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

Popular flights from Chicago to St Louis

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
May 12, 2016 May 13, 2016 $1,197
American Airlines
Departure Date Return Date Lowest Price
Jun 4, 2016 Jun 11, 2016 $213
Jun 4, 2016 Jun 11, 2016 $213
Jun 7, 2016 Jun 15, 2016 $213
Jun 8, 2016 Jun 15, 2016 $213
Jun 11, 2016 Jun 14, 2016 $213
United Airlines
Departure Date Return Date Lowest Price
Jun 4, 2016 Jun 11, 2016 $213
Jun 11, 2016 Jun 14, 2016 $213

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

We have collected flight cost data from across the web for travel from Chicago to St Louis, and have found the average flight price for this trip to be $220.

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

Airlines can adjust prices for plane tickets from Chicago to St Louis 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 Chicago to St Louis

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

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $370 $462
7-14 days $252 $403
14-21 days $227 $307
21-30 days $213 $347
30-60 days $213 $317
60-90 days $249 $383
90+ days $210 $347

Cheapest Day To Fly from Chicago to St Louis

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

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$218 $213 $213 $227 $227 $213 $227

Lowest Fares Chart By Month from Chicago to St Louis

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

Month Origin Destination Carrier Depart Date Return Date Stops Price
May Chicago St Louis American 5/31/16 6/2/16 0 $218
June Chicago St Louis American 6/4/16 6/11/16 0 $213
July Chicago St Louis American 7/1/16 7/3/16 0 $251
August Chicago St Louis American 8/30/16 8/31/16 0 $213
September Chicago St Louis American 9/6/16 9/20/16 0 $213
October Chicago St Louis American 10/4/16 10/11/16 0 $210
November Chicago St Louis United 11/19/16 11/29/16 0 $292
December Chicago St Louis American 12/29/16 1/2/17 0 $318

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

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 Chicago to St Louis.

Next 30 Days

SunMonTueWedThuFriSat
8 9 10 11 12 13 14
$367
15 16 17 18 19 20 21
$367 $252
22 23 24 25 26 27 28
$252 $227
29 30 31 1 2 3 4
$227 $227
5 6 7 8 9 10 11
$227 $213
12 13 14 15 16 17 18
$213

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

Your Chicago to St Louis 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 Chicago to St Louis is $333.

The average price for non-stop flights from Chicago to St Louis is $213.

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

Nonstop Flight Details from Chicago to St Louis
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
American 9 9 9 9 10 9 9 07:25 21:52
United 9 9 8 9 9 6 7 07:30 20:55

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

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 Chicago to St Louis. 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 Chicago to St Louis is $105.

The average price for round trip flights from Chicago to St Louis is $213.

Chicago to St Louis Flight Questions

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

Question: How long is a direct flight from Chicago to St Louis?
Answer: The average Chicago to St Louis flight time is an hour and 14 minutes.
Question: How many miles are there between Chicago and St Louis?
Answer: The distance from Chicago to St Louis is 258 miles.
Question: How common are direct flights from Chicago to St Louis?
Answer: There are 104 direct flights from Chicago to St Louis.
Question: What is the most popular airline for non-stop flights from Chicago to St Louis?
Answer: United Airlines provides 53% of the non-stop flights between Chicago and St Louis.
Question: What are the most popular connecting cities when flying from Chicago to St Louis?
Answer: Minneapolis - St Paul, MN

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

Below are the different airlines that fly from Chicago to St Louis 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 Chicago to St Louis.

Chicago to St Louis
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 ATL X X X X X X X
United - X X X X X X X
Southwest - X X X X X X X
Southwest CMH X X X X X X X

Airports for Your Route

These pages contain information about the major airports in Chicago and St Louis, 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 Chicago - CHI

FlightsAirlineLowest Price
Chicago to New York American, Alaska, JetBlue, Spirit, United $94
Chicago to Dallas - Ft Worth American, Alaska, Frontier, Spirit, United $87
Chicago to Las Vegas American, Alaska, Frontier, Spirit, United, Virgin America $107
Chicago to Orlando American, JetBlue, Frontier, Spirit, United $137
Chicago to Atlanta American, Spirit, United $71
Chicago to Los Angeles American, Alaska, Frontier, Spirit, United, Virgin America $122
Chicago to Minneapolis - St Paul American, Frontier, Spirit, United $48
Chicago to Denver American, Alaska, Frontier, Spirit, United $81
Chicago to Washington American, Alaska, Frontier, United $88
Chicago to Nashville American, Frontier, United $87
Chicago to Houston American, Spirit, United $127
Chicago to Detroit American, United $177

Cheap International Flights from Chicago - CHI

FlightsAirlineLowest Price
Chicago to Toronto Air Choice One, American, Air Canada, Alaska, JetBlue, Frontier, Spirit, Public Charters, Porter, United, WestJet, Great Lakes $237

Cheap Domestic Flights to St Louis - STL

Cheap Flights from Chicago to St Louis, MO, United States, from $213 Round trip from CHI to STL