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Flights from Islip to Key West

Find cheap airlines flights from Islip to Key West

Choose from 1 carriers that fly from Islip to Key West, including Frontier Airlines, Enjoy the cheapest tickets on this route with Frontier Airlines.
Frontier Airlines logo Frontier Airlines

Find flight deals from Islip to Key West for the next 3 months. Book one way flights from $93 or round trip flights from $799.

      • ISP 7:30 AM
        9h 45m
        2 stops
        EYW 5:15 PM
        Islip - Key West | Tue, Dec 9 | Cape Air
        EYW 6:10 PM
        16h 54m
        2 stops
        ISP 11:04 AM
        Key West - Islip | Sat, Dec 13 | Delta Air Lines
        $799 $1,343
        41% OFF
        41% OFF
        $1,343 $799
      • ISP 12:40 PM
        25h 11m
        2 stops
        EYW 1:51 PM
        Islip - Key West | Sun, Dec 14 | Cape Air
        EYW 4:10 PM
        18h 54m
        2 stops
        ISP 11:04 AM
        Key West - Islip | Sun, Dec 21 | United Airlines
        $826 $1,343
        38% OFF
        38% OFF
        $1,343 $826
      • ISP 12:25 PM
        23h 40m
        2 stops
        EYW 12:05 PM
        Islip - Key West | Sat, Jan 24 | Jetblue Airways
        EYW 1:00 PM
        19h 52m
        2 stops
        ISP 8:52 AM
        Key West - Islip | Sat, Jan 31 | Jetblue Airways
        $853 $1,343
        36% OFF
        36% OFF
        $1,343 $853
      • ISP 7:25 AM
        29h 38m
        2 stops
        EYW 1:03 PM
        Islip - Key West | Sat, Jan 24 | Cape Air
        EYW 2:05 PM
        26h 5m
        2 stops
        ISP 4:10 PM
        Key West - Islip | Sat, Jan 31 | United Airlines
        $919
        32% OFF
        $1,343 $919
      • ISP 7:30 AM
        9h 40m
        2 stops
        EYW 5:10 PM
        Islip - Key West | Wed, Dec 10 | Cape Air
        EYW 6:05 PM
        22h 10m
        2 stops
        ISP 4:15 PM
        Key West - Islip | Sun, Dec 14 | Delta Air Lines
        $920
        32% OFF
        $1,343 $920
      • ISP 9:59 AM
        28h 14m
        2 stops
        EYW 2:13 PM
        Islip - Key West | Mon, Dec 22 | Cape Air
        EYW 3:09 PM
        19h 56m
        2 stops
        ISP 11:05 AM
        Key West - Islip | Fri, Dec 26 | United Airlines
        $940
        30% OFF
        $1,343 $940
      • ISP 1:00 PM
        17h 25m
        1 stop
        EYW Invalid Date
        Islip - Key West | Thu, Dec 11 | Normal Airline
        EYW 3:00 PM
        6h
        Nonstop
        ISP 4:00 PM
        Key West - Islip | Sat, Dec 13 | Normal Airline
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Displayed flight fares from Islip to Key West are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Islip to Key West

The distance between Islip and Key West is approximately 1,977.58 km. Based on Trip.com's data travel demand peaks in November. The off-season for travel is September.

Cheapest one-way flight price$93
Cheapest round-trip ticket price$799
Off-season for travelSeptember
Peak season for travelNovember
Flight distance1,977.58 km
Popular airlineFrontier Airlines

When is the cheapest time to fly from Islip to Key West?

The cheapest time for Islip to Key West flights: Dec 7 to Dec 14 — one way flight prices from $93.

Cheapest flights
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  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Islip to Key West, calculated over the upcoming 10 weeks.

Frequently Asked Questions

  • What are the cheapest flights from Islip to Key West (ISP-EYW)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as $93 on Cheapest nonstop routes (e.g. ISP to EYW on Sun, Dec 14), while Cape Air offers Cheapest nonstop round-trips from $799 departing on Tue, Dec 9 and returning on Sat, Dec 13.
  • 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 Key West 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 Key West, 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 Sun, Dec 14, with one-way flights priced at just $93.
    · 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 Key West travel is around November.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Islip to Key West is September, when demand for travel is lower.
  • The time difference between Key West 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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