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Flights from Islip to Sioux Falls

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

      • ISP 12:25 PM
        34h 5m
        2 stops
        FSD 9:30 PM
        Islip - Sioux Falls | Thu, Jan 22 | Jetblue Airways
        FSD 1:23 PM
        21h 12m
        2 stops
        ISP 11:35 AM
        Sioux Falls - Islip | Sat, Jan 24 | American Airlines
        €640 €786
        19% OFF
        19% OFF
        €786 €640
      • ISP 7:30 AM
        17h 14m
        2 stops
        FSD 11:44 PM
        Islip - Sioux Falls | Thu, Jan 22 | Cape Air
        FSD 3:11 PM
        18h 53m
        2 stops
        ISP 11:04 AM
        Sioux Falls - Islip | Sat, Jan 24 | United Airlines
        €708 €786
        10% OFF
        10% OFF
        €786 €708
      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        FSD 3:00 PM
        6h
        Nonstop
        ISP 4:00 PM
        Sioux Falls - Islip | Mon, Dec 15 | Normal Airline
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      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
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      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        Search
        Search
      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        Search
        Search
      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        Search
        Search
      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        Search
        Search
      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        Search
        Search
      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        Search
        Search
      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        Search
        Search
      • ISP 1:00 PM
        17h 25m
        1 stop
        FSD Invalid Date
        Islip - Sioux Falls | Sat, Dec 13 | Normal Airline
        Search
        Search

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

Flight Info | Islip to Sioux Falls

The distance between Islip and Sioux Falls is approximately 1,965.43 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is December.

Cheapest round-trip ticket price€640
Off-season for travelDecember
Peak season for travelJuly
Flight distance1,965.43 km

When is the cheapest time to fly from Islip to Sioux Falls?

The cheapest time for Islip to Sioux Falls flights: Jan 18 to Jan 25 — one way flight prices from €640.

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 Sioux Falls, calculated over the upcoming 10 weeks.

Frequently Asked Questions

  • When is the best time to book flights from Islip to Sioux Falls?

    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 Sioux Falls 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 Sioux Falls, you can use various tools on Trip.com:
    · 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 Sioux Falls travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Islip to Sioux Falls is December, when demand for travel is lower.
  • The time difference between Sioux Falls and Islip is 1h.
  • 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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