Cheap flights from Chicago to St. Louis from $56

1 adult
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0 bags
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Sun 10/1
Sun 10/8

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Flight information for Chicago to St. Louis
(CHI to STL)

Find info about flight duration, direct flights, and airports for your flight from Chicago to St. Louis

Best Price Found

$56

Fastest flight time

1h 05m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Chicago in the past 72 hours is $56. The best round-trip flight deal from Chicago to St. Louis found on momondo in the last 72 hours is $119.
The fastest flight from Chicago to St. Louis takes 1h 05m
Direct flights go from Chicago to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

How to get the cheapest flight ticket from Chicago to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Chicago to St. Louis?

January. The cheapest time of year to fly to St. Louis from Chicago is January. Most expensive is June

What is the cheapest day to depart Chicago for St. Louis?

Saturday. The cheapest day of the week is typically Saturday. The most expensive is typically Tuesday

When is the cheapest time to fly from Chicago to St. Louis?

In the afternoon. Chicago to St. Louis flights are approximately 48% more expensive in the evening than in the afternoon

What is the cheapest airline that flies to St. Louis from Chicago?

Southern / Mokulele. American Airlines, Southern / Mokulele, and United Airlines are the most popular carriers operating from Chicago to St. Louis

What is the cheapest Chicago to St. Louis flight route?

Chicago O'Hare Intl - Lambert-St Louis. Fly from Chicago O'Hare Intl to Lambert-St Louis for the best Chicago - St. Louis flight prices

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

60 days before. The cheapest time to buy a flight from Chicago to St. Louis is approximately 60 days to departure

How many flights depart from Chicago to St. Louis on average per day?

The number of flights available between Chicago and St. Louis is 48 per day as of September 2023. The most frequent departure time is 7:00PM, with 42% of daily flights leaving in the afternoon.

How many flights depart from Chicago to St. Louis on average per week?

As of September 2023, there are 339 flights per week flying from Chicago to St. Louis. The most common day of the week flights depart is Monday, with 16% of flights taking off on this day.

What cabin class options are available on Chicago to St. Louis flights?

There are 2 cabin classes available to choose from on Chicago to St. Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago to St. Louis flights?

You could potentially save up to 11% on your flight if you consider stops on a Chicago to St. Louis flight.

If you are looking to fly from Chicago to St. Louis, you are most likely going to fly from Chicago O'Hare Intl Airport to Lambert-St Louis Airport, the most popular airports on that route. You may be looking for an airport near Chicago O'Hare Intl Airport to depart from when traveling to St. Louis and Chicago Midway Airport, located in Chicago is a great option. If you are looking for an alternate airport to fly into near Lambert-St Louis Airport, Springfield Capital Airport is a great option and is located in Springfield. The least expensive flight option from Chicago to St. Louis will typically be ORD — STL during the month of September with an average price of $119 RT.

Chicago O'Hare Intl Airport (ORD) to Lambert-St Louis Airport (STL)$119
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Chicago Midway Airport (MDW) to Lambert-St Louis Airport (STL)$177
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Chicago O'Hare Intl Airport (ORD) to Springfield Capital Airport (SPI)$319
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Easily compare round-trip flights from Chicago to St. Louis

Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Chicago to St. Louis by changing tabs
Southern / Mokulele
Dec 11
ORD12:15 pmChicago O'Hare Intl
3h 05m
1 stop
STL2:20 pmLambert-St Louis
Dec 12
STL4:35 amLambert-St Louis
7h 05m
1 stop
ORD11:40 amChicago O'Hare Intl
Multiple Airlines
Oct 10
ORD4:22 pmChicago O'Hare Intl
19h 12m
2 stops
STL10:34 amLambert-St Louis
Oct 12
STL11:55 amLambert-St Louis
3h 15m
1 stop
ORD3:10 pmChicago O'Hare Intl
Spirit Airlines
Oct 16
ORD4:22 pmChicago O'Hare Intl
19h 12m
2 stops
STL10:34 amLambert-St Louis
Oct 20
STL2:54 pmLambert-St Louis
26h 48m
3 stops
ORD5:42 pmChicago O'Hare Intl
American Airlines
Oct 28
ORD4:55 amChicago O'Hare Intl
4h 35m
1 stop
STL8:30 amLambert-St Louis
Oct 29
STL3:00 amLambert-St Louis
1h 19m
ORD4:19 amChicago O'Hare Intl
Delta
Oct 28
MDW1:30 pmChicago Midway
6h 06m
1 stop
STL6:36 pmLambert-St Louis
Oct 29
STL2:00 amLambert-St Louis
4h 53m
1 stop
MDW6:53 amChicago Midway
Frontier
Oct 21
MDW2:00 amChicago Midway
18h 51m
1 stop
STL7:51 pmLambert-St Louis
Oct 23
STL11:33 amLambert-St Louis
18h 56m
1 stop
MDW6:29 amChicago Midway

Find the cheapest one-way flights from Chicago to St. Louis

If you're looking for one-way flights from Chicago to St. Louis, view some of our deals below provided by American Airlines, Frontier and Southern / Mokulele
Frontier
Oct 18
MDW1:45 amChicago Midway
18h 48m
1 stop
STL7:33 pmLambert-St Louis
Spirit Airlines
Oct 24
ORD4:22 pmChicago O'Hare Intl
19h 12m
2 stops
STL10:34 amLambert-St Louis
Southern / Mokulele
Dec 10
ORD12:15 pmChicago O'Hare Intl
3h 05m
1 stop
STL2:20 pmLambert-St Louis

Search last-minute flights to St. Louis from Chicago

Find and compare round-trip flight prices for your last-minute flight from Chicago to St. Louis
Southern / Mokulele
Oct 1
ORD8:30 amChicago O'Hare Intl
18h 30m
1 stop
STL2:00 amLambert-St Louis
Oct 2
STL4:55 pmLambert-St Louis
10h 30m
1 stop
ORD3:25 amChicago O'Hare Intl
Multiple Airlines
Oct 1
ORD3:45 pmChicago O'Hare Intl
11h 15m
1 stop
STL2:00 amLambert-St Louis
Oct 2
STL12:55 pmLambert-St Louis
15h 48m
2 stops
ORD4:43 amChicago O'Hare Intl
Southern / Mokulele
Oct 5
ORD1:15 pmChicago O'Hare Intl
3h 05m
1 stop
STL3:20 pmLambert-St Louis
Oct 8
STL4:55 pmLambert-St Louis
10h 30m
1 stop
ORD3:25 amChicago O'Hare Intl
Southern / Mokulele
Oct 2
ORD4:15 amChicago O'Hare Intl
8h 30m
1 stop
STL11:45 amLambert-St Louis
Oct 2
STL4:55 pmLambert-St Louis
19h 45m
1 stop
ORD12:40 pmChicago O'Hare Intl
Southern / Mokulele
Oct 5
ORD1:15 pmChicago O'Hare Intl
3h 05m
1 stop
STL3:20 pmLambert-St Louis
Oct 8
STL4:55 pmLambert-St Louis
10h 30m
1 stop
ORD3:25 amChicago O'Hare Intl
Southern / Mokulele
Oct 6
ORD8:30 amChicago O'Hare Intl
7h 50m
1 stop
STL3:20 pmLambert-St Louis
Oct 8
STL8:00 amLambert-St Louis
4h 10m
1 stop
ORD12:10 pmChicago O'Hare Intl

Best airlines flying from Chicago to St. Louis

Compare and see reviews for airlines that fly from Chicago to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $125Free CancellationRating
7.2
2,716 reviews
Search United Airlines flights
American AirlinesPriceFrom $131Free CancellationRating
7.1
2,890 reviews
Search American Airlines flights
Southern / MokulelePriceFrom $142Free CancellationRating
8.6
2 reviews
Search Southern / Mokulele flights
  • United Airlines Flights From Chicago to St. Louis

    United Airlines operates around 48 flights from Chicago to St. Louis every week. The average price of these flights found in the last 72 hours has been $312, but momondo users have found United Airlines deals from Chicago to St. Louis from as low as $125 round-trip. United Airlines has been scored 7.2/10 in 2,716 reviews.

  • American Airlines Flights From Chicago to St. Louis

    Across 2,890 American Airlines reviews on momondo, the average score is 7.1/10. American Airlines flies from Chicago to St. Louis about 18 times each week, with ticket deals ranging from $131 to $282. Price data is based on momondo searches in the last 72 hours.


Southern / Mokulele flights from Chicago to St. Louis

Our best Southern / Mokulele deals on Chicago to St. Louis flight tickets
Southern / Mokulele
Dec 11
ORD12:15 pmChicago O'Hare Intl
3h 05m
1 stop
STL2:20 pmLambert-St Louis
Dec 12
STL4:35 amLambert-St Louis
7h 05m
1 stop
ORD11:40 amChicago O'Hare Intl
Southern / Mokulele
Oct 13
ORD1:15 pmChicago O'Hare Intl
3h 05m
1 stop
STL3:20 pmLambert-St Louis
Oct 15
STL11:55 amLambert-St Louis
3h 15m
1 stop
ORD3:10 pmChicago O'Hare Intl
Southern / Mokulele
Oct 10
ORD1:15 pmChicago O'Hare Intl
3h 05m
1 stop
STL3:20 pmLambert-St Louis
Oct 12
STL11:55 amLambert-St Louis
3h 15m
1 stop
ORD3:10 pmChicago O'Hare Intl

United Airlines flights from Chicago to St. Louis

Our best United Airlines deals on Chicago to St. Louis flight tickets
United Airlines
Oct 25
ORD6:52 amChicago O'Hare Intl
1h 25m
STL7:17 amLambert-St Louis
Nov 1
STL6:35 amLambert-St Louis
1h 25m
ORD8:00 amChicago O'Hare Intl
United Airlines
Oct 26
ORD8:49 amChicago O'Hare Intl
1h 27m
STL9:16 amLambert-St Louis
Oct 28
STL2:30 amLambert-St Louis
1h 24m
ORD3:54 amChicago O'Hare Intl
United Airlines
Nov 18
ORD9:15 amChicago O'Hare Intl
1h 18m
STL9:33 amLambert-St Louis
Nov 26
STL12:39 pmLambert-St Louis
1h 16m
ORD1:55 pmChicago O'Hare Intl

  • How far is Chicago to Lambert-St Louis by plane?

    There are 262.0 mi between Chicago and Lambert-St Louis. Typically, this will take 1h 14m by plane in normal conditions.

  • When did momondo last update prices for flights from Chicago to Lambert-St Louis Airport?

    Prices for flights from Chicago to Lambert-St Louis Airport were last updated today.

  • How many operators does momondo search for flights from Chicago to Lambert-St Louis Airport?

  • How old do you have to be to fly from Chicago to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.


Alternative routes for Chicago to St. Louis

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Chicago to Kansas City Flights
Fastest flight time1h 27m
Cheapest price$161
St. Louis to Kansas City Flights
Fastest flight time14h 20m
Cheapest price$164

Similar Chicago to St. Louis flights

Flexible with your destination? Broaden your search and find flights similar to your Chicago to St. Louis route

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to St. Louis?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Chicago.

Can I find flights from Chicago to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Chicago to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Chicago to St. Louis?

Once you have performed a search for Chicago to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Chicago to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


An easier way to manage your St. Louis trip

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