Cheap Flights From O'Hare Intl. (ORD) To Lambert-St. Louis Intl. (STL)

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

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were CA $127 round trip and CA $125 one way. Prices and availability subject to change. Additional terms may apply.

Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $127 Roundtrip, found 1 day ago
CA $127
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $127 found 1 day ago
Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $212 Roundtrip, found 1 day ago
CA $212
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $212 found 1 day ago
Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $244 Roundtrip, found 1 day ago
CA $244
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $244 found 1 day ago
Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $249 Roundtrip, found 1 day ago
CA $249
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $249 found 1 day ago
Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $255 Roundtrip, found 1 day ago
CA $255
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $255 found 1 day ago
Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $291 Roundtrip, found 1 day ago
CA $291
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $291 found 1 day ago
Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $304 Roundtrip, found 1 day ago
CA $304
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $304 found 1 day ago
Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $306 Roundtrip, found 1 day ago
CA $306
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $306 found 1 day ago
Thu, Aug. 28 - Mon, Sep. 1
ORD
Chicago
STL
St. Louis
CA $315 Roundtrip, found 3 days ago
CA $315
Roundtrip
found 3 days ago
Select Southern Airways Express flight, departing Thu, Aug. 28 from Chicago to St. Louis, returning Mon, Sep. 1, priced at CA $315 found 3 days ago
Sat, Sep. 27 - Tue, Sep. 30
ORD
Chicago
STL
St. Louis
CA $329 Roundtrip, found 1 day ago
CA $329
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep. 27 from Chicago to St. Louis, returning Tue, Sep. 30, priced at CA $329 found 1 day ago

Frequently asked questions

Are there direct flights from O'Hare Intl. Airport (ORD) to STL?
If you'd love to venture from O'Hare Airport to Lambert-St. Louis Intl. Airport (STL) as fast as possible, you'll be happy to know multiple airlines operate nonstop flights. Choose your favorite seat with United Airlines or American Airlines.
What airlines fly from O'Hare Airport to Lambert Field?
You have a choice of a few airlines that advertise direct flights between Chicago and St. Louis. United Airlines (UA) is one of the most reputable. This carrier operates approximately 212 flights every month. Don't forget to also look into the deals available through American Airlines (AA). Another leading carrier, it operates 165 flights each month on the Chicago to St. Louis route. Compare the two to find your perfect fare.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Chicago (ORD)

Travelers at ORD love to visit these top cities. Roam to the top destinations from Chicago (ORD) today with the cheap prices from Travelocity!

Popular Flight Routes from St. Louis (STL)

Travelers at STL love to visit these top cities. Roam to the top destinations from St. Louis(STL) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.