$37 Find Cheap Flights from Illinois to Missouri

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Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$37
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from St. Louis to Quincy

FAQs for booking flights from Illinois to Missouri

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

    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 Missouri.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Missouri 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 Missouri?

    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 Missouri 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 Missouri?

    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 Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Missouri?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Missouri is Kirksville Cannon Memorial Airport (IRK), with an average flight price of $109.

  • What is the cheapest day to fly to Missouri?

    Based on KAYAK data, the cheapest day to fly to Missouri is Thursday where round-trip tickets can be as cheap as $283. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $425 on average.

  • What is the cheapest time of day to fly to Missouri?

    The cheapest time of day to fly to Missouri is generally at night, when round-trip flights cost $264 on average. Morning departures are around 12% more expensive than evening flights, on average. The most expensive time of day to fly to Missouri is generally in the morning, which is peak travel time and where the average cost of a ticket is $321.

  • What is the cheapest flight to Missouri?

    The cheapest ticket to Missouri from Illinois found in the last 72 hours was to Fort Leonard Wood, at $133 round-trip. The most popular route is Chicago Midway Airport (MDW) to Kansas City (MCI) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $147.

  • What is the cheapest month to fly from Illinois to Missouri?

    The cheapest month for flights from Illinois to Missouri is August, when tickets cost $263 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $373 and $369 respectively.

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

    To get a below average price on the flight from Illinois to Missouri, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

  • How long is the flight to Missouri?

    An average nonstop flight from Illinois to Missouri takes 6h 50m, covering a distance of 301 miles. The shortest route is St. Louis (STL) to Quincy (UIN) with an average flight time of 1h 00m.

  • What are the most popular destinations in Missouri?

    Based on KAYAK flight searches, the most popular destination is Kansas City (49% of total searches to Missouri). The next most popular destinations are St. Louis (36%) and Springfield (11%). Searches for flights to Columbia (2%), to Cape Girardeau (1%) and to Joplin (1%) are also popular.

Top 5 airlines serving from Illinois to Missouri

 
Need help choosing which airline to fly with from Illinois to Missouri? 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.
8.0
SouthwestOverall score based on 4287 reviews
7.6Entertainment
8.0Comfort
7.1Food
8.2Boarding
8.6Crew
Airline reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

6.0 GoodDavid, Jun 2025BWI - COS
Read more Southwest reviews

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

Staff was far less than helpful at all times. Departure and arrival times mean nothing to Southwest. Extremely disappointed, will never fly with them again, and I’ll be sure to share my experience with all.

It is southwest seat was ok. Not the most comfortable seat

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

The price of the tickets isn't matching the flight experience. No matter how long the flight is, you're only getting pretzels. The flight attendants looked unkept and over it.

Plz don't take away free bags and free seating

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

A bit rush for transit. Food and entertainment are not available

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

Our seats were all the way in back of the plane,

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

Improvements in communication and empathy are absolutely necessary for American Airlines staff (top down). It’s like they are numb to the needs of their customers.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

My boarding pass wouldn't pull up in the app very easily and had to really dig through my email. That caused a delay in TSA..

My luggage is missing and contour is doing a terrible service helping finding it. Unbelievable and the worst experience ever. I would love get my money back.

Flight was cancelled, but they got him on an earlier delayed rescheduled one. Arrived Chicago 2 hours later than expected but long layover so it worked.

Crew very helpful, weather made the flight less than optimal.

Flight was fine. I just forgot how smaller planes have more dips and seats in high winds.

It’s the only flight connecting Marion to Chicago, I do appreciate that it was available!

The flight was delayed and then less than 30 mins before boarding they cancelled the flight when clearly they had to have known earlier that they were going to have to cancel. There was only one person there available to talk to and all he could do was tell us to call reservations our self. Due to high call volume I waited 2 hours to even get rebooked on a flight to a different city where I would still have to drive 1 hr to my destination, only option for me. While waiting to talk to reservations people were getting emails with new flight info and the flights were days out and sone even a week out. . I did not get compensated in anyway after having spent all day at the airpot, not even a food voucher. Very disappointed, terrible experience.

Information regarding the delayed flight could have been better, and the Contour airlines app needs some serious updates. But overall, the crew was great and the flight was uneventful.

The boarding procedure is as easy and the crew very friendly.

This is a great airline for what it is. You get 1 checked bag included per passenger and the space per seat is incredible. It’s an E135 aircraft that is configured to seat 50 people but they have removed 20 seats and only seat 30 so you have a ton of legroom. They are doing things right and have a great product for what it is. It’s not going to knock your socks off in experience overall but the plane, although dates, was nice and clean and the crew was great. The flights were on time and super efficient. Will travel them again. I am a frequent traveler on all the larger airlines and this was just as good as any regional carrier, if not better. I expect big things out of Contour in the years to come.

Not waiting on the tarmac for an hour and 20 minutes

We had a wonderful flight due to the care of our experienced pilot and copilot and the magnificent air views from our comfortable seats. What excitement to be in such a small plane with such magnificent around us.

Multiple time changes, then we left earlier than we were told.

Communication could be better but the staff and crew were over the top friendly and helpful, The flight itself was smooth.

flight was cancelled literally at 10pm the night before an early morning flight with hardly any time to reschedule. Will never book with kayak again.

My flight was cancelled 12 hours before takeoff. I was not able to reschedule another flight to make connections and had to cancel the entire trip. The ticket that was supposed to replace the cancelled flight had no boarding pass and I was unable to get one at the airport so I was denied access to the rescheduled flight. I was refunded but I missed my daughter's birthday.

I had a family emergency and couldn’t make the flight, and they wouldn’t let me cancel/refund it (a *month* ahead of time), were especially difficult with me on the phone, and wouldn’t let me even so much as reschedule the flight or get credit.

Flight was cancelled, communication was poor and should have canceled flight much earlier.

Flight was cancelled twice. Moved four more times. Probably the least timely and poorly run airline I have ever experienced in my life. I have traveled hundreds of times to dozens of countries and this one takes the cake.

Excellent crew, good flight. Flight was delayed about 1 1/2 hours though.

Pros: "The ground crew and flight crew were great."
Cons: "Would have appreciated easier steps (lower risers) for boarding. Arthritic knee makes it hard for me to manage the high risers between steps. Also having armrests would have made the flight more comfortable."

Book cheap flights from Illinois to Missouri

Recent round-trip flight deals

7/17Thu
nonstopSouthern / Mokulele
1h 00mSTL-UIN
7/23Wed
nonstopSouthern / Mokulele
1h 00mUIN-STL
$78
6/24Tue
nonstopSouthern / Mokulele
1h 00mSTL-UIN
7/7Mon
nonstopSouthern / Mokulele
1h 00mUIN-STL
$81
8/19Tue
nonstopAmerican Airlines
1h 25mORD-STL
8/20Wed
nonstopAmerican Airlines
1h 24mSTL-ORD
$97
8/19Tue
nonstopSouthwest
1h 15mMDW-STL
8/20Wed
nonstopSouthwest
1h 05mSTL-MDW
$97
8/20Wed
nonstopAmerican Airlines
1h 18mORD-STL
8/26Tue
nonstopAmerican Airlines
1h 24mSTL-ORD
$98
8/19Tue
1 stopSouthwest
3h 55mMDW-STL
8/20Wed
nonstopSouthwest
1h 10mSTL-MDW
$107
7/10Thu
nonstopContour
1h 35mORD-CGI
8/18Mon
nonstopContour
1h 40mCGI-ORD
$120
7/26Sat
nonstopContour
1h 35mORD-CGI
8/2Sat
nonstopContour
1h 40mCGI-ORD
$127
9/23Tue
nonstopUnited Airlines
1h 35mORD-MCI
9/25Thu
nonstopUnited Airlines
1h 47mMCI-ORD
$150
9/3Wed
nonstopUnited Airlines
1h 42mORD-MCI
10/1Wed
nonstopUnited Airlines
1h 47mMCI-ORD
$169

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Recent one-way flight deals

7/4Fri
nonstopSouthern / Mokulele
1h 00mSTL-UIN
$37
7/2Wed
nonstopSouthern / Mokulele
1h 00mSTL-UIN
$39
8/7Thu
nonstopAmerican Airlines
1h 26mORD-STL
$49
9/17Wed
nonstopSouthwest
1h 05mSTL-MCI
$49
8/5Tue
nonstopSouthwest
1h 15mMDW-STL
$49
10/27Mon
nonstopUnited Airlines
1h 36mORD-MCI
$55
9/1Mon
nonstopUnited Airlines
1h 24mORD-STL
$62
9/14Sun
nonstopContour
1h 35mORD-CGI
$80
6/25Wed
nonstopContour
1h 35mORD-CGI
$84
9/9Tue
nonstopAmerican Airlines
1h 43mORD-MCI
$85

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Last minute flights from Illinois to Missouri

Last minute flight, train and bus deals

6/16Mon
multi-stopSouthern / Mokulele
11h 45mORD-STL
6/17Tue
multi-stopSouthern / Mokulele
22h 17mSTL-ORD
$204
6/17Tue
multi-stop
12h 25mORD-STL
6/19Thu
multi-stop
3h 32mSTL-ORD
$216
6/13Fri
nonstopContour
1h 35mORD-CGI
6/17Tue
nonstopContour
1h 40mCGI-ORD
$254
6/15Sun
nonstopContour
1h 35mORD-CGI
6/17Tue
nonstopContour
1h 40mCGI-ORD
$282
6/14Sat
nonstopAmerican Airlines
1h 40mORD-SGF
6/16Mon
nonstopAmerican Airlines
1h 51mSGF-ORD
$303
6/14Sat
nonstopAmerican Airlines
1h 34mORD-SGF
6/16Mon
multi-stopAmerican Airlines
5h 10mSGF-ORD
$313
6/16Mon
nonstopUnited Airlines
1h 38mORD-MCI
6/19Thu
nonstopUnited Airlines
1h 44mMCI-ORD
$473
6/16Mon
multi-stopSouthwest
7h 45mORD-MCI
6/19Thu
multi-stopSouthwest
4h 25mMCI-ORD
$503
6/16Mon
multi-stopSouthwest
7h 45mORD-MCI
6/19Thu
multi-stopSouthwest
8h 00mMCI-ORD
$508
6/17Tue
nonstopUnited Airlines
1h 44mORD-MCI
6/18Wed
nonstopUnited Airlines
1h 44mMCI-ORD
$520

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Everything you need to know for your flight to Missouri

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.

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