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Cheap flights from Chicago to St Louis (CHI - STL)

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The best prices from Chicago to St Louis are usually found in February or May, booked 48 days in advance, depart on a Saturday or Wednesday and return on a Monday

How to find the cheapest flight from
Chicago (CHI) to St Louis (STL)

CHI - STL
Price
$191 - $297
STL
Temperature
44.6 - 89.6 °F
STL
Rainfall
2.2 - 5.1 inches
Popular in January High demand for flights, 10% potential price rise
Cheapest in February Best time to find cheap flights, 28% potential price drop
Round-trip from ¥191 From Chicago to St Louis
One-way from ¥86 One-way flight from Chicago to St Louis
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Chicago to St Louis?

Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 17% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from Chicago to St Louis?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 27% on flights from Chicago to St Louis compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $164. For sooner than that we have options available in the next 3 days from $181.

When is the cheapest time to fly from Chicago to St Louis (CHI - STL)?

It’s typically best to fly out from Chicago to St Louis at noon. Doing so could potentially save you 15% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap flights from Chicago to St Louis in September, October 2020

The best prices found for CHI to STL flights for September, October
4 Oct - 10 Oct
$87pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
Non-Stop
ORD
Chicago O'Hare Intl
7 Oct - 21 Oct
$90pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
10 Oct - 11 Oct
$91pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

Chicago to St Louis 2020 flight deals

Cheap flights to St Louis from Chicago found for this year
4 Oct - 10 Oct
$87pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
Non-Stop
ORD
Chicago O'Hare Intl
7 Oct - 21 Oct
$90pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
10 Oct - 11 Oct
$91pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
ORD
Chicago O'Hare Intl

Non-stop flights to St Louis from Chicago

Save time with Chicago to St Louis direct flight deals
4 Oct - 10 Oct
$87pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
Non-Stop
ORD
Chicago O'Hare Intl
8 Oct - 11 Oct
$97pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
1 Oct - 4 Oct
$104pp
ORD
Chicago O'Hare Intl
Major Airline
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Major Airline
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Chicago to St Louis

Late deals on round-trip flights to St Louis from Chicago, departing today and this week
1 Oct - 4 Oct
$104pp
ORD
Chicago O'Hare Intl
Major Airline
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Major Airline
Non-Stop
ORD
Chicago O'Hare Intl
1 Oct - 4 Oct
$116pp
ORD
Chicago O'Hare Intl
Major Airline
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Major Airline
Non-Stop
ORD
Chicago O'Hare Intl
1 Oct - 4 Oct
$148pp
ORD
Chicago O'Hare Intl
Major Airline
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Major Airline
 
1 STOP
ORD
Chicago O'Hare Intl

One-way flights to St Louis from Chicago

The cheapest one-way flights from Chicago to St Louis
12:15 pm - 4:10 am
Air Choice One
1 Stop
15h 55m
ORD - STL
Air Choice One
$86
Kiwi.com
5:33 am - 12:09 pm
Cape Air
1 Stop
6h 36m
ORD - STL
Cape Air
$128
KAYAK
7:53 am - 4:58 pm
Delta
1 Stop
9h 05m
MDW - STL
Delta
$134
Delta

Related info for your journey

Useful info, stats and facts about Chicago to St Louis flights.

Flight FAQs

From Chicago to St Louis

Are flight prices decreasing from Chicago to St Louis due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Chicago and St Louis for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from Chicago to St Louis for under $100 on Cheapflights?

Yes, there are multiple flights from Chicago to St Louis for under $100. The cheapest flight booked recently is on Multiple Airlines for just $87, but on average you can expect to pay $119.

Are there nonstop flights from Chicago to St Louis for under $100 on Cheapflights?

Cheapflights has at least 10 direct flights from Chicago to St Louis under $100. A good price for a nonstop flight from Chicago to St Louis is less than $1,292.

Are there last-minute flights available from Chicago to St Louis for under $200?

There are currently 17+ open flights from Chicago to St Louis within the next 7 days for less than $200.

Is Chicago weather warmer or cooler than St Louis?

Our data indicates that the weather will be 90 °F on average in the month of July. The temperature in St Louis is typically hotter than in Chicago. If you're traveling when the temperature is at its warmest, push to plan early, as flight price and availability will have an impact on your travels. For the best results, search for flights well in advance or after peak season.

How long is the flight from Chicago to St Louis?

Major Airline, Linear Air Taxi, and Delta can get you from Chicago to St Louis in just under 1h 17m. Your travel time can differ by up to 2h 24m. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Chicago to St Louis round-trip?

Our cheapest airline available from Chicago to St Louis is Major Airline. Our recent data shows that you can find tickets from as low as $104 on this airline. Additional options worth looking into are Delta and Air Choice One, starting at $118 and $159 round-trip. Users have found that Major Airline is 60% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from Chicago to St Louis one-way?

For one-way options, check prices for Delta. According to our data, you can fly for as low as $59. Users have also found prices from $73 and $119 on Delta and Air Choice One, respectively.

Alternative routes for Chicago to St Louis

Destination information for St Louis

Things to know before you go. Useful info for your trip from Chicago to St Louis
Flight duration
1h 16m
Average temperature for September in St Louis
82.4 °F
Avg rainfall for September in St Louis
3.0 ″

Airports servicing Chicago

Chicago Midway (MDW)
Rockford (RFD)

Airports servicing St. Louis

Hourly flight availability from Chicago to St Louis

Afternoon Noon to 6 PM 54% of CHI to STL departures
Evening 6 PM to midnight 31% of CHI to STL departures
Morning 6 AM to noon 14% of CHI to STL departures
Early morning Midnight to 6 AM 1% of CHI to STL departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Chicago to St Louis
Sunday
32 daily flights
Monday
31 daily flights
Tuesday
35 daily flights
Wednesday
28 daily flights
Thursday
34 daily flights
Friday
36 daily flights
Saturday
28 daily flights
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