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Islip

$65+ Cheap flights from Atlanta to Islip, NY (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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
ATL — ISP
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap 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 December 12, 2025.

This CheapOair deal was found by Cheapflights users on 12/11. 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.
Sun 12/285:55 amATL - ISP
1 stop7h 14mFrontier
Tue 1/138:00 amISP - ATL
1 stop13h 43mFrontier
Deal found 12/11$164
This CheapOair deal was found by Cheapflights users on 12/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:55 amATL - ISP
1 stop10h 42mFrontier
Thu 1/16:00 amISP - ATL
1 stop25h 31mFrontier
Deal found 12/9$165
This Frontier deal was found by Cheapflights users on 12/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:40 amATL - ISP
1 stop7h 29mFrontier
Sat 1/107:56 pmISP - ATL
1 stop11h 11mFrontier
Deal found 12/11$183
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Mon 12/295:40 amATL - ISP
1 stop7h 29mFrontier
Mon 1/58:24 pmISP - ATL
1 stop10h 49mFrontier
Deal found 12/11$184
This Frontier deal was found by Cheapflights users on 12/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/215:55 amATL - ISP
1 stop7h 14mFrontier
Sat 1/107:56 pmISP - ATL
1 stop11h 11mFrontier
Deal found 12/11$187
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Wed 12/174:40 pmATL - ISP
1 stop6h 04mFrontier
Thu 12/186:00 amISP - ATL
1 stop25h 31mFrontier
Deal found 12/10$188
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Sat 12/2010:50 pmATL - ISP
1 stop25h 09mFrontier
Sun 1/48:24 pmISP - ATL
1 stop13h 59mFrontier
Deal found 12/11$189
This CheapOair deal was found by Cheapflights users on 12/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:50 pmATL - ISP
1 stop17h 47mFrontier
Sun 1/48:24 pmISP - ATL
1 stop10h 38mFrontier
Deal found 12/9$198
This CheapOair deal was found by Cheapflights users on 12/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/285:55 amATL - ISP
1 stop7h 14mFrontier
Sun 1/48:24 pmISP - ATL
1 stop10h 38mFrontier
Deal found 12/9$199
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Mon 12/2910:50 pmATL - ISP
1 stop12h 35mFrontier
Fri 1/26:00 amISP - ATL
1 stop25h 41mFrontier
Deal found 12/10$209
This CheapOair deal was found by Cheapflights users on 12/11. 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.
Sat 12/2010:50 pmATL - ISP
1 stop14h 19mFrontier
Sun 12/218:35 pmISP - ATL
1 stop10h 27mFrontier
Deal found 12/11$213
This CheapOair deal was found by Cheapflights users on 12/10. 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.
Tue 12/3010:50 pmATL - ISP
1 stop17h 47mFrontier
Thu 1/112:20 pmISP - ATL
1 stop22h 24mFrontier
Deal found 12/10$214

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$125
(Kiwi.com)

One-way from

$65
(CheapOair)

Popular in

April

Cheapest in

September

Average price

$276

Good one-way deal

$124 or less
Provider with most accurate pricing for Atlanta Hartsfield-Jackson-Islip Long Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Atlanta Hartsfield-Jackson-Islip Long Island flights.
Search Deals
From Atlanta Hartsfield-Jackson to Islip Long Island
Search Deals
One-way flight from Atlanta Hartsfield-Jackson to Islip Long Island
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($17 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a one-way flight from Atlanta Hartsfield-Jackson to Islip Long Island.
Search Deals

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 December 12, 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

Wed 1/7

10:46 pm-7:45 pm

1 stop20h 59m

Islip Long Island

Thu 1/15

7:58 pm-6:59 am

1 stop11h 01m

$132

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Sat 1/10

8:17 am-7:08 pm

1 stop10h 51m

Islip Long Island

Sat 1/17

8:00 am-3:32 pm

1 stop7h 32m

$139

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Wed 2/25

7:10 pm-4:22 pm

1 stop21h 12m

Islip Long Island

Wed 3/4

2:03 pm-7:04 am

1 stop17h 01m

$146

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Fri 1/30

8:58 am-8:47 pm

2 stops11h 49m

Islip Long Island

Mon 2/2

7:43 pm-7:58 am

1 stop12h 15m

$159

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Sat 2/7

7:56 pm-8:40 am

1 stop12h 44m

Islip Long Island

Wed 2/25

2:03 pm-2:33 pm

1 stop24h 30m

$163

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Wed 12/31

8:12 am-4:37 pm

1 stop8h 25m

Islip Long Island

Wed 1/14

8:00 am-9:43 pm

1 stop13h 43m

$164

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Sun 12/28

5:55 am-1:09 pm

1 stop7h 14m

Islip Long Island

Tue 1/13

8:00 am-9:43 pm

1 stop13h 43m

$164

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Wed 12/31

5:55 am-4:37 pm

1 stop10h 42m

Islip Long Island

Thu 1/1

6:00 am-7:31 am

1 stop25h 31m

$165

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Sat 1/10

10:46 pm-7:45 pm

1 stop20h 59m

Islip Long Island

Sat 1/17

6:47 pm-7:04 am

1 stop12h 17m

$182

AtlantaIslip

ATL - ISP

ATLISP

Atlanta Hartsfield-Jackson

Tue 12/30

10:50 pm-4:37 pm

1 stop17h 47m

Islip Long Island

Fri 1/2

6:00 am-7:41 am

1 stop25h 41m

$188

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 19 results
1
2

Compare providers for flights from Atlanta to Islip

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 Atlanta to Islip in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust 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 Atlanta-Islip, New York flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Atlanta-Islip, New York flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Atlanta-Islip, New York flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Atlanta-Islip, New York flights, Cheapflights users trust eDreams the most. eDreams 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 Atlanta-Islip, New York 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 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, New York?

Currently, October is the cheapest month in which you can book a flight from Atlanta to Islip, New York (average of $20). Flying from Atlanta to Islip, New York in July is currently the most expensive (average of $88). 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 December 12, 2025.

A simple way to save on the total cost of your ticket is to fly from Atlanta to Islip, New York in the afternoon. If you’re flexible enough to do this you can expect to save up to 86% 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 December 12, 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
7.9
Good
4,252 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,252 reviews
Southwest
7.9
Good
4,252 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,084 reviews
Southwest
7.9
Good
4,252 reviews

Comfort

8.0

Boarding

8.1

Food

7.0

Crew

8.6

Entertainment

7.5

Overall

7.9

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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, New York?

    Frontier can get you from Atlanta to Islip, New York in just under 20h 59m. Your travel time can differ by up to . The distance between Atlanta and Islip, New York is about 793 mi.

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

    Flying on Frontier is currently your cheapest option to Islip, New York, with prices starting at $57. Another option worth looking into is Southwest, starting at $286 round trip. You may be able to fly from Atlanta to Islip, New York for 81% less than the average price by searching for these airlines.

  • What are the cheapest flights from Atlanta to Islip, New York?

    While on average a flight from Atlanta to Islip, New York 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 $125 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, New York?

    Currently, October is the cheapest month in which you can book a flight from Atlanta to Islip, New York (average of $20). Flying from Atlanta to Islip, New York in July is currently the most expensive (average of $88). 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

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$57Average$207FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$286Average$401FlexibilityNo cancel feeOn-time63%

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