$90 Find Cheap Flights from Illinois to South Dakota

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Low seasonJanuary
Cheapest flight$90
Most popular time to fly and prices are also 4% lower on average.
Flight from Chicago O'Hare Airport to Sioux Falls

FAQs for booking flights from Illinois to South Dakota

  • How does KAYAK find such low prices on flights from Illinois to South Dakota?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to South Dakota.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to South Dakota?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to South Dakota is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to South Dakota?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Illinois to South Dakota with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to South Dakota?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Illinois to South Dakota up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines fly most frequently to South Dakota?

    Illinois and South Dakota are connected by different airlines. The airlines that fly that route the most regularly are American Airlines (35 flights per week), Alaska Airlines (28 flights per week), and United Airlines (27 flights per week).

  • How many airports are there in South Dakota?

    There are 5 airports in South Dakota. The busiest airport is Sioux Falls Joe Foss Field Airport (FSD), with 69% of all flights arriving there.

  • Which is the cheapest airport to fly into in South Dakota?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in South Dakota is Sioux Falls Joe Foss Field Airport (FSD), with an average flight price of $223.

  • What is the cheapest day to fly to South Dakota?

    Based on KAYAK data, the cheapest day to fly to South Dakota is Thursday where round-trip tickets can be as cheap as $319. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $391 on average.

  • What is the cheapest time of day to fly to South Dakota?

    The cheapest time of day to fly to South Dakota is generally in the evening, when round-trip flights cost $276 on average. Morning departures are around 28% more expensive than evening flights, on average. The most expensive time of day to fly to South Dakota is generally at night, which is peak travel time and where the average cost of a ticket is $365.

  • What is the cheapest flight to South Dakota?

    The cheapest ticket to South Dakota from Illinois found in the last 72 hours was to Sioux Falls, at $189 round-trip. The most popular route is Chicago O'Hare Intl Airport (ORD) to Rapid City (RAP) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $219.

  • What is the cheapest month to fly from Illinois to South Dakota?

    The cheapest month for flights from Illinois to South Dakota is January, when tickets cost $249 (return) on average. On the other hand, the most expensive months are February and November, when the average cost of round-trip tickets is $392 and $368 respectively.

  • How far in advance should I book a flight from Illinois to South Dakota?

    To get a below average price on the flight from Illinois to South Dakota, you should book around 7 weeks before departure, which saves you about 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

  • How many cities have direct flights to South Dakota?

    From Illinois, there are direct flights to South Dakota from 1 city. This city is Chicago and there are 130 direct flights each week.

  • How many direct flights to South Dakota are there each day?

    There are around 19 direct flights from within Illinois to South Dakota every day. Most flights (49%) depart in the morning.

  • How many direct flights to South Dakota are there each week?

    Each week there are around 130 direct flights from within Illinois to South Dakota. The most common day for departures is Monday, with 15% of flights taking off on this day.

  • How long is the flight to South Dakota?

    An average nonstop flight from Illinois to South Dakota takes 7h 32m, covering a distance of 658 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Sioux Falls (FSD) with an average flight time of 1h 49m.

  • How many long-haul flights are there to South Dakota each week?

    There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to South Dakota. Instead, there are 130 short-haul flights (up to 3 hour flight duration), with the most arriving from Chicago.

  • What are the most popular destinations in South Dakota?

    Based on KAYAK flight searches, the most popular destination is Rapid City (59% of total searches to South Dakota). The next most popular destinations are Sioux Falls (40%) and Pierre (0%). Searches for flights to Aberdeen (0%) are also popular.

Reviews of the top 3 airlines serving from Illinois to South Dakota

 
Need help choosing which airline to fly with from Illinois to South Dakota? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8314 reviews
8.5Crew
8.1Boarding
7.9Comfort
7.2Food
7.8Entertainment
Airline reviews

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

2.0 MediocreAnonymous, Mar 2026
HNL - ATL
Read more Delta reviews

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

THEY FAILED ME AND I NEVER GOT ON THE FLIGHT BECAUSE IT WAS SO DELAYED! I ENDED UP HAVING TO PAY OUT OF POCKET FOR A HOTEL AND STAY IN NASHVILLE TO CATCH A FLIGHT FOR THE FOLLOWING DAY. DELTA IS POOR CUSTOMER SERVICE>

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

Short flight, but no drink/snack service. The flights both going and coming were delayed.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

I was fully checked in the prior night and i was unchecked and then didn’t have a seat when I boarded. Instead of an aisle seat, I was out in the middle seat of the very last row of the plane.

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

I understand weather is an issue, but making us chase our plane down at five scheduled gates across three terminals in an airport the size of O'Hare was unfair. They'd have probably been better off to leave gates as TBD until the inbound plane is in final approach instead of running us all over the place. Also, props to the consistently-unprepared ground crew in Richmond for once again leaving my lane parked short of the gate because they couldn't have a crew in place on time with 2 hours notice...

cabin crew was OK, food was OK, the trip from the US to Munich was actually pretty bad comfort wise. Noisy aircraft, lights never dimmed even in Business class (night flight) barely sufficient amenities for the price. I have millions of miles with United but TBH American is gaining ground and Delta has always been marginally better then United although on paper United has more longes and cheaper upgrades.

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

The gate got changed several times and the flight was delayed over an hour. Awful experience

American continues to decline in their customer service and its beyond disappointing.

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

Flight to Tampa was delayed taking off due to plane arriving late but no other issues

As previously stated the delay I experienced flying from Wichita to Chicago caused a host of issues. When I finally was able to be booked on the last remaining American flight from Chicago to Cincinnati, the gate changed four times with the last change occurring very near the scheduled boarding time. While I didn't have a problem moving from gate to gate, I did notice and make note of others that had mobility issues and had to move each time for the gate change.

Maintenance took a very long time and then we were in a holding pattern. While a one-off maintenance issue is standard, there were delays on both of my flights for this trip based on maintenance issues with the planes, which delayed both flights over 45 minutes. Thankfully, I didn't have any connections but it wasn't an experience that would make me pick AA if I have other options.

No Snacks or Entertainment. The flight was short, snacks should still be given.

See prior comment about how Kayak mishandled my reservation and delayed my arrival by 6 hours.

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

Delayed an hour due to operational issues. Minimal apologies or care for the significant inconvenience caused. Landed at nearly 1am and they still couldn’t find ground staff to get us off the plane promptly.

Everything you need to know for your flight to South Dakota

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.