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Cheap flights from Chicago to St. Louis

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Find the cheapest flights from Chicago to St. Louis

Cheap return flights

These are some of the best return flight deals from Chicago to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Chicago to St. Louis.

Cheap last-minute flights

Planning a quick getaway from Chicago to St. Louis? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to St. Louis, so you can enjoy a seamless trip without stopovers.

Cheap bus & train deals from Chicago to St. Louis

Find recent round-trip train or bus tickets from Chicago to St. Louis.

All round-trip flight deals to St. Louis

The cheapest plane tickets to St. Louis found on KAYAK recently.
ORD-STL
1h 24mdirect
STL-ORD
1h 29mdirect
American Airlines
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ORD-STL
1h 31mdirect
STL-ORD
1h 29mdirect
Qatar Airways
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ORD-STL
1h 23mdirect
STL-ORD
1h 35mdirect
Air Canada
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ORD-STL
1h 27mdirect
STL-ORD
1h 29mdirect
Japan Airlines
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ORD-STL
1h 21mdirect
STL-ORD
1h 29mdirect
Aer Lingus
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ORD-STL
1h 21mdirect
STL-ORD
1h 29mdirect
Austrian Airlines
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ORD-STL
1h 30mdirect
STL-ORD
1h 30mdirect
Emirates
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ORD-STL
1h 29mdirect
STL-ORD
1h 26mdirect
Copa Airlines
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ORD-STL
1h 23mdirect
STL-ORD
1h 35mdirect
Air New Zealand
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ORD-STL
1h 23mdirect
STL-ORD
1h 35mdirect
United Airlines
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ORD-STL
1h 31mdirect
STL-ORD
1h 29mdirect
Alaska Airlines
Find Deal
ORD-STL
1h 21mdirect
STL-ORD
1h 36mdirect
Avianca
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ORD-STL
1h 20mdirect
STL-ORD
1h 28mdirect
Cathay Pacific
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MDW-STL
1h 10mdirect
STL-MDW
1h 15mdirect
Southwest
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ORD-STL
1h 23mdirect
STL-ORD
1h 21mdirect
Turkish Airlines
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ORD-STL
1h 20mdirect
STL-ORD
1h 22mdirect
Finnair
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ORD-STL
1h 27mdirect
STL-ORD
1h 29mdirect
Royal Jordanian
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ORD-STL
1h 31mdirect
STL-ORD
1h 28mdirect
Iberia
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ORD-STL
1h 34mdirect
STL-ORD
1h 35mdirect
ORD-STL
1h 18mdirect
STL-ORD
1h 29mdirect
Lufthansa
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ORD-STL
1h 12mdirect
STL-ORD
1h 29mdirect
British Airways
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ORD-STL
1h 31mdirect
STL-ORD
1h 28mdirect
Gulf Air
Find Deal

See travel insights to St. Louis from

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 to St. Louis?

In general, March is the cheapest month to fly from Chicago to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around R4 355. If you aren’t able to travel to St. Louis during the month of March, then flying in May is also cheap. Prices for this month can be found on momondo for an average of R4 410.

What is the cheapest Chicago to Lambert-St Louis flight route?

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

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

The best time to book a flight to St. Louis from Chicago is 51 days out, which is when prices tend to be around R5 059. However, in the past 72 hours, people saw flights from Chicago for as low as R39 183.

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

There are 1 cabin classes available to choose from on Chicago to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Chicago to St. Louis flight prices changed over time?

As of December 2024, prices for Chicago to St. Louis flights are approximately 25% more expensive when compared to flights at the same time last year.

When to book flights from Chicago to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Chicago to St. Louis (CHI to STL) flight deals and tips

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

Direct flights

None
There are no direct flights from Chicago to St. Louis. There are no popular flight routes from Chicago to St. Louis.

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

    The distance between Chicago and Lambert-St Louis is about 421,6 km.

  • 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 are refreshed on a daily basis.

  • 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 required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Chicago to St. Louis?


Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Chicago to St. Louis . Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Chicago to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

Yes. momondo can track prices for Chicago to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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