S$99 Cheap Flights from St. Louis to Chicago

View S$99 flight on Sat, 9 Aug, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Chicago O'Hare Intl. Airport (ORD)

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Cheap Flights from St. Louis to Chicago (STL-ORD)

Prices were available within the past 7 days and start at S$99 for one-way flights and S$196 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$196 Return, found 1 day ago
S$196
Return
found 1 day ago
Select American Airlines flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$196 found 1 day ago
United
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$196 Return, found 1 day ago
S$196
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$196 found 1 day ago
United
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$197 Return, found 1 day ago
S$197
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$197 found 1 day ago
United
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$213 Return, found 1 day ago
S$213
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$213 found 1 day ago
American Airlines
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$228 Return, found 1 day ago
S$228
Return
found 1 day ago
Select American Airlines flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$228 found 1 day ago
Delta
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$228 Return, found 1 day ago
S$228
Return
found 1 day ago
Select Delta flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$228 found 1 day ago
American Airlines
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$229 Return, found 1 day ago
S$229
Return
found 1 day ago
Select American Airlines flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$229 found 1 day ago
United
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$230 Return, found 1 day ago
S$230
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$230 found 1 day ago
United
Wed, 13 Aug - Wed, 20 Aug
STL
St. Louis
ORD
Chicago
S$235 Return, found 1 day ago
S$235
Return
found 1 day ago
Select United flight, departing Wed, 13 Aug from St. Louis to Chicago, returning Wed, 20 Aug, priced at S$235 found 1 day ago
Southern Airways Express
Sun, 3 Aug - Sun, 10 Aug
STL
St. Louis
ORD
Chicago
S$260 Return, found 6 days ago
S$260
Return
found 6 days ago
Select Southern Airways Express flight, departing Sun, 3 Aug from St. Louis to Chicago, returning Sun, 10 Aug, priced at S$260 found 6 days ago

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

September is typically the cheapest month to fly

From S$119 - S$330 per traveller.

Graph displaying average flight prices per month

St. Louis to Chicago route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
O'Hare Intl.
Airlines serving
American Airlines, Delta, United
Return price
S$196
Distance
413 km
Average flight time
1 hour 24 mins

Perfect flights from St. Louis to Chicago

Your Journey from St. Louis to Chicago

Start your unforgettable journey with Expedia. Our broad selection of flights from St. Louis to Chicago caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including American Airlines, United, Delta, Southern Airways Express. Our selection of flights from Lambert-St. Louis Intl. to O'Hare Intl. caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with St. Louis to Chicago Flights

Experience the joy of finding cheap flights from Lambert-St. Louis Intl. to O'Hare Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$99 and roundtrip prices from S$196*.
 

Pre-Flight Essentials

Ensure a smooth journey from St. Louis to Chicago with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Chicago

Picture yourself stepping off the plane in Chicago and immersing yourself in the unique atmosphere of Chicago. From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your St. Louis to Chicago Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from St. Louis to Chicago.
 

Beyond the Flight – Exploring Chicago

With Expedia, your adventure extends beyond the flight. Explore Chicago at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from St. Louis to Chicago with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from St. Louis to Chicago with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from St. Louis Lambert International Airport to O'Hare Intl. Airport (ORD)?
Based on airfares listed within the last 7 days on Expedia for flights departing within the next year, round-trip flights from Lambert-St. Louis Intl. Airport (STL) to ORD start from S$196. Make your booking today to get the best price for your trip. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Lambert-St. Louis Intl. Airport (STL) to O'Hare Intl. Airport (ORD)?
Each air carrier has its own terms and conditions. If you decide to cancel your getaway, visit our Customer Service Portal.
How do I find cheap flights from STL to ORD 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 STL to O'Hare Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lambert Field to ORD?
With a flight distance of 420 kilometres, it's only a short hop from St. Louis Lambert International Airport to ORD. It might be a quick journey, but it's still worth bringing something to read.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to O'Hare Airport?
There are a few airlines that fly directly from Lambert-St. Louis Intl. Airport (STL) to O'Hare Airport. United Airlines (UA) is a popular option, offering 208 flights each month. Like some more options? Check out the airfares with American Airlines (AA). This carrier offers 121 monthly flights between these airports.
Are Lambert Field to ORD flight tickets cheaper when they're purchased at the last minute?
Booking your trip from St. Louis Lambert International Airport to O'Hare Airport last minute could be your ticket to a fantastic deal. However, you might miss out on a flight altogether! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the best bargains as far ahead as 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

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