$59 Cheap United flights from St. Louis to Chicago (STL to ORD)

Find The Best Day To Fly from St. Louis to Chicago

Flexible dates

Amazing United STL to ORD Flight Deals

The cheapest flights to O'Hare Intl. found within the past 7 days were $117 round trip and $59 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Apr 16 - Thu, Apr 17
STL
St. Louis
ORD
Chicago
$117 Roundtrip, just found
$117
Roundtrip
just found
Select United flight, departing Wed, Apr 16 from St. Louis to Chicago, returning Thu, Apr 17, priced at $117 just found
Wed, Apr 16 - Thu, Apr 17
STL
St. Louis
ORD
Chicago
$119 Roundtrip, just found
$119
Roundtrip
just found
Select United flight, departing Wed, Apr 16 from St. Louis to Chicago, returning Thu, Apr 17, priced at $119 just found
Wed, Apr 16 - Thu, Apr 17
STL
St. Louis
ORD
Chicago
$132 Roundtrip, just found
$132
Roundtrip
just found
Select United flight, departing Wed, Apr 16 from St. Louis to Chicago, returning Thu, Apr 17, priced at $132 just found
Wed, Apr 16 - Thu, Apr 17
STL
St. Louis
ORD
Chicago
$134 Roundtrip, just found
$134
Roundtrip
just found
Select United flight, departing Wed, Apr 16 from St. Louis to Chicago, returning Thu, Apr 17, priced at $134 just found
Thu, Apr 10 - Fri, Apr 11
STL
St. Louis
ORD
Chicago
$149 Roundtrip, found 13 hours ago
$149
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Apr 10 from St. Louis to Chicago, returning Fri, Apr 11, priced at $149 found 13 hours ago
Wed, Apr 16 - Thu, Apr 17
STL
St. Louis
ORD
Chicago
$165 Roundtrip, just found
$165
Roundtrip
just found
Select United flight, departing Wed, Apr 16 from St. Louis to Chicago, returning Thu, Apr 17, priced at $165 just found

ORD From STL Economy Coach Packages on Similar Airlines

Price found within the past 48 hours. Click for updated prices.
Best Western River North Hotel

Best Western River North Hotel

2.5 out of 5
per person
Mar 23 - Mar 29
found 1 day ago
Roundtrip flight included
St. Louis (STL) to Chicago (ORD)
Congress Plaza Hotel

Congress Plaza Hotel

3.5 out of 5
Save 100% on your flight
per person
Mar 23 - Mar 29
found 1 day ago
Roundtrip flight included
St. Louis (STL) to Chicago (ORD)
Hotel Felix River North/Magnificent Mile

Hotel Felix River North/Magnificent Mile

4 out of 5
per person
Mar 22 - Mar 29
found 1 day ago
Roundtrip non-stop flight included
St. Louis (STL) to Chicago (ORD)
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Frequently asked questions

Can I catch a flight from Lambert Field to O'Hare Intl. Airport (ORD) right now?
For information on any present ORD quarantine requirements and travel advice, visit our Covid-19 Travel Advisor. Look before you book your flight, so you don’t get caught out en route.
What terminal is United Airlines at St. Louis Lambert International Airport?
If you’re flying with United Airlines from STL, you’ll usually board from terminal 1. If you’re jetting to O’Hare Intl. Airport (ORD) from here, you’ll probably be disembarking at terminal 1.
Are there United Airlines non-stop flights from STL to ORD?
With United Airlines offering nonstop flights from STL to O’Hare Intl. Airport (ORD), your next inspiring adventure is a plane ride away. Wave goodbye to the stress, hassle and baggage hiccups that are often associated with stopovers, and reserve your seat today.
How long is a United Airlines flight from STL to ORD?
Tailwinds, headwinds, bad weather … They’re just some factors that are relevant to how long your time in the air will last. However, a flight from Lambert-St. Louis Intl. Airport (STL) to O’Hare Airport with United Airlines takes around 3 hours and 25 minutes, so you’ll have landed and be in getaway mode before you know it.
What type of aircraft does United Airlines fly from STL to ORD?
Reserved a flight with United Airlines from STL to ORD? The Canadair (Bombardier) Regional Jet 550 and the Bombardier CRJ are the airplane models that usually operate on this air route.
How many direct and indirect flights does United Airlines fly from STL to ORD?
United Airlines currently operates around 5 flights per day from STL to ORD.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to ORD, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity 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 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.
CarrierFlightDepart STLArrive ORDSun
2/23		Mon
2/24		Tue
2/25		Wed
2/26		Thu
2/27		Fri
2/28		Sat
3/1		Stops
UA441206:30 am08:01 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
UA418308:05 am09:36 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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UA442610:18 am11:50 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
UA438311:20 am00:52 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
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UA456601:03 pm02:35 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
UA363303:45 pm05:10 pmCheck Fare
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UA115605:36 pm06:55 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
UA184003:32 pm04:54 pm
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0 Stops
UA452403:32 pm04:57 pm
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0 Stops

Discover our best United flight from St. Louis STL to Chicago ORD 

To find the best deals on flights to St. Louis from Chicago with United, just enter your travel dates, filter by United, and hit search. You’ll find 7 flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from St. Louis STL to Chicago ORD with United 

If you’re planning a round trip, booking return flights with United is usually the most cost-effective option. With airfares ranging from $117 to $165, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way United flights from St. Louis STL to Chicago ORD 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way United flight from St. Louis to Chicago costs from $59. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Chicago ORD from  St. Louis STL with United 

To find a cheap United flight from St. Louis STL to Chicago ORD, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on United flights from St. Louis STL to Chicago ORD 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as April, or if you book a flight with a stopover. 

 

Find nonstop flights from St. Louis STL to Chicago ORD with United 

If you’re keen to be on Chicago soil fast, don’t waste time with a stopover—filter your search results to show direct United flights only. The journey takes around 1 hour(s) 19 min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for United flights from St. Louis STL to Chicago ORD 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Chicago ORD from  St. Louis STL with United on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

United Airports
Hop on a(n) United flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
ORDUSAO'Hare Intl.227
DENUSADenver Intl.226
IAHUSAGeorge Bush Intercontinental136
IADUSAWashington Dulles Intl.100
SFOUSASan Francisco Intl.64
LAXUSALos Angeles Intl.23
EWRUSALiberty Intl.20
FRADEUFrankfurt Intl.19
NRTJPNNarita Intl.19
PEKCHNCapital Intl.16

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9/10 Wonderful! (1,738 reviews)
"I would go there again. Convenient to getting to stores and airport. Staff was fantastic."

Reviewed on Feb 18, 2025

Hampton Inn Chicago-O'Hare International Airport
Lowest nightly price found within the past 24 hours based on a 1 night stay for 2 adults. Prices and availability subject to change. Additional terms may apply.
*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.