$48 Cheap Flights from Chicago to St. Louis (CHI to STL)

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Cheap flight deals from Chicago to St. Louis Starting at $48

For as little as $48, you can take your next adventure to St. Louis without breaking the bank. Choose between one-way and return tickets from Chicago below.

One way
Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

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

These price trend charts carefully monitor and predict how flight prices from Chicago to St. Louis will change. Keep a close eye on them to understand when the best time to buy your tickets is.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Find cheap airlines flights from Chicago to St. Louis

Compare prices from various providers below to understand which option best suits your travel needs, before enjoying a comfortable journey with a trusted airline from Chicago to St. Louis.

American Airlines

From $48

Southwest Airlines

From $48

Frontier Airlines

From $60

United Airlines

From $73

Delta Air Lines

From $80

Southern Airways Express

From $80

Alaska Airlines

From $257

Find more flights and airlines

Alternative Cheap Routes from Chicago to St. Louis

Did you know that you can save money and time on an alternative route from Chicago to St. Louis? Check out some of the different available routes below.

Cheapest
ORD
09:55 am
1h 28m
Nonstop
STL
11:23 am
O'Hare International Airport - St. Louis Lambert International Airport
Tue, Jan 14American Airlines
$48
MDW
11:05 am
1h 10m
Nonstop
STL
12:15 pm
Midway International Airport - St. Louis Lambert International Airport
Tue, Jan 14Southwest Airlines
$48
MDW
11:05 am
1h 10m
Nonstop
STL
12:15 pm
Midway International Airport - St. Louis Lambert International Airport
Tue, Jan 14Southwest Airlines
$48
Find More Flights

Frequently Asked Questions

When are flight tickets from Chicago (CHI) to St. Louis (STL) the cheapest?
Airlines adjust prices for flights from Chicago to St. Louis based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
How much do flights from Chicago (CHI) to St. Louis (STL) cost?
According to Trip.com's data, the lowest price is around $212.
How long does it take to fly from Chicago (CHI) to St. Louis (STL) and what is the distance?
It takes around 1 hour 57 minutes to fly from Chicago (CHI) to St. Louis (STL).
What is the transportation method from the main airport to downtown in St. Louis?
- The distance from St. Louis Lambert International Airport to downtown is about 20 km. It takes about 40 minutes by taxi.
What are the most popular airlines that fly from Chicago (CHI) to St. Louis (STL)?
Airlines with flights from Chicago (CHI) to St. Louis (STL): American Airlines, Southwest Airlines, Alaska Airlines, Royal Jordanian, Qatar Airways, United Airlines, Iberia and All Nippon Airways.

How to find a cheap flight from Chicago to St. Louis

Understanding the common pitfalls when booking your flight tickets can help you save massively when it comes time to fly. We’ve listed our six essential steps to keep in mind when you’re booking flight tickets to help you find the best price.

Book Early

Once prices are gone, they're gone. Lock in deals while you can!

Compare Flight Prices

Compare prices on travel agency and airline websites.

Look Out for Deals

Check airline and travel agency websites for latest flight deals

Check One-way Fares

Buying two cheap one-way flights can sometimes be a better deal than a round-trip.

Try Different Dates

Flying during the week, early in the morning, or late at night can help save money.

Use the Trip.com App

Save up to £10 per person when booking your flights on Trip.com

Flight Info | Chicago to St. Louis

Cheapest nonstop flight price	$47
Cheapest round-trip ticket price	$96
Off-season for travel	November
Peak season for travel	September
Flight distance	421.66 km
Average flight time	1 hour 57 minutes
Popular airline	Southern Airways Express