Cheap flights from Sioux Falls to Illinois from $88
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Sioux Falls to Illinois departing on 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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United Airlines flights from Sioux Falls to Illinois
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How to get the cheapest flight ticket from Sioux Falls to Illinois
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Illinois?
The cheapest month to fly to Illinois from Sioux Falls is in January. Flight prices, which tend to average around $193, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $250.
What is the cheapest day to depart on your flight to Illinois?
The cheapest day to depart from Sioux Falls to Illinois is on a Friday when prices can be found for as low as $432. Flights from Sioux Falls to Illinois on a Sunday will generally be more expensive and average around $616. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Sioux Falls to Illinois during this time can be as low as $244. Flights in the afternoon are often more expensive with an average ticket price of $518.
What is the cheapest Sioux Falls Joe Foss Field to Illinois flight route?
Fly from Sioux Falls Joe Foss Field to Chicago O'Hare Intl for the best Sioux Falls Joe Foss Field - Illinois flight prices
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from Sioux Falls when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $283 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Sioux Falls for as low as $235 on momondo.
What cabin class options are available on Sioux Falls Joe Foss Field to Illinois flights?
There are 4 cabin classes available to choose from on Sioux Falls Joe Foss Field to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Sioux Falls Joe Foss Field to Illinois?
Frontier, United Airlines, and Delta are the most popular carriers operating from Sioux Falls Joe Foss Field to Illinois
What airlines fly to Illinois?
United Airlines, American Airlines and Denver Air Connection are the top three most popular airlines that fly to Illinois from Sioux Falls according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
How many flights depart from Sioux Falls to Illinois on average per day?
The number of flights available between Sioux Falls and Illinois is 9 per day as of July 2025. The most frequent departure time is 12:00PM, with 45% of daily flights leaving in the afternoon.
How many flights depart from Sioux Falls to Illinois on average per week?
As of July 2025, 63 flights take off from Sioux Falls and land in Illinois each week. The most common flight departure day for this route is Thu, with 30% of weekly flights taking off on this day.
Cheap Sioux Falls to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Sioux Falls to Illinois
When did momondo last update prices for flights from Sioux Falls Joe Foss Field Airport to Illinois?
Prices for flights from Sioux Falls Joe Foss Field Airport to Illinois are updated daily.
How many operators does momondo search for flights from Sioux Falls Joe Foss Field Airport to Illinois?
As of July 2025, there are 3 operators available to choose from for flights from Sioux Falls Joe Foss Field Airport to Illinois.
How old do you have to be to fly from Sioux Falls Joe Foss Field Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Sioux Falls Joe Foss Field Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Sioux Falls to Illinois?
Based on momondo bookings for flights between Sioux Falls and Illinois, the leading plane model is Canadair (Bombardier) Regional Jet CRJ-550, making up 26.44% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 700 with 21.84%, Boeing 737-700 with 15.71%, and Embraer 170 with 9.00%.
Best airlines flying from Sioux Falls to Illinois
Compare and see reviews for airlines that fly from Sioux Falls to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $179 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $194 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom $208 | Free Cancellation | Rating 8.0 7,983 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Sioux Falls to Illinois?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Sioux Falls to Illinois. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Sioux Falls to Illinois with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Illinois from Sioux Falls with this policy.
How can momondo help me find flights from Sioux Falls to Illinois?
Once all potential Sioux Falls to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Sioux Falls to Illinois right now. Can momondo alert me if prices change?
Price alerts on flights to Illinois from Sioux Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.