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Cheap Flights from St Louis to Chicago, IL, United States - STL to CHI

Popular flights from St Louis to Chicago

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska Airlines
Departure Date Return Date Lowest Price
Jul 13, 2016 Jul 15, 2016 $395
American Airlines
Departure Date Return Date Lowest Price
Jun 8, 2016 Jun 18, 2016 $204
United Airlines
Departure Date Return Date Lowest Price
Jun 8, 2016 Jun 18, 2016 $204

How Much Does it Cost to Fly from St Louis to Chicago (STL to CHI)?

We have collected flight cost data from across the web for travel from St Louis to Chicago, and have found the average flight price for this trip to be $222.

When Can I Buy the Cheapest Flight from St Louis to Chicago (STL to CHI)?

Airlines can adjust prices for plane tickets from St Louis to Chicago based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

How far in advance should you book flights from St Louis to Chicago

The chart below shows up-to-date information regarding how far in advance a flight from St Louis to Chicago should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $384 $462
7-14 days $266 $392
14-21 days $241 $347
21-30 days $213 $347
30-60 days $204 $317
60-90 days $241 $317
90+ days $213 $347

Cheapest Day To Fly from St Louis to Chicago

The chart below shows up-to-date information regarding the cheapest days to fly from St Louis to Chicago.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$223 $213 $204 $218 $241 $213 $241

Lowest Fares Chart By Month from St Louis to Chicago

The chart below shows the lowest fare by month when flying from St Louis to Chicago.

Month Origin Destination Carrier Depart Date Return Date Stops Price
May St Louis Chicago American 5/27/16 5/29/16 0 $241
June St Louis Chicago American 6/8/16 6/18/16 0 $204
July St Louis Chicago American 7/20/16 8/9/16 0 $241
August St Louis Chicago American 8/27/16 9/10/16 0 $213
September St Louis Chicago American 9/15/16 9/28/16 0 $218
October St Louis Chicago American 10/12/16 10/15/16 0 $213
November St Louis Chicago American 11/3/16 11/9/16 0 $257
December St Louis Chicago American 12/18/16 12/18/16 0 $272

Cheapest Weekend Non-Stop Flights for the Next 30 Days from St Louis to Chicago

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from St Louis to Chicago.

Next 30 Days

SunMonTueWedThuFriSat
8 9 10 11 12 13 14
$370
15 16 17 18 19 20 21
$370 $291
22 23 24 25 26 27 28
$291 $241
29 30 31 1 2 3 4
$241 $241
5 6 7 8 9 10 11
$241 $218
12 13 14 15 16 17 18
$218

TIPSave $98 by flying into Milwaukee instead of Chicago from St Louis

Non-Stop vs Connecting Flights from St Louis to Chicago (STL to CHI)

Your St Louis to Chicago flight can be significantly cheaper by choosing a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from St Louis to Chicago is $355.

The average price for non-stop flights from St Louis to Chicago is $222.

The chart below shows up to date information regarding non-stop flights from St Louis to Chicago.

Nonstop Flight Details from St Louis to Chicago
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
American 10 8 9 9 10 9 9 05:00 18:59
United 11 9 9 9 9 7 7 05:02 18:53

Round Trip vs One Way Flights from St Louis to Chicago (STL to CHI)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from St Louis to Chicago. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from St Louis to Chicago is $151.

The average price for round trip flights from St Louis to Chicago is $280.

St Louis to Chicago Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is a direct flight from St Louis to Chicago?
Answer: The average St Louis to Chicago flight time is an hour and 18 minutes.
Question: How many miles are there between St Louis and Chicago?
Answer: The distance from St Louis to Chicago is 258 miles.
Question: How common are direct flights from St Louis to Chicago?
Answer: There are 104 direct flights from St Louis to Chicago.
Question: What is the most popular airline for non-stop flights from St Louis to Chicago?
Answer: United Airlines provides 54% of the non-stop flights between St Louis and Chicago.
Question: What are the most popular connecting cities when flying from St Louis to Chicago?
Answer: Detroit, MI

Airlines Flying from St Louis to Chicago (STL to CHI)

Below are the different airlines that fly from St Louis to Chicago with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from St Louis to Chicago.

St Louis to Chicago
Airline Connections Mon Tue Wed Thu Fri Sat Sun
Air Choice One DEC X X X X X X X
American - X X X X X X X
Delta MSP X X X X X X X
United - X X X X X X X
Southwest - X X X X X X X
Southwest MCI X X X X X X X

Airports for Your Route

These pages contain information about the major airports in St Louis and Chicago, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Cheap Domestic Flights from St Louis - STL

FlightsAirlineLowest Price
St Louis to Milwaukee American, Alaska, United $207
St Louis to Atlanta American, Alaska, Frontier, United $88
St Louis to New York American, Alaska, United $245
St Louis to Dallas - Ft Worth American, Alaska, United $189
St Louis to South Bend United $600
St Louis to Detroit American, Alaska, United $232
St Louis to Madison American, Alaska, United $298
St Louis to Grand Rapids American, Alaska, United $234
St Louis to Minneapolis - St Paul American, Alaska, United $242
St Louis to IndianapolisCheck Dates
St Louis to Washington American, Alaska, United $203
St Louis to Charlotte American, Alaska, United $320
St Louis to Cincinnati American, Alaska, United $232
St Louis to Denver American, Alaska, Frontier, United $108
St Louis to Kalamazoo American, United Check Dates
St Louis to Cleveland American, Alaska, United $164
St Louis to Ft Wayne American, Alaska, United $402
St Louis to NashvilleCheck Dates

Cheap Domestic Flights to Chicago - CHI

Cheap Flights from St Louis to Chicago, IL, United States, from $204 Round trip from STL to CHI