Cheap flight deals from Williston to Sioux City

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

Round-trip
One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

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

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights

From price

20 27
May

27 4
4 11
11 18
18 25
Jun

25 1
1 8
8 15
15 22
22 29
Jul

29 6
6 13

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

Frequently Asked Questions

When are flight tickets from Williston (ISN) to Sioux City (SUX) the cheapest?

Airlines adjust prices for flights from Williston to Sioux City based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Williston (ISN) to Sioux City (SUX) cost?

According to Trip.com's data, the lowest price is around Rp 10,089,106.

How to find a cheap flight from Williston to Sioux City

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Williston to Sioux City. Book your flights at the right time and save more.

Be flexible with your travel dates to get the cheapest Williston to Sioux City ticket.

Tap "Date" in the flight search bar to browse the calendar and find airfare from Williston to Sioux City for the next six months in 2025. If you're looking to fly within the next three months, the lowest fare is Rp 5446965 for a one-way ticket on Sun, Apr 27.

Compare cheap Williston to Sioux City flight deals from hundreds of airlines.

Our powerful search system compares prices from over 500 airlines. So you can find the cheapest flights from Williston to Sioux City. The most affordable airline currently operating on this route is United Airlines.

Set up a Price Alert to track fare drops.

Set up a Price Alert for your Williston to Sioux City route to track ticket prices effortlessly—no need to check manually every day.

Don't miss out on cheap Williston to Sioux City flight deals and promo codes.

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Book early or wait unitl the last minute to fine the best fares.

It's always better to book early! Airlines typically release their lowest fares about a year before departure, so check as soon as flights become available. If you miss that window, you may still find great deals closer to your travel date.

Search for flights on the go.

For the best booking experience on the go, download Trip.com and search for cheap flights from Williston to Sioux City to access exclusive deals just for you.

Flight Info | Williston to Sioux City

Cheapest one-way flight price	Rp 5,446,964
Off-season for travel	September
Peak season for travel	November
Flight distance	856.57 km
Popular airline	United Airlines