL
1 stop6h 50mFrontier
Deal found 9/10$148
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/2411:51 amATL - ISP
1 stop23h 04mFrontier
sáb. 9/275:05 pmISP - ATL
1 stop6h 50mFrontier
Deal found 9/10$152
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/2910:29 pmATL - ISP
1 stop12h 11mFrontier
sáb. 10/114:58 pmISP - ATL
1 stop7h 20mFrontier
Deal found 9/9$154
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/2411:51 amATL - ISP
1 stop23h 04mFrontier
mié. 10/1510:29 amISP - ATL
1 stop6h 29mFrontier
Deal found 9/10$156
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/277:33 pmATL - ISP
1 stop13h 31mFrontier
dom. 9/2811:25 amISP - ATL
1 stop20h 24mFrontier
Deal found 9/10$161
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/2010:00 pmATL - ISP
1 stop11h 04mFrontier
dom. 9/215:12 pmISP - ATL
1 stop6h 45mFrontier
Deal found 9/10$165
This CheapOair deal was found by Cheapflights users on 9/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/268:54 amATL - ISP
1 stop26h 01mFrontier
dom. 9/289:49 amISP - ATL
1 stop14h 08mFrontier
Deal found 9/10$167
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/1711:51 amATL - ISP
1 stop23h 04mFrontier
dom. 9/219:49 amISP - ATL
1 stop21h 58mFrontier
Deal found 9/11$169
This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/1711:51 amATL - ISP
1 stop23h 04mFrontier
sáb. 9/205:18 pmISP - ATL
1 stop6h 41mFrontier
Deal found 9/11$170

Cheapflights Fare Finder

 
Customize your flight search to find flights from Atlanta 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 septiembre 11, 2025.
Use the filters below to find and compare flights from Atlanta to Islip that are best for you.

Fly from

Atlanta

Fly to

Islip

Route

Depart

Return

Price

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

sáb. 10/11

4:48 pm-8:59 am

1 stop16h 11m

Islip Long Island

mar. 10/14

9:37 pm-12:47 pm

1 stop15h 10m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

jue. 10/2

6:45 am-9:04 am

1 stop26h 19m

Islip Long Island

vie. 10/3

5:12 pm-9:12 am

1 stop16h 00m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

sáb. 10/4

10:00 pm-9:04 am

1 stop11h 04m

Islip Long Island

lun. 10/6

2:32 pm-6:57 am

1 stop16h 25m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

jue. 11/13

10:10 pm-8:54 am

1 stop10h 44m

Islip Long Island

dom. 11/16

9:27 pm-7:11 am

1 stop9h 44m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

vie. 10/24

10:48 pm-10:37 am

1 stop11h 49m

Islip Long Island

dom. 10/26

9:47 pm-12:41 am

1 stop26h 54m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

mar. 10/7

10:14 pm-2:13 pm

1 stop15h 59m

Islip Long Island

mar. 10/14

9:37 pm-12:47 pm

1 stop15h 10m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

mié. 10/15

10:14 pm-9:04 am

1 stop10h 50m

Islip Long Island

lun. 10/20

9:49 am-9:26 am

1 stop23h 37m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

sáb. 9/27

7:33 pm-9:04 am

1 stop13h 31m

Islip Long Island

mar. 9/30

11:25 am-8:01 pm

1 stop8h 36m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

vie. 10/17

4:34 pm-11:53 am

1 stop19h 19m

Islip Long Island

dom. 10/19

9:47 pm-9:48 pm

1 stop24h 01m

$144

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

vie. 10/17

10:48 pm-10:37 am

1 stop11h 49m

Islip Long Island

lun. 10/20

4:58 pm-12:47 pm

1 stop19h 49m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 22 results
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Best time to book a flight from Atlanta to Islip

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

What is the cheapest month to book a flight from Atlanta to Islip?

Currently, January is the cheapest month in which you can book a flight from Atlanta to Islip (average of $108). Flying from Atlanta to Islip 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 ATL to ISP?

Find hourly flight availability from Atlanta 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 septiembre 11, 2025.

A simple way to save on the total cost of your ticket is to fly from Atlanta to Islip in the morning. If you’re flexible enough to do this you can expect to save up to 43% on your trip compared to booking a flight at noon.

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 septiembre 11, 2025.
Get a feel of what it's like to fly with Southwest and Frontier from Atlanta 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
4,248 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,177 reviews
Southwest
8.0
Very good
4,248 reviews

Crew

8.6

Boarding

8.1

Entertainment

7.5

Overall

8.0

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

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

  • How long is the flight from Atlanta to Islip?

    There are many flights that can get you from Atlanta to Islip in 16h 11m. Fly via Frontier to get the fastest option. The distance between Atlanta and Islip is about 793 mi.

  • What are the cheapest airlines flying from Atlanta to Islip round-trip?

    Flying on Frontier is currently your cheapest option to Islip, with prices starting at $59. Another option worth looking into is Southwest, starting at $301 round trip. Users have found that Frontier is 82% cheaper than the other options available to this destination.

  • What are the cheapest flights from Atlanta to Islip?

    While on average a flight from Atlanta to Islip is generally $124, our data shows the cheapest flight currently is $124. When looking at the most popular route, (Atlanta Hartsfield-Jackson - Islip Long Island), you can expect to pay $144 for that flight.

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

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

  • How can I find direct flights from Atlanta to Islip?

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

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

    Yes. Cheapflights offers flight deals from Atlanta 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 Atlanta to Islip?

    Currently, January is the cheapest month in which you can book a flight from Atlanta to Islip (average of $108). Flying from Atlanta to Islip 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 Atlanta to Islip

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Atlanta to Islip

Discover the top 2 airlines that operate flights from Atlanta 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$59Average$226FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$301Average$399FlexibilityNo cancel feeOn-time63%

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