ATL - ISP

$76 Find Cheap Flights from Atlanta to Islip

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Atlanta to Islip departing on 4/19. 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 Islip

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Atlanta to Islip, 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 Atlanta to Islip, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$140
Overall average: $671
Frontier
Sat 4/18Mon 4/20
ATL - ISP • 1 stop
Cheapest one-way
$76
Typical prices: $147-$186
Frontier
Sun 4/19
ATL - ISP • 1 stop
Top airlines
Cheapest • from $140 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Atlanta and Islip. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $149 (round-trip)
Shortest trip • 4h 23m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 80% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Islip!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Atlanta to Islip (ATL-ISP)

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

Sat, Apr 18 - Mon, Apr 20
Frontier Logo
12:00 pm - 9:13 am
ATL
-
ISP
21h 13m
1 stop
Frontier Logo
4:07 pm - 4:32 pm
ISP
-
ATL
24h 25m
1 stop
$140Frontier
Tue, May 5 - Tue, May 12
Frontier Logo
12:39 pm - 10:05 am
ATL
-
ISP
21h 26m
1 stop
Frontier Logo
5:38 pm - 11:44 am
ISP
-
ATL
18h 06m
1 stop
$160Frontier
Thu, Apr 30 - Tue, May 5
Frontier Logo
6:00 am - 9:13 am
ATL
-
ISP
27h 13m
1 stop
Frontier Logo
5:38 pm - 4:58 pm
ISP
-
ATL
23h 20m
1 stop
$180Frontier
Wed, Apr 8 - Sun, Apr 12
Frontier Logo
8:23 am - 8:52 pm
ATL
-
ISP
12h 29m
1 stop
Frontier Logo
7:59 pm - 9:35 pm
ISP
-
ATL
25h 36m
1 stop
$181Frontier
Wed, Apr 1 - Tue, Apr 7
Frontier Logo
10:02 am - 7:59 pm
ATL
-
ISP
9h 57m
1 stop
Frontier Logo
5:43 pm - 5:12 pm
ISP
-
ATL
23h 29m
1 stop
$201Frontier
Wed, Apr 1 - Tue, Apr 7
Frontier Logo
10:45 pm - 3:10 pm
ATL
-
ISP
16h 25m
1 stop
Frontier Logo
5:43 pm - 11:40 pm
ISP
-
ATL
5h 57m
1 stop
$205Frontier
Wed, Jun 10 - Thu, Jun 18
Frontier Logo
8:16 am - 10:03 am
ATL
-
ISP
25h 47m
1 stop
Frontier Logo
10:48 am - 11:44 am
ISP
-
ATL
24h 56m
1 stop
$210Frontier
Sat, May 16 - Sun, May 17
Multiple Airlines Logo
6:35 am - 11:17 am
ATL
-
ISP
4h 42m
1 stop
Multiple Airlines Logo
11:00 am - 11:15 am
ISP
-
ATL
24h 15m
2 stops
$214Multiple Airlines
Sun, Apr 5 - Sun, Apr 12
Frontier Logo
6:20 am - 1:38 am
ATL
-
ISP
19h 18m
1 stop
Frontier Logo
7:59 pm - 11:40 pm
ISP
-
ATL
27h 41m
1 stop
$215Frontier
Fri, Apr 3 - Sun, Apr 5
Frontier Logo
6:00 am - 12:23 am
ATL
-
ISP
18h 23m
1 stop
Frontier Logo
7:59 pm - 9:36 pm
ISP
-
ATL
25h 37m
1 stop
$220Frontier
Booking Insights

KAYAK's insights & trends for Atlanta to Islip flights

Get data-powered insights and trends into flights from Atlanta to Islip to help you find the cheapest flights, the best time to fly and much more.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Atlanta to Islip, 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 Atlanta to Islip is February, where tickets cost $58 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $671 and $434 respectively.

Good to know

Low seasonJanuary
Cheapest flight$76
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 46% increase in price.
Flight from Atlanta to Islip

When to book flights from Atlanta to Islip

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

  • What is the cheapest flight from Atlanta to Islip?

    In the last 3 days, the lowest price for a flight from Atlanta to Islip was $76 for a one-way ticket and $140 for a round-trip.

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

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

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

    Atlanta and Islip are both served by 1 main airport. You will leave Atlanta from Atlanta Hartsfield-Jackson and will be arriving at Islip Long Island.

  • Which airlines offer Wi-Fi service onboard planes from Atlanta to Islip?

    Only JetBlue offers inflight Wi-Fi service on the Atlanta to Islip flight route.

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

    The Airbus A320neo is the aircraft model that flies most regularly on the Atlanta to Islip flight route.

  • Which is the best airline for flights from Atlanta to Islip, Southwest or Frontier?

    The two airlines most popular with KAYAK users for flights from Atlanta to Islip are Southwest and Frontier. With an average price for the route of $417 and an overall rating of 8.0, Southwest is the most popular choice. Frontier is also a great choice for the route, with an average price of $178 and an overall rating of 5.7.

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

    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 Atlanta to Islip.

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

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

    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 Islip with an airline and back to Atlanta with another airline. Booking your flights between Atlanta and ISP 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 Atlanta to Islip?

    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 Islip from Atlanta up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Atlanta to Islip

 
See real verified KAYAK customer reviews for airlines flying from Atlanta to Islip. 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 Atlanta to Islip? 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 4325 reviews
7.5Entertainment
7.0Food
8.0Comfort
8.1Boarding
8.6Crew
Airline reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

10.0 ExcellentMartie, Mar 2026
LGB - BNA
Read more Southwest reviews

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

I flew twice this week on Southwest, was delayed over 2 hours both ways. From Pittsburgh to Chicago it was due to weather but the gate agents, pilot etc were great at updating everyone. Today from Midway to Pittsburgh the plane had come from an international location, kept getting delayed, no information was given until we were delayed for the third time. It was ridiculous, whoever scheduled that plane to fly to Pittsburgh after didn’t consider a lot of things.

Boarding was easy. The seats are small and fairly uncomfortable

I was supposed to be on a later flight. When I showed up at the gate, the woman working there was extremely helpful getting moved up to this earlier flight.

We had a 5 hour delay on the tarmac in Baltimore

Long layover between flights to Long Island from BWI - need better coordination between flights

I elected to pay for the upgrades and found very little difference

The new seating arrangement is so over priced for what you get.

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

No food or entertainment, just a quick 40 minute flight. A little bumpy due to Santa Ana winds but pilot has no control over that. Good flight and landing!

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

This is my second time flying with Frontier. My current experience was very favorable. The staff from the gate to the plane was friendly, warm and professional. The food options lacked in my opinion. This area needs some attention in my opinion.

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

Information on your arrival and departure airports