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Flights from Islip to Atlanta

Search cheap flights from Islip to Atlanta in the next 3 months. Based on Trip.com's latest 7-day data, one-way fares start at DKK 399, and round-trip tickets start at DKK 1,096.

      • ISP 10:19
        7h 42m
        1 stop
        ATL 18:01
        Islip - Atlanta | Sat, Dec 13 | Frontier Airlines
        ATL 16:40
        6h 4m
        1 stop
        ISP 22:44
        Atlanta - Islip | Wed, Dec 17 | Frontier Airlines
        DKK 1,096 DKK 1,934
        43% OFF
        43% OFF
        DKK 1,934 DKK 1,096
      • ISP 19:58
        11h 1m
        1 stop
        ATL 06:59
        Islip - Atlanta | Thu, Jan 15 | Frontier Airlines
        ATL 08:24
        10h 24m
        1 stop
        ISP 18:48
        Atlanta - Islip | Thu, Jan 22 | Frontier Airlines
        DKK 1,222 DKK 1,934
        37% OFF
        37% OFF
        DKK 1,934 DKK 1,222
      • ISP 12:55
        8h 46m
        1 stop
        ATL 21:41
        Islip - Atlanta | Tue, Jan 6 | Frontier Airlines
        ATL 08:17
        10h 51m
        1 stop
        ISP 19:08
        Atlanta - Islip | Sat, Jan 10 | Frontier Airlines
        DKK 1,277 DKK 1,934
        34% OFF
        34% OFF
        DKK 1,934 DKK 1,277
      • ISP 10:19
        11h 22m
        1 stop
        ATL 21:41
        Islip - Atlanta | Mon, Dec 15 | Frontier Airlines
        ATL 06:00
        6h 42m
        1 stop
        ISP 12:42
        Atlanta - Islip | Fri, Dec 19 | Frontier Airlines
        DKK 1,303
        33% OFF
        DKK 1,934 DKK 1,303
      • ISP 20:29
        17h 14m
        1 stop
        ATL 13:43
        Islip - Atlanta | Fri, Dec 12 | Frontier Airlines
        ATL 22:46
        20h 48m
        1 stop
        ISP 19:34
        Atlanta - Islip | Mon, Dec 15 | Frontier Airlines
        DKK 1,340
        31% OFF
        DKK 1,934 DKK 1,340
      • ISP 06:00
        15h 33m
        1 stop
        ATL 21:33
        Islip - Atlanta | Wed, Dec 10 | Frontier Airlines
        ATL 22:40
        25h 19m
        1 stop
        ISP 23:59
        Atlanta - Islip | Sun, Dec 14 | Frontier Airlines
        DKK 1,343
        31% OFF
        DKK 1,934 DKK 1,343
      • ISP 13:27
        7h 58m
        1 stop
        ATL 21:25
        Islip - Atlanta | Fri, Dec 19 | Frontier Airlines
        ATL 05:40
        7h 29m
        1 stop
        ISP 13:09
        Atlanta - Islip | Mon, Dec 22 | Frontier Airlines
        DKK 1,452
        25% OFF
        DKK 1,934 DKK 1,452
      • ISP 06:15
        25h 16m
        1 stop
        ATL 07:31
        Islip - Atlanta | Sun, Dec 21 | Frontier Airlines
        ATL 22:50
        24h 41m
        1 stop
        ISP 23:31
        Atlanta - Islip | Wed, Dec 24 | Frontier Airlines
        DKK 1,457
        25% OFF
        DKK 1,934 DKK 1,457
      • ISP 10:00
        11h 41m
        1 stop
        ATL 21:41
        Islip - Atlanta | Tue, Jan 6 | Jetblue Airways
        ATL 22:46
        10h 6m
        1 stop
        ISP 08:52
        Atlanta - Islip | Sat, Jan 10 | Frontier Airlines
        DKK 1,653
        15% OFF
        DKK 1,934 DKK 1,653
      • ISP 10:45
        11h 14m
        1 stop
        ATL 21:59
        Islip - Atlanta | Sat, Dec 13 | Jetblue Airways
        ATL 08:39
        25h 16m
        1 stop
        ISP 09:55
        Atlanta - Islip | Sun, Dec 14 | Spirit Airlines
        DKK 1,722
        11% OFF
        DKK 1,934 DKK 1,722
      • ISP 13:00
        17h 25m
        1 stop
        ATL Invalid Date
        Islip - Atlanta | Fri, Dec 12 | Normal Airline
        ATL 15:00
        6h
        Nonstop
        ISP 16:00
        Atlanta - Islip | Sun, Dec 14 | Normal Airline
        Find More Flights
        Find More Flights
      • ISP 06:00
        15h 42m
        1 stop
        ATL 21:42
        Islip - Atlanta | Sat, Jan 10 | Frontier Airlines
        DKK 399 DKK 842
        53% OFF
        53% OFF
        DKK 842 DKK 399
      • ISP 15:34
        15h 58m
        1 stop
        ATL 07:32
        Islip - Atlanta | Sun, Jan 11 | Frontier Airlines
        DKK 404 DKK 842
        52% OFF
        52% OFF
        DKK 842 DKK 404
      • ISP 20:54
        24h 51m
        1 stop
        ATL 21:45
        Islip - Atlanta | Fri, Jan 16 | Frontier Airlines
        DKK 566 DKK 842
        33% OFF
        33% OFF
        DKK 842 DKK 566
      • ISP 12:37
        18h 54m
        1 stop
        ATL 07:31
        Islip - Atlanta | Wed, Dec 10 | Frontier Airlines
        DKK 585
        31% OFF
        DKK 842 DKK 585
      • ISP 06:15
        15h 25m
        1 stop
        ATL 21:40
        Islip - Atlanta | Sun, Dec 21 | Frontier Airlines
        DKK 590
        30% OFF
        DKK 842 DKK 590
      • ISP 10:19
        11h 22m
        1 stop
        ATL 21:41
        Islip - Atlanta | Mon, Dec 15 | Frontier Airlines
        DKK 633
        25% OFF
        DKK 842 DKK 633
      • ISP 19:43
        12h 15m
        1 stop
        ATL 07:58
        Islip - Atlanta | Mon, Jan 26 | Frontier Airlines
        DKK 642
        24% OFF
        DKK 842 DKK 642
      • ISP 11:00
        10h 42m
        1 stop
        ATL 21:42
        Islip - Atlanta | Sat, Jan 10 | Jetblue Airways
        DKK 659
        22% OFF
        DKK 842 DKK 659
      • ISP 11:00
        20h 4m
        1 stop
        ATL 07:04
        Islip - Atlanta | Wed, Jan 14 | Jetblue Airways
        DKK 663
        21% OFF
        DKK 842 DKK 663
      • ISP 06:00
        15h 40m
        1 stop
        ATL 21:40
        Islip - Atlanta | Thu, Dec 18 | Frontier Airlines
        DKK 749
        11% OFF
        DKK 842 DKK 749
      • ISP 13:00
        17h 25m
        1 stop
        ATL Invalid Date
        Islip - Atlanta | Fri, Dec 12 | Normal Airline
        Find More Flights
        Find More Flights

Displayed flight fares from Islip to Atlanta are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Islip to Atlanta Flight Details

The distance between Islip and Atlanta is about 1,278.06 km. Based on Trip.com's latest data, travel demand is highest in July. The off-season for travel is September.

Cheapest one-way flight priceDKK 399
Cheapest return ticket priceDKK 1,096
Cheapest monthSeptember
Peak season for travelJuly
Flight distance1,278.06 km

When is the cheapest time to book flights from Islip to Atlanta?

The cheapest time to fly from Islip to Atlanta: Jan 4 to Jan 11 — one-way prices start at DKK 399.

Cheapest flights
From price
Search
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • What are the cheapest flights from Islip to Atlanta (ISP-ATL)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as DKK 399 on Cheapest nonstop routes (e.g. ISP to ATL on Sat, Jan 10), while Frontier Airlines offers Cheapest nonstop round-trips from DKK 1,096 departing on Sat, Dec 13 and returning on Wed, Dec 17.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Islip to Atlanta is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Islip to Atlanta, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Sat, Jan 10, with one-way flights priced at just DKK 399.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Atlanta travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Islip to Atlanta is September, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Islip to Atlanta on December 13, 2025 with Frontier Airlines, with prices starting at DKK 1,095.
  • The time difference between Atlanta and Islip is 0h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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