฿3,835 Cheap Flights from Chicago (ORD) to St. Louis (STL)

View ฿3,835 flight on Thu, 9 Apr 2026Opens in a new window

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

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ฿3,835 for one-way flights and ฿7,000 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿7,000 Return, found 1 day ago
฿7,000
Return
found 1 day ago
Select American Airlines flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿7,000 found 1 day ago
American Airlines
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿7,635 Return, found 1 day ago
฿7,635
Return
found 1 day ago
Select American Airlines flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿7,635 found 1 day ago
American Airlines
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿7,955 Return, found 1 day ago
฿7,955
Return
found 1 day ago
Select American Airlines flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿7,955 found 1 day ago
Delta
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿8,520 Return, found 1 day ago
฿8,520
Return
found 1 day ago
Select Delta flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿8,520 found 1 day ago
American Airlines
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿8,585 Return, found 1 day ago
฿8,585
Return
found 1 day ago
Select American Airlines flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿8,585 found 1 day ago
American Airlines
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿8,750 Return, found 1 day ago
฿8,750
Return
found 1 day ago
Select American Airlines flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿8,750 found 1 day ago
American Airlines
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿8,775 Return, found 1 day ago
฿8,775
Return
found 1 day ago
Select American Airlines flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿8,775 found 1 day ago
American Airlines
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿8,835 Return, found 1 day ago
฿8,835
Return
found 1 day ago
Select American Airlines flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿8,835 found 1 day ago
American Airlines
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿8,935 Return, found 1 day ago
฿8,935
Return
found 1 day ago
Select American Airlines flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿8,935 found 1 day ago
United
Thu, 9 Apr - Wed, 6 May
ORD
Chicago
STL
St. Louis
฿9,160 Return, found 1 day ago
฿9,160
Return
found 1 day ago
Select United flight, departing Thu, 9 Apr from Chicago to St. Louis, returning Wed, 6 May, priced at ฿9,160 found 1 day ago

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

September is typically the cheapest month to fly

From ฿2,465 - ฿10,920 per traveller.
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
฿7,000
Distance
413 km
Average flight time
1 hour 27 mins

Perfect flights from Chicago to St. Louis

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Chicago to St. Louis. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible O'Hare Intl. to Lambert-St. Louis Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿3,835 and roundtrip prices from ฿7,000. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Lambert-St. Louis Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in St. Louis.

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 ฿7,000. 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.
*Available to Expedia members.