The cheapest times to fly from ATL to ISP are

  • January 1st to March 4th
  • April 9th to May 13th (except the week of April 16th)
  • August 6th to November 18th (except the weeks of August 20th, August 27th, and October 1st)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ATL to ISP is early December. Prices can be as high as $532 for Sunday flights during mid to late November, or as low as $174 for Wednesday flights around early December.


When to Fly to Islip

Flying from Atlanta, GA (ATL) to Islip, NY (ISP) will usually cost between $189 to $422 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early December with an average ticket price of $189. Due to high demand the most expensive time to fly is mid to late November, with an average price of $388. Planning your trip to low-cost times can easily save you $199 on economy flights and even more on first-class flights. Generally, any price below $238 can be considered a good price for a round-trip ATL to ISP flight.

See below for a graph of average weekly prices for the ATL to ISP route. All prices are for round-trip tickets in USD.

ATL to ISP Flight Prices

Compared to other flights, the ATL to ISP flight is much cheaper than the average and costs much less than the average flight leaving from Atlanta. The average price per mile (for a direct flight) is $0.19, which is below average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $100 (31%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $223. Return trip prices are from the ISP to ATL flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ATL to ISP can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 2 hour 25 minutes may be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from ATL to ISP while comparing.

Destination alternative #1: LaGuardia Airport (LGA) in New York, NY

  • 40 miles (64 km) away from ISP
  • Usually 17.02% less expensive than ISP
  • Nonstop flights available

See ATL to LGA flights

Destination alternative #2: John F. Kennedy International Airport (JFK) in New York, NY

  • 37 miles (60 km) away from ISP
  • Usually 12.61% less expensive than ISP
  • Nonstop flights available

See ATL to JFK flights

Destination alternative #3: Newark Liberty International Airport (EWR) in Newark, NJ

  • 56 miles (90 km) away from ISP
  • Usually 6.51% less expensive than ISP
  • Nonstop flights available

See ATL to EWR flights

Destination alternative #4: Philadelphia International Airport (PHL) in Philadelphia, PA

  • 130 miles (209 km) away from ISP
  • Usually 4.62% less expensive than ISP
  • Nonstop flights available

See ATL to PHL flights

Destination alternative #5: Worcester Regional Airport (ORH) in Worcester, MA

  • 120 miles (193 km) away from ISP
  • Usually 3.36% less expensive than ISP
  • 1-layover flights available

See ATL to ORH flights


Flight Questions Answered

Still have questions about flying from ATL to ISP? We’ve got answers.

Which airlines fly this route?

You can find 3 major airlines flying this route most often: American, Frontier, Southwest, and potentially more during busy seasons.

How far away is it from Long Island MacArthur Airport to Hartsfield-Jackson Atlanta International Airport?

The distance between the two airports is roughly 794 miles or 1278 kilometers.

How long does it take to fly from ATL to ISP?

The real-world flight time for a nonstop ATL to ISP flight is about 2 hour 25 minutes.

How many flights go between Atlanta, GA and Islip, NY?

It depends on the day of the week and the date, but a typical day might have around 78 available flights from ATL to ISP.


Airport Location Info


Departing Airport

Origination code ATL
Origination airport name Hartsfield-Jackson Atlanta International Airport
City Atlanta, GA
Country the United States
Latitude 33.6
Longitude -84.4

Return Airport

Destination code ISP
Destination airport name Long Island MacArthur Airport
City Islip, NY
Country the United States
Latitude 40.8
Longitude -73.1


Late and Early Flight Data

Flights from ATL to ISP tend to depart later than the average flight. According to our recently updated data, 39% of flights departed 5 or more minutes late, and 28% of flights left 5 or more minutes early. On average you can expect to leave ISP heading for ATL about 23 minutes late. This does significantly impact arrival time, as the average landing time in Islip, NY is about 16 minutes late. The numbers below show a recent average of take-off times versus the scheduled departure flight:

  • Frontier: 23 minutes late
  • Some airlines not reporting


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.