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Uncover the best deals on Chicago to St Louis flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest ORD - STL Flights
Useful information for finding best airline tickets from Chicago O'Hare International to Lambert St Louis International on your next trip.
Cheapest Round Trip Flight
$198
Frontier Airlines
• 1 stop
• 16h 57m
Aug 28 – Aug 30
The cheapest round trip flight from Chicago to St Louis (ORD-STL-ORD) is currently $198
Cheapest Direct Flight
$274
American Airlines
• nonstop
• 1h 54m
Aug 28
The cheapest nonstop flight from Chicago to St Louis (ORD-STL) is currently $274
Fastest Flight
1h 54m
The fastest nonstop flight from Chicago to St Louis (ORD-STL) takes 1h 54m
Latest Flight Deals from Chicago (ORD) to St Louis (STL)
Compare and book low fare round-trip air tickets from Chicago to St Louis. Ideal for travelers with confirmed return itineraries.
Aug 28 - Aug 30, Economy
Chicago → St Louis
16h 57m
7:05 AM - 5:22 PM • 1 stop
Chicago → St Louis
28h 58m
7:58 PM - 1:36 PM • 1 stop
Frontier Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
1h 54m
11:00 PM - 12:14 AM • nonstop
Chicago → St Louis
2h 8m
9:32 AM - 11:00 AM • nonstop
American Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 11m
3:35 PM - 5:06 PM • nonstop
Chicago → St Louis
2h 14m
8:00 AM - 9:34 AM • nonstop
United Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 14m
7:05 AM - 8:39 AM • nonstop
Chicago → St Louis
2h 10m
9:30 AM - 11:00 AM • nonstop
United Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 11m
8:30 PM - 10:01 PM • nonstop
Chicago → St Louis
2h 11m
5:30 PM - 7:01 PM • nonstop
United Airlines
Flying to St Louis soon? We've surfaced some of the most affordable last-minute flights from Chicago to St Louis, ideal for urgent plans or spontaneous trips.
Aug 28 - Aug 30, Economy
Chicago → St Louis
16h 57m
7:05 AM - 5:22 PM • 1 stop
Chicago → St Louis
28h 58m
7:58 PM - 1:36 PM • 1 stop
Frontier Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
1h 54m
11:00 PM - 12:14 AM • nonstop
Chicago → St Louis
2h 8m
9:32 AM - 11:00 AM • nonstop
American Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 11m
3:35 PM - 5:06 PM • nonstop
Chicago → St Louis
2h 14m
8:00 AM - 9:34 AM • nonstop
United Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 14m
7:05 AM - 8:39 AM • nonstop
Chicago → St Louis
2h 10m
9:30 AM - 11:00 AM • nonstop
United Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 11m
8:30 PM - 10:01 PM • nonstop
Chicago → St Louis
2h 11m
5:30 PM - 7:01 PM • nonstop
United Airlines
Looking for the fastest way to St Louis? These direct flight options from ORD to STL offer both convenience and value—no layovers, just straight to your destination.
Aug 28 - Aug 30, Economy
Chicago → St Louis
1h 54m
11:00 PM - 12:14 AM • nonstop
Chicago → St Louis
2h 8m
9:32 AM - 11:00 AM • nonstop
American Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 11m
3:35 PM - 5:06 PM • nonstop
Chicago → St Louis
2h 14m
8:00 AM - 9:34 AM • nonstop
United Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 14m
7:05 AM - 8:39 AM • nonstop
Chicago → St Louis
2h 10m
9:30 AM - 11:00 AM • nonstop
United Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 11m
8:30 PM - 10:01 PM • nonstop
Chicago → St Louis
2h 11m
5:30 PM - 7:01 PM • nonstop
United Airlines
Aug 28 - Aug 30, Economy
Chicago → St Louis
2h 7m
1:30 PM - 2:57 PM • nonstop
Chicago → St Louis
2h 14m
8:00 AM - 9:34 AM • nonstop
United Airlines
FAQs on Chicago to St Louis Flights
What are the airports in Chicago?
MDW,ORD
What’s the most popular airline flying from ORD to STL?
The most popular airline flying from Chicago to St Louis are
Can I fly from ORD to STL non-stop?
Yes, you can fly ORD to STL non-stop on
Which airlines fly nonstop between Chicago and St Louis?
The non-stop flights between Chicago and St Louis are .
What’s the earliest departure time from ORD to STL Airport?
The earliest flight leaves ORD at 7:05 am and lands in STL - Lambert St Louis International
What are the airports in St Louis?
STL
Can I make changes to my Chicago to St Louis flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from ORD to STL?
Read the fare rules of the Chicago to St Louis air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Chicago and St Louis?
operate flights between Chicago and St Louis
How long does a flight from Chicago to St Louis take?
It takes approximately 1 hour to fly non-stop from ORD to STL, which is 258.03 miles by air.
Which airlines provide the cheapest flights from Chicago (ORD) to St Louis (STL) ?
In the past couple of days, the cheapest tickets to STL from ORD were found on AA : USD 274
Do I need a passport to fly between ORD and STL?
No
What’s the latest departure time from ORD to STL ?
The last flight leaves ORD at 11:00 pm
Chicago (ORD) to St Louis (STL): Airport Information
| Origin Airport | Chicago O'Hare International , Chicago, US |
| Destination Airport | Lambert St Louis International , St Louis, US |
| Distance | 258 miles |
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