₹6,481 Cheap Flights from Chicago (CHI) to St. Louis (STL)

View ₹6,481 flight on Sat, 20 Sep 2025Opens in a new window

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 ₹6,481 for one-way flights and ₹12,967 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 5 Aug - Wed, 20 Aug
ORD
Chicago
STL
St. Louis
₹12,967 Return, found 9 hours ago
₹12,967
Return
found 9 hours ago
Select American Airlines flight, departing Tue, 5 Aug from Chicago to St. Louis, returning Wed, 20 Aug, priced at ₹12,967 found 9 hours ago
United
Sat, 20 Sep - Sat, 4 Oct
ORD
Chicago
STL
St. Louis
₹12,967 Return, found 9 hours ago
₹12,967
Return
found 9 hours ago
Select United flight, departing Sat, 20 Sep from Chicago to St. Louis, returning Sat, 4 Oct, priced at ₹12,967 found 9 hours ago
American Airlines
Mon, 22 Sep - Sat, 4 Oct
ORD
Chicago
STL
St. Louis
₹13,225 Return, found 9 hours ago
₹13,225
Return
found 9 hours ago
Select American Airlines flight, departing Mon, 22 Sep from Chicago to St. Louis, returning Sat, 4 Oct, priced at ₹13,225 found 9 hours ago
American Airlines
Mon, 22 Sep - Mon, 6 Oct
ORD
Chicago
STL
St. Louis
₹13,477 Return, found 9 hours ago
₹13,477
Return
found 9 hours ago
Select American Airlines flight, departing Mon, 22 Sep from Chicago to St. Louis, returning Mon, 6 Oct, priced at ₹13,477 found 9 hours ago
American Airlines
Fri, 19 Sep - Sat, 4 Oct
ORD
Chicago
STL
St. Louis
₹15,111 Return, found 9 hours ago
₹15,111
Return
found 9 hours ago
Select American Airlines flight, departing Fri, 19 Sep from Chicago to St. Louis, returning Sat, 4 Oct, priced at ₹15,111 found 9 hours ago
Delta
Wed, 6 Aug - Sun, 17 Aug
ORD
Chicago
STL
St. Louis
₹15,145 Return, found 9 hours ago
₹15,145
Return
found 9 hours ago
Select Delta flight, departing Wed, 6 Aug from Chicago to St. Louis, returning Sun, 17 Aug, priced at ₹15,145 found 9 hours ago
Southern Airways Express
Sun, 21 Sep - Sat, 4 Oct
ORD
Chicago
STL
St. Louis
₹15,147 Return, found 9 hours ago
₹15,147
Return
found 9 hours ago
Select Southern Airways Express flight, departing Sun, 21 Sep from Chicago to St. Louis, returning Sat, 4 Oct, priced at ₹15,147 found 9 hours ago
Southern Airways Express
Mon, 4 Aug - Tue, 19 Aug
ORD
Chicago
STL
St. Louis
₹15,233 Return, found 9 hours ago
₹15,233
Return
found 9 hours ago
Select Southern Airways Express flight, departing Mon, 4 Aug from Chicago to St. Louis, returning Tue, 19 Aug, priced at ₹15,233 found 9 hours ago
American Airlines
Mon, 22 Sep - Sun, 5 Oct
ORD
Chicago
STL
St. Louis
₹15,369 Return, found 9 hours ago
₹15,369
Return
found 9 hours ago
Select American Airlines flight, departing Mon, 22 Sep from Chicago to St. Louis, returning Sun, 5 Oct, priced at ₹15,369 found 9 hours ago
Southern Airways Express
Sun, 21 Sep - Mon, 6 Oct
ORD
Chicago
STL
St. Louis
₹15,405 Return, found 9 hours ago
₹15,405
Return
found 9 hours ago
Select Southern Airways Express flight, departing Sun, 21 Sep from Chicago to St. Louis, returning Mon, 6 Oct, priced at ₹15,405 found 9 hours ago

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

August is typically the cheapest month to fly

From ₹7,794 - ₹20,867 per traveller.

Graph displaying average flight prices per month

Flight from Chicago to St. Louis route information
Origin airport
O'Hare Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, United
Return price
₹12,967
Distance
413 km

Illinois to St. Louis Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Illinois to St. Louis will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring St. Louis.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with CHI to STL flights that won’t make your bank account wince. Ready to temporarily leave behind Illinois for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to STL with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

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 ₹12,967. 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 cancelled online, but whether you are charged a fee depends on your airline. If you do need to cancel your holiday, 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 kilometres 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.

Explore a world of travel with Expedia

Chicago Airports

Chicago

O'Hare Intl. to St. Louis
₹12,967.00
*Available to Expedia members.