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Flights from Sioux Falls to Williston

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

      • FSD 11:06 AM
        24h 51m
        1 stop
        XWA 11:57 AM
        Sioux Falls - Williston | Sun, Dec 28 | Delta Air Lines
        XWA 11:32 AM
        4h 19m
        1 stop
        FSD 3:51 PM
        Williston - Sioux Falls | Wed, Dec 31 | Delta Air Lines
        €662 €802
        17% OFF
        17% OFF
        €802 €662
      • FSD 6:00 AM
        4h 49m
        1 stop
        XWA 10:49 AM
        Sioux Falls - Williston | Sun, Dec 28 | United Airlines
        XWA 2:55 PM
        5h 5m
        1 stop
        FSD 8:00 PM
        Williston - Sioux Falls | Wed, Dec 31 | United Airlines
        €689 €802
        14% OFF
        14% OFF
        €802 €689
      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        ISN 3:00 PM
        6h
        Nonstop
        FSD 4:00 PM
        Williston - Sioux Falls | Wed, Dec 17 | Normal Airline
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      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
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      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        Search
        Search
      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        Search
        Search
      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        Search
        Search
      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        Search
        Search
      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        Search
        Search
      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        Search
        Search
      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        Search
        Search
      • FSD 1:00 PM
        17h 25m
        1 stop
        ISN Invalid Date
        Sioux Falls - Williston | Mon, Dec 15 | Normal Airline
        Search
        Search

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

Flying from Sioux Falls to Williston

The distance between Sioux Falls and Williston is approximately 738.85 km. Based on Trip.com's data, travel demand peaks in May. The off-season for travel is November.

Cheapest round-trip ticket price€662
Off-season for travelNovember
Peak season for travelMay
Flight distance738.85 km

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

The cheapest time for Sioux Falls to Williston flights: Dec 21 to Dec 28 — one way flight prices from €661.

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 Sioux Falls to Williston, calculated over the upcoming 10 weeks.

Frequently Asked Questions

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

    By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Sioux Falls to Williston 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 Sioux Falls to Williston, 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 Williston travel is around May.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Sioux Falls to Williston is November, when demand for travel is lower.
  • After crunching the numbers on our December flight calendar, it's currently cheapest to fly from Sioux Falls to Williston on December 28, 2025 with Delta Air Lines, with prices starting at €661.
  • The time difference between Williston and Sioux Falls 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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