Cheap flight from Chicago to St. Louis from $45
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Flights from Chicago to St. Louis
Cheap flight deals from Chicago to St. Louis
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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Cheapest nonstop
MDW 11:10 AM1h 10mNonstopSTL 12:20 PMChicago - St. Louis | Thu, May 15 | Southwest Airlines
STL 4:35 PM1h 5mNonstopORD 5:40 PMSt. Louis - Chicago | Mon, May 19 | Southwest Airlines$87 $12933% OFF33% OFF$129 $87 -
MDW 8:45 PM1h 15mNonstopSTL 10:00 PMChicago - St. Louis | Mon, May 19 | Southwest Airlines
STL 6:30 PM1h 10mNonstopORD 7:40 PMSt. Louis - Chicago | Wed, May 21 | Southwest Airlines$89 $12931% OFF31% OFF$129 $89
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ORD 7:03 PM1h 27mNonstopSTL 8:30 PMChicago - St. Louis | Thu, Jun 5 | American Airlines
STL 6:00 AM1h 21mNonstopORD 7:21 AMSt. Louis - Chicago | Thu, Jun 12 | American Airlines$89 $12931% OFF31% OFF$129 $89 -
ORD 10:30 PM1h 21mNonstopSTL 11:51 PMChicago - St. Louis | Thu, May 15 | American Airlines
STL 7:30 PM1h 20mNonstopORD 8:50 PMSt. Louis - Chicago | Mon, May 19 | American Airlines$9328% OFF$129 $93
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ORD 6:46 AM1h 19mNonstopSTL 8:05 AMChicago - St. Louis | Thu, Jun 12 | American Airlines
STL 8:05 PM1h 24mNonstopORD 9:29 PMSt. Louis - Chicago | Mon, Jun 16 | American Airlines$9427% OFF$129 $94
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ORD 10:30 PM1h 21mNonstopSTL 11:51 PMChicago - St. Louis | Thu, May 22 | American Airlines
STL 5:00 AM1h 19mNonstopORD 6:19 AMSt. Louis - Chicago | Mon, May 26 | American Airlines$9527% OFF$129 $95
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ORD 10:30 PM1h 21mNonstopSTL 11:51 PMChicago - St. Louis | Mon, May 12 | American Airlines
STL 7:30 PM1h 20mNonstopORD 8:50 PMSt. Louis - Chicago | Wed, May 14 | American Airlines$9725% OFF$129 $97
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ORD 6:46 AM1h 19mNonstopSTL 8:05 AMChicago - St. Louis | Tue, Jun 24 | American Airlines
STL 6:03 AM1h 22mNonstopORD 7:25 AMSt. Louis - Chicago | Tue, Jul 1 | American Airlines$9923% OFF$129 $99
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ORD 1:59 PM1h 22mNonstopSTL 3:21 PMChicago - St. Louis | Tue, May 13 | American Airlines
STL 6:00 AM1h 19mNonstopORD 7:19 AMSt. Louis - Chicago | Tue, May 20 | American Airlines$10023% OFF$129 $100
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ORD 10:30 PM1h 21mNonstopSTL 11:51 PMChicago - St. Louis | Tue, Jun 3 | American Airlines
STL 8:05 PM1h 24mNonstopORD 9:29 PMSt. Louis - Chicago | Tue, Jun 10 | American Airlines$10023% OFF$129 $100
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CHI 1:00 PM17h 25m1 stopsSTL Invalid DateChicago - St. Louis | Mon, May 12 | Normal Airline
STL 3:00 PM6hNonstopCHI 4:00 PMSt. Louis - Chicago | Wed, May 14 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
ORD 10:30 PM1h 21mNonstopSTL 11:51 PMChicago - St. Louis | Wed, Jun 4 | American Airlines$45 $7237% OFF37% OFF$72 $45
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ORD 7:03 PM1h 27mNonstopSTL 8:30 PMChicago - St. Louis | Thu, Jun 12 | American Airlines$48 $7234% OFF34% OFF$72 $48
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ORD 10:30 PM1h 21mNonstopSTL 11:51 PMChicago - St. Louis | Mon, May 12 | American Airlines$50 $7231% OFF31% OFF$72 $50
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ORD 10:30 PM1h 21mNonstopSTL 11:51 PMChicago - St. Louis | Tue, Jun 3 | American Airlines$5031% OFF$72 $50
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ORD 8:29 AM1h 20mNonstopSTL 9:49 AMChicago - St. Louis | Wed, May 14 | American Airlines$5130% OFF$72 $51
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ORD 8:29 AM1h 20mNonstopSTL 9:49 AMChicago - St. Louis | Tue, May 20 | American Airlines$5128% OFF$72 $51
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ORD 11:47 AM1h 20mNonstopSTL 1:07 PMChicago - St. Louis | Thu, May 22 | American Airlines$5228% OFF$72 $52
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MDW 6:20 AM1h 10mNonstopSTL 7:30 AMChicago - St. Louis | Mon, Jun 2 | Southwest Airlines$5524% OFF$72 $55
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MDW 10:35 AM1h 15mNonstopSTL 11:50 AMChicago - St. Louis | Tue, Jun 3 | Southwest Airlines$5523% OFF$72 $55
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ORD 10:38 PM1h 16mNonstopSTL 11:54 PMChicago - St. Louis | Sat, Jun 21 | American Airlines$5523% OFF$72 $55
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CHI 1:00 PM17h 25m1 stopsSTL Invalid DateChicago - St. Louis | Mon, May 12 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Find cheap airlines flights from Chicago to St. Louis
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Frequently Asked Questions
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When are flight tickets from Chicago (CHI) to St. Louis (STL) the cheapest?
Airlines adjust prices for flights from Chicago to St. Louis 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 Chicago (CHI) to St. Louis (STL) cost?
According to Trip.com's data, the lowest price is around $243. -
How long does it take to fly from Chicago (CHI) to St. Louis (STL) and what is the distance?
It takes around 1 hour 22 minutes to fly from Chicago (CHI) to St. Louis (STL). -
What are the most popular airlines that fly from Chicago (CHI) to St. Louis (STL)?
Airlines with flights from Chicago (CHI) to St. Louis (STL): Royal Jordanian, Qatar Airways, Southwest Airlines, American Airlines, United Airlines, Iberia, GoJet Airlines, All Nippon Airways, Alaska Airlines, Air New Zealand and British Airways.
How to find a cheap flight from Chicago to St. Louis
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 Chicago to St. Louis. Book your flights at the right time and save more.
Book Early
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Compare Flight Prices
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Look Out for Deals
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Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
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Flight Info | Chicago to St. Louis
| Cheapest one-way flight price | $44 |
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| Cheapest round-trip ticket price | $86 |
| Off-season for travel | April |
| Peak season for travel | June |
| Flight distance | 421.66 km |
| Average flight time | 1 hour 22 minutes |
| Popular airline | United Airlines |