Cheap Flights from Chicago (ORD) to St. Louis (STL) from HK$594~

View HK$594 flight on Wed, 27 Aug 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at HK$594 for one-way flights and HK$1,221 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,221 Return, found 4 days ago
HK$1,221
Return
found 4 days ago
Select American Airlines flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,221 found 4 days ago
United
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,221 Return, found 4 days ago
HK$1,221
Return
found 4 days ago
Select United flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,221 found 4 days ago
American Airlines
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,331 Return, found 4 days ago
HK$1,331
Return
found 4 days ago
Select American Airlines flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,331 found 4 days ago
Southern Airways Express
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,397 Return, found 4 days ago
HK$1,397
Return
found 4 days ago
Select Southern Airways Express flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,397 found 4 days ago
United
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,425 Return, found 4 days ago
HK$1,425
Return
found 4 days ago
Select United flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,425 found 4 days ago
Southern Airways Express
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,441 Return, found 4 days ago
HK$1,441
Return
found 4 days ago
Select Southern Airways Express flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,441 found 4 days ago
United
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,489 Return, found 4 days ago
HK$1,489
Return
found 4 days ago
Select United flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,489 found 4 days ago
American Airlines
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,501 Return, found 4 days ago
HK$1,501
Return
found 4 days ago
Select American Airlines flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,501 found 4 days ago
Southern Airways Express
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,507 Return, found 4 days ago
HK$1,507
Return
found 4 days ago
Select Southern Airways Express flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,507 found 4 days ago
Delta
Mon, 8 Sep - Wed, 10 Sep
ORD
Chicago
STL
St. Louis
HK$1,846 Return, found 4 days ago
HK$1,846
Return
found 4 days ago
Select Delta flight, departing Mon, 8 Sep from Chicago to St. Louis, returning Wed, 10 Sep, priced at HK$1,846 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 HK$659 - HK$2,361 per traveller.

Graph displaying average flight prices per month

Chicago to St. Louis route information
Origin airport
O'Hare Intl.
Destination airport
Lambert-St. Louis Intl.
Return price
HK$1,221
Distance
413 km
Average flight time
1 hour 22 mins

Flights from Chicago to St. Louis

Book cheap flights from Chicago (ORD) to St. Louis (STL) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from Chicago (ORD) to St. Louis (STL) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Chicago (ORD) to St. Louis (STL) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your St. Louis flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in St. Louis and things to do in St. Louis for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to St. Louis more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is HK$594 now!

 

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 HK$1,221. 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 kilometers 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 travelers 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.

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