STL - ORD

Find cheap flights from St. Louis to Chicago

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KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Chicago, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Chicago, as well as popular online travel agencies
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Flights Deals
Expert advice
Useful Info
Flights Deals

Cheap Flight Deals from St. Louis to Chicago (STL-ORD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from St. Louis to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from St. Louis to O'Hare Intl

KAYAK's recommended return flight deals from the most popular airlines that fly from St. Louis to O'Hare Intl.
Discover the best prices for you by selecting your travel dates on KAYAK.
American Airlines Logo
STL-ORD
1h 19mdirect
American Airlines Logo
ORD-STL
1h 16mdirect
American Airlines
Find Deal
Qatar Airways Logo
STL-ORD
1h 24mdirect
Qatar Airways Logo
ORD-STL
1h 18mdirect
Qatar Airways
Find Deal
Air Canada Logo
STL-ORD
1h 30mdirect
Air Canada Logo
ORD-STL
1h 35mdirect
Air Canada
Find Deal
Japan Airlines Logo
STL-ORD
1h 19mdirect
Japan Airlines Logo
ORD-STL
1h 26mdirect
Japan Airlines
Find Deal
Aer Lingus Logo
STL-ORD
1h 19mdirect
Aer Lingus Logo
ORD-STL
1h 16mdirect
Aer Lingus
Find Deal
Austrian Airlines Logo
STL-ORD
1h 32mdirect
Austrian Airlines Logo
ORD-STL
1h 33mdirect
Austrian Airlines
Find Deal
Emirates Logo
STL-ORD
1h 32mdirect
Emirates Logo
ORD-STL
1h 30mdirect
Emirates
Find Deal
Copa Airlines Logo
STL-ORD
1h 25mdirect
Copa Airlines Logo
ORD-STL
1h 27mdirect
Copa Airlines
Find Deal
Air New Zealand Logo
STL-ORD
1h 30mdirect
Air New Zealand Logo
ORD-STL
1h 35mdirect
Air New Zealand
Find Deal
United Airlines Logo
STL-ORD
1h 30mdirect
United Airlines Logo
ORD-STL
1h 35mdirect
United Airlines
Find Deal
Alaska Airlines Logo
STL-ORD
1h 19mdirect
Alaska Airlines Logo
ORD-STL
1h 16mdirect
Alaska Airlines
Find Deal
Avianca Logo
STL-ORD
1h 31mdirect
Avianca Logo
ORD-STL
1h 33mdirect
Avianca
Find Deal
Cathay Pacific Logo
STL-ORD
1h 30mdirect
Cathay Pacific Logo
ORD-STL
1h 18mdirect
Cathay Pacific
Find Deal
Turkish Airlines Logo
STL-ORD
1h 25mdirect
Turkish Airlines Logo
ORD-STL
1h 24mdirect
Turkish Airlines
Find Deal
Finnair Logo
STL-ORD
1h 23mdirect
Finnair Logo
ORD-STL
1h 28mdirect
Finnair
Find Deal
Royal Jordanian Logo
STL-ORD
1h 19mdirect
Royal Jordanian Logo
ORD-STL
1h 26mdirect
Royal Jordanian
Find Deal
Iberia Logo
STL-ORD
1h 19mdirect
Iberia Logo
ORD-STL
1h 20mdirect
Iberia
Find Deal
ANA Logo
STL-ORD
1h 30mdirect
ANA Logo
ORD-STL
1h 29mdirect
Lufthansa Logo
STL-ORD
1h 32mdirect
Lufthansa Logo
ORD-STL
1h 24mdirect
Lufthansa
Find Deal
British Airways Logo
STL-ORD
1h 19mdirect
British Airways Logo
ORD-STL
1h 26mdirect
British Airways
Find Deal
Gulf Air Logo
STL-ORD
1h 20mdirect
Gulf Air Logo
ORD-STL
1h 18mdirect
Gulf Air
Find Deal
Expert advice

Expert advice for your flight from St. Louis to O'Hare Intl

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are specific to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
American Airlines

Basic Economy includes late boarding and no free checked bags; consider Main Cabin for flexibility.


Main Cabin Extra offers early boarding and complimentary drinks, often worth the upgrade.

Finnair

Finnair offers inflight Wi-Fi on most aircraft, except Embraers and ATRs on shortest routes.


Finnair's Economy Comfort offers more legroom for a small additional charge, enhancing comfort.

Read more about Finnairby Gabriel Leigh
United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


United offers Priority Boarding for Zone 2, useful if worried about overhead bin space.

British Airways

BA's Euro Traveller fares include a cabin bag, unlike many budget carriers.


BA's CityFlyer offers fast travel between London and major European cities.

Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, The Points Guy, and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or out at sea, likely en route to Antarctica or the Arctic.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Useful Info

KAYAK's insights & trends for St. Louis to O'Hare Intl flights

Get data-powered insights and trends into flights from St. Louis to O'Hare Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Chicago O'Hare Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Chicago O'Hare Intl Airport is August, where tickets cost £148 (return) on average. On the other hand, the most expensive months are June and January, where the average cost of round-trip tickets is £222 and £221 respectively.

Can I save money by flying with a stopover from St. Louis to Chicago O'Hare Intl Airport?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of £306, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from St. Louis to Chicago O'Hare Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Chicago O'Hare Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from St. Louis to Chicago O'Hare Intl Airport, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 4 weeks before departure.

Good to know - Cheap tickets from St. Louis to Chicago

Low season

February

High season

May
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly (5% more expensive on average)

When to book flights from St. Louis to O'Hare Intl

Are your dates flexible? Find out the best times to travel from St. Louis to O'Hare Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from St. Louis to O'Hare Intl: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from St. Louis to O'Hare Intl 
valerieFlew with Air CanadaSTL-ORDJan 2025
Usually it is unreliable - always leave lots of time for connection.
Verified travelerFlew with American AirlinesSTL-ORDMay 2024
The flight from STL to Chicago was good

FAQs for booking St. Louis to Chicago flights

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Chicago?

    All the following airlines offer inflight Wi-Fi service on the St. Louis to Chicago flight route: American Airlines, Lufthansa, United Airlines, Delta, Alaska Airlines, and SWISS.

  • Which aircraft models fly most regularly from St. Louis to Chicago?

    The Embraer 175 is the aircraft model that flies most regularly on the St. Louis to Chicago flight route.

  • Which airline alliances offer flights from St. Louis to Chicago?

    oneworld, and Star Alliance are the airline alliances operating flights between St. Louis and Chicago, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from St. Louis to Chicago?

    There are direct flights from St. Louis to Chicago on a daily basis.

  • How does KAYAK find such low prices on flights from St. Louis to Chicago?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Chicago.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Chicago?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from St. Louis is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Chicago?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Chicago with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Chicago?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from St. Louis to Chicago O'Hare Intl Airport

  • Looking for a cheap flight from Chicago to St. Louis? 25% of our users found flights on this route for £157 or less one-way and £697 or less round-trip.

Prefer to fly direct from St. Louis to Chicago?

Find which airlines fly direct from Lambert-St Louis Airport to Chicago O'Hare Intl Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Chicago O'Hare Intl

Monday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Tuesday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Wednesday

ANA, Aer Lingus, Air Canada, +17 more

ANA, Aer Lingus, +18 more

Thursday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Friday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Saturday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Sunday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

See more direct flights

Direct returns

Chicago O'Hare Intl to Lambert-St Louis

Monday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Tuesday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Wednesday

ANA, Aer Lingus, Air Canada, +17 more

ANA, Aer Lingus, +18 more

Thursday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Friday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Saturday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

Sunday

ANA, Aer Lingus, Air Canada, +18 more

ANA, Aer Lingus, +19 more

See more direct flights
See more direct flights

Everything you need to know for your flight from St. Louis to O'Hare Intl

Information on your arrival and departure airports

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