RM473 Cheap Flights from Chicago (ORD) to St. Louis (STL)

View RM473 flight on Wed, 15 Oct 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at RM473 for one-way flights and RM945 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southern Airways Express
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM945 Return, found 16 hours ago
RM945
Return
found 16 hours ago
Select Southern Airways Express flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM945 found 16 hours ago
Delta
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,318 Return, found 16 hours ago
RM1,318
Return
found 16 hours ago
Select Delta flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,318 found 16 hours ago
Delta
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,342 Return, found 16 hours ago
RM1,342
Return
found 16 hours ago
Select Delta flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,342 found 16 hours ago
Southern Airways Express
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,395 Return, found 16 hours ago
RM1,395
Return
found 16 hours ago
Select Southern Airways Express flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,395 found 16 hours ago
Southern Airways Express
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,419 Return, found 16 hours ago
RM1,419
Return
found 16 hours ago
Select Southern Airways Express flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,419 found 16 hours ago
American Airlines
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,436 Return, found 16 hours ago
RM1,436
Return
found 16 hours ago
Select American Airlines flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,436 found 16 hours ago
American Airlines
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,460 Return, found 16 hours ago
RM1,460
Return
found 16 hours ago
Select American Airlines flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,460 found 16 hours ago
Delta
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,473 Return, found 16 hours ago
RM1,473
Return
found 16 hours ago
Select Delta flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,473 found 16 hours ago
Delta
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,497 Return, found 16 hours ago
RM1,497
Return
found 16 hours ago
Select Delta flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,497 found 16 hours ago
United
Wed, 15 Oct - Sun, 19 Oct
ORD
Chicago
STL
St. Louis
RM1,844 Return, found 16 hours ago
RM1,844
Return
found 16 hours ago
Select United flight, departing Wed, 15 Oct from Chicago to St. Louis, returning Sun, 19 Oct, priced at RM1,844 found 16 hours ago

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

September is typically the cheapest month to fly

From RM 324 - RM 1,595 per traveller.
Chicago to St. Louis route information
Origin airport
O'Hare Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta, Southern Airways Express, United
Return price
RM945
Distance
413 km
Average flight time
1 hour 23 mins

Perfect flights from Chicago to St. Louis

Your Journey from Chicago to St. Louis

Start your unforgettable journey with Expedia. Our broad selection of flights from Chicago to St. Louis 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 Southern Airways Express, Delta, American Airlines, United, Contour Airlines. Our selection of flights from O'Hare Intl. to Lambert-St. Louis 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 Chicago to St. Louis Flights

Experience the joy of finding cheap flights from O'Hare Intl. to Lambert-St. Louis Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from RM473 and roundtrip prices from RM945*.
 

Pre-Flight Essentials

Ensure a smooth journey from Chicago to St. Louis 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 St. Louis

Picture yourself stepping off the plane in St. Louis and immersing yourself in the unique atmosphere of St. Louis. 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 Chicago to St. Louis 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 Chicago to St. Louis.
 

Beyond the Flight – Exploring St. Louis

With Expedia, your adventure extends beyond the flight. Explore St. Louis 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 Chicago to St. Louis 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 Chicago to St. Louis 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 ORD to STL?
The lowest price advertised for a round-trip flight between O'Hare Intl. Airport (ORD) and STL is RM945. But you better act quick. This price is taken from fares quoted within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from O'Hare Intl. Airport (ORD) to St. Louis Lambert International Airport?
When it comes to cancellation fees, every airline has its own terms and conditions. If you decide to cancel your trip, head to our Customer Service Portal.
How do I find cheap flights from O'Hare Intl. Airport (ORD) to 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 O'Hare Intl. Airport (ORD) to St. Louis Lambert International Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from O'Hare Airport to Lambert Field?
You might not get through a whole movie on this flight — it's just 420 kilometres from Chicago to St. Louis. Sit down, order a snack and you'll be in St. Louis in no time.
Which airlines fly direct from O'Hare Airport to St. Louis Lambert International Airport?
United Airlines (UA) is one of the preferred choices for many travellers flying between ORD and St. Louis Lambert International Airport. Choose from the 208 flights it offers on this route each month. Operating 117 flights a month on this route, American Airlines (AA) is another good choice.
Are O'Hare Intl. Airport (ORD) to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
Booking last minute from O'Hare Intl. Airport (ORD) to St. Louis Lambert International Airport can be hit-or-miss. It is possible to find a bargain, but then again, you could miss out! If you'd prefer to play it safe and start your trip planning early on, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines advertise their prices that far in advance. Our suggestion? Check back often as updates are made frequently.

Explore a world of travel with Expedia

*Available to Expedia members.