May is by far the best month, wherein you can get cheapest flights for Chicago to St Louis. Meanwhile, June is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.
May- During this month the footfall is less so, the flight is gradually inexpensive.
May - is the cheapest month to book round trip flights.
Cheapest Fare- Currently, this is the fare price based on the current demand.
Disclaimer - All the above-mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.
ORD
08:15
Chicago
Chicago O Hare International Airport
Thu , 03 Jul 2025
STL
12:10
St Louis
St Louis Lambert International Airport
Thu, 03 Jul 2025
ORD
13:10
Chicago
Chicago O Hare International Airport
Thu , 03 Jul 2025
STL
16:45
St Louis
St Louis Lambert International Airport
Thu, 03 Jul 2025
ORD
19:03
Chicago
Chicago O Hare International Airport
Thu , 03 Jul 2025
STL
20:30
St Louis
St Louis Lambert International Airport
Thu, 03 Jul 2025
ORD
21:20
Chicago
Chicago O Hare International Airport
Thu , 03 Jul 2025
STL
22:45
St Louis
St Louis Lambert International Airport
Thu, 03 Jul 2025
ORD
14:00
Chicago
Chicago O Hare International Airport
Thu , 03 Jul 2025
STL
20:30
St Louis
St Louis Lambert International Airport
Thu, 03 Jul 2025
ORD
16:47
Chicago
Chicago O Hare International Airport
Thu , 03 Jul 2025
STL
18:07
St Louis
St Louis Lambert International Airport
Thu, 03 Jul 2025
ORD
13:10
Chicago
Chicago O Hare International Airport
Wed , 09 Jul 2025
STL
16:45
St Louis
St Louis Lambert International Airport
Wed, 09 Jul 2025
ORD
11:20
Chicago
Chicago O Hare International Airport
Wed , 09 Jul 2025
STL
16:18
St Louis
St Louis Lambert International Airport
Wed, 09 Jul 2025
ORD
22:36
Chicago
Chicago O Hare International Airport
Wed , 09 Jul 2025
STL
23:51
St Louis
St Louis Lambert International Airport
Wed, 09 Jul 2025
ORD
14:23
Chicago
Chicago O Hare International Airport
Wed , 09 Jul 2025
STL
15:47
St Louis
St Louis Lambert International Airport
Wed, 09 Jul 2025
ORD
16:47
Chicago
Chicago O Hare International Airport
Wed , 09 Jul 2025
STL
18:07
St Louis
St Louis Lambert International Airport
Wed, 09 Jul 2025
Flying from Chicago to St Louis has never been easier. Whether you’re planning a short business trip, a weekend getaway, or reconnecting with family and friends, Easemytrip brings you the best deals, seamless booking, and flexible options for this popular flight route. Our platform is built to help travellers like you compare flight prices, explore direct and connecting options, and find the perfect departure time — all within a few clicks.
The air route between Chicago to St Louis is one of the most frequently travelled, offering reliable services from top airlines and excellent connectivity between Chicago O Hare International Airport (ORD) and St Louis Lambert International Airport (STL). You can expect a flight distance of approximately 415 km, and most direct services cover it in around 02:45.
Let’s take a closer look at everything you need to know before booking your flight from Chicago to St Louis.
Flight Details | Information |
---|---|
Route Distance | 415 km |
Average Flight Time | 02:45 hrs |
Departure Airport | Chicago O Hare International Airport (ORD) |
Arrival Airport | St Louis Lambert International Airport (STL) |
Cabin Classes Available | Economy Class, Premium Economy, Business Class, First Class |
Direct Flights | YES |
Common Airlines | Southern Airways Express, American Airlines, United Airlines, Delta Airlines |
The route is serviced regularly by both full-service and budget airlines, catering to all types of travellers — from those looking for no-frills budget options to those preferring business and first-class comfort. If you're flying for business, early morning weekday flights are a great choice, while leisure travellers often opt for weekend and evening departures.