Cheap Flights from St. Louis (STL) to Chicago (ORD) from HK$648~

View HK$648 flight on Mon, 8 Dec 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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Find Cheap Flights from St. Louis (STL) to Chicago (ORD)

Prices were available within the past 7 days and start at HK$648 for one-way flights and HK$1,252 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,252 Return, found 5 days ago
HK$1,252
Return
found 5 days ago
Select Delta flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,252 found 5 days ago
Delta
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,306 Return, found 5 days ago
HK$1,306
Return
found 5 days ago
Select Delta flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,306 found 5 days ago
United
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,414 Return, found 5 days ago
HK$1,414
Return
found 5 days ago
Select United flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,414 found 5 days ago
American Airlines
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,455 Return, found 5 days ago
HK$1,455
Return
found 5 days ago
Select American Airlines flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,455 found 5 days ago
United
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,455 Return, found 5 days ago
HK$1,455
Return
found 5 days ago
Select United flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,455 found 5 days ago
American Airlines
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,456 Return, found 5 days ago
HK$1,456
Return
found 5 days ago
Select American Airlines flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,456 found 5 days ago
Delta
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,500 Return, found 5 days ago
HK$1,500
Return
found 5 days ago
Select Delta flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,500 found 5 days ago
Delta
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,532 Return, found 5 days ago
HK$1,532
Return
found 5 days ago
Select Delta flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,532 found 5 days ago
Delta
Mon, 8 Dec - Wed, 7 Jan
STL
St. Louis
ORD
Chicago
HK$1,585 Return, found 5 days ago
HK$1,585
Return
found 5 days ago
Select Delta flight, departing Mon, 8 Dec from St. Louis to Chicago, returning Wed, 7 Jan, priced at HK$1,585 found 5 days ago
Southern Airways Express
Thu, 30 Oct - Fri, 31 Oct
STL
St. Louis
ORD
Chicago
HK$3,128 Return, found 1 day ago
HK$3,128
Return
found 1 day ago
Select Southern Airways Express flight, departing Thu, 30 Oct from St. Louis to Chicago, returning Fri, 31 Oct, priced at HK$3,128 found 1 day ago

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

October is typically the cheapest month to fly

From HK$599 - HK$2,076 per traveller.
St. Louis to Chicago route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
O'Hare Intl.
Airlines serving
American Airlines, Delta, Southern Airways Express, United
Return price
HK$1,252
Distance
413 km
Average flight time
1 hour 22 mins

Flights from St. Louis to Chicago

Book cheap flights from St. Louis (STL) to Chicago (ORD) 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 St. Louis (STL) to Chicago (ORD) 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 St. Louis (STL) to Chicago (ORD) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

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

If you would like to book flights to Chicago more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Chicago is HK$648 now!

 

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 HK$1,252. 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 kilometers, 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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