CA $63 Cheap Flights from Chicago (CHI) to St. Louis (STL)

Popular airlines from Chicago to St. Louis, MO (STL-Lambert-St. Louis Intl.)

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

Prices were available within the past 7 days and start at CA $63 for one-way flights and CA $125 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
American Airlines
American Airlines
American Airlines
Delta
United
American Airlines
American Airlines
Southern Airways Express
United

Find the cheapest month to fly from Chicago (CHI) to St. Louis (STL)

October is typically the cheapest month to fly

From CA $107 - CA $401 per traveller.

Graph displaying average flight prices per month

Flight from Chicago to St. Louis (ORD - STL) route information
Origin airport
O'Hare Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Southern Airways Express, United
Roundtrip price
CA $125
Distance
413 km

Illinois to St. Louis Flights

The easy way to book your flights from Chicago to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Chicago whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Chicago to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from CHI-All Airports, CHI to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Chicago to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Chicago currently is just CA $125 rising to CA $294.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Chicago 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from Chicago, IL (CHI-All Airports) to St. Louis Lambert International Airport?
Based on fares advertised within the last 7 days on Expedia for flights departing within the next year, round-trip journeys between Chicago, IL (CHI-All Airports) and Lambert Field start from CA $125. Book today to get the best price for your journey. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Chicago, IL (CHI-All Airports) to Lambert Field?
Most flights can be canceled online, but whether you are charged a fee depends on your airline. If you do need to cancel your vacation, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Chicago, IL (CHI-All Airports) to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Chicago, IL (CHI-All Airports) to STL flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Chicago, IL (CHI-All Airports) to Lambert-St. Louis Intl. Airport (STL)?
Forget about a movie marathon on this flight — it's only 400 kilometers from Illinois to St. Louis. Sit down, buckle up and you'll be in St. Louis in next to no time.
Which airlines fly direct from Chicago, IL (CHI-All Airports) to St. Louis Lambert International Airport?
A leading airline that operates on the route from Chicago, IL (CHI-All Airports) to St. Louis Lambert International Airport is Southwest Airlines (WN). It offers 208 flights every month. Like more options? Have a look at the ticket prices from United Airlines (UA). This carrier offers 208 monthly flights between these airports.
Are Chicago, IL (CHI-All Airports) to STL flight tickets cheaper when they're purchased at the last minute?
Tickets from Chicago, IL (CHI-All Airports) to Lambert Field are available up to a year before departure on Expedia. And although you may score great last-minute deal, it's never something you can count on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid getting trapped in the dreaded middle seat! We're constantly updating our fares to bring you the biggest bargains, so check back often for all the latest specials.

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