฿3,500 Cheap Flights from Chicago (ORD) to St. Louis (STL)

View ฿3,500 flight on Sat, 25 Apr 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at ฿3,500 for one-way flights and ฿11,825 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 12 Sept - Sun, 13 Sept
ORD
Chicago
STL
St. Louis
฿11,825 Return, found 1 day ago
฿11,825
Return
found 1 day ago
Select Delta flight, departing Sat, 12 Sept from Chicago to St. Louis, returning Sun, 13 Sept, priced at ฿11,825 found 1 day ago
Delta
Thu, 11 Jun - Thu, 23 Jul
ORD
Chicago
STL
St. Louis
฿12,055 Return, found 4 days ago
฿12,055
Return
found 4 days ago
Select Delta flight, departing Thu, 11 Jun from Chicago to St. Louis, returning Thu, 23 Jul, priced at ฿12,055 found 4 days ago
United
Thu, 11 Jun - Thu, 23 Jul
ORD
Chicago
STL
St. Louis
฿12,520 Return, found 4 days ago
฿12,520
Return
found 4 days ago
Select United flight, departing Thu, 11 Jun from Chicago to St. Louis, returning Thu, 23 Jul, priced at ฿12,520 found 4 days ago
Delta
Sat, 12 Sept - Sun, 13 Sept
ORD
Chicago
STL
St. Louis
฿12,655 Return, found 1 day ago
฿12,655
Return
found 1 day ago
Select Delta flight, departing Sat, 12 Sept from Chicago to St. Louis, returning Sun, 13 Sept, priced at ฿12,655 found 1 day ago
Delta
Thu, 11 Jun - Thu, 23 Jul
ORD
Chicago
STL
St. Louis
฿12,745 Return, found 4 days ago
฿12,745
Return
found 4 days ago
Select Delta flight, departing Thu, 11 Jun from Chicago to St. Louis, returning Thu, 23 Jul, priced at ฿12,745 found 4 days ago
Delta
Thu, 11 Jun - Thu, 23 Jul
ORD
Chicago
STL
St. Louis
฿12,880 Return, found 4 days ago
฿12,880
Return
found 4 days ago
Select Delta flight, departing Thu, 11 Jun from Chicago to St. Louis, returning Thu, 23 Jul, priced at ฿12,880 found 4 days ago
American Airlines
Sat, 12 Sept - Sun, 13 Sept
ORD
Chicago
STL
St. Louis
฿12,985 Return, found 1 day ago
฿12,985
Return
found 1 day ago
Select American Airlines flight, departing Sat, 12 Sept from Chicago to St. Louis, returning Sun, 13 Sept, priced at ฿12,985 found 1 day ago
United
Sat, 12 Sept - Sun, 13 Sept
ORD
Chicago
STL
St. Louis
฿13,020 Return, found 1 day ago
฿13,020
Return
found 1 day ago
Select United flight, departing Sat, 12 Sept from Chicago to St. Louis, returning Sun, 13 Sept, priced at ฿13,020 found 1 day ago
United
Thu, 11 Jun - Thu, 23 Jul
ORD
Chicago
STL
St. Louis
฿13,050 Return, found 4 days ago
฿13,050
Return
found 4 days ago
Select United flight, departing Thu, 11 Jun from Chicago to St. Louis, returning Thu, 23 Jul, priced at ฿13,050 found 4 days ago
Delta
Thu, 11 Jun - Thu, 23 Jul
ORD
Chicago
STL
St. Louis
฿13,055 Return, found 4 days ago
฿13,055
Return
found 4 days ago
Select Delta flight, departing Thu, 11 Jun from Chicago to St. Louis, returning Thu, 23 Jul, priced at ฿13,055 found 4 days ago

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

September is typically the cheapest month to fly

From ฿2,485 - ฿11,009 per traveller.

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 ฿11,825. 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.

Travel information

Origin airport
O'Hare Intl.
Destination airport
Lambert-St. Louis Intl.
Return price
฿11,825
Distance
413 km
Average flight time
1 hour 19 mins

Book with confidence

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 ฿3,500 and roundtrip prices from ฿11,825. 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.
Perfect flights from Chicago to St. Louis
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