Cheap flights from Chicago to St. Louis

Good to know

Flight information for Chicago to St. Louis to help you plan your next trip.
Cheapest round-trip flight
$117
American Nonstop 2 hr Jul 4 — Jul 7
The cheapest round-trip flight from Chicago to St. Louis is currently $117
Cheapest one-way flight
$59
American Nonstop 2 hr Sep 4
The cheapest one-way flight from Chicago to St. Louis is currently $59
Fastest flight
1 hr 5 min
The fastest nonstop flight from Chicago to St. Louis takes 1 hr 5 min
Nonstop flights
Every day
There are direct flights on this route every day.

Popular airports near Chicago

  • Chicago O'Hare International Airport (ORD)
    Chicago 26 min 16 mi
  • Chicago Midway International Airport (MDW)
    Chicago 22 min 9 mi
  • Milwaukee Mitchell International Airport (MKE)
    Milwaukee 1 hr 23 min 75 mi
  • Indianapolis International Airport (IND)
    Indianapolis 2 hr 56 min 165 mi

Popular airports near St. Louis

  • St. Louis Lambert International Airport (STL)
    St. Louis 22 min 12 mi
  • General Wayne A. Downing Peoria International Airport (PIA)
    Peoria 2 hr 34 min 143 mi
  • Indianapolis International Airport (IND)
    Indianapolis 3 hr 29 min 222 mi
  • Evansville Regional Airport (EVV)
    Evansville 2 hr 30 min 150 mi

Frequently asked questions about flying from Chicago to St. Louis

How long does it take to fly from Chicago to St. Louis?
1 hr 5 min is the shortest flight time from Chicago to St. Louis.
Which airlines provide the cheapest flights from Chicago to St. Louis?
The best round-trip deal recently found on Google Flights from Chicago to St. Louis was with American from $117. The best one-way deal was with American from $59.
When are direct flights from Chicago to St. Louis available?
There are direct flights from Chicago to St. Louis on a daily basis.
Which airlines have direct flights from Chicago to St. Louis?
Southwest, United and American fly direct from Chicago to St. Louis.
What are the cheapest flights from Chicago to St. Louis?
The cheapest round-trip flight from Chicago to St. Louis starts at $117 from Thu, Jul 4 to Sun, Jul 7. The cheapest one-way flight starts at $59 and departs on Wed, Sep 4.
When should you visit St. Louis?
Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.
How do I find cheap dates to fly from Chicago to St. Louis
It's easy to use Google Flights to find the cheapest days to fly from Chicago to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

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Popular trips from Chicago

  1. New York
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    Aug 15 — Aug 18
    Nonstop 2 hr 18 min Spirit
  2. Paris
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  3. Denver
    $53
    Aug 24 — Aug 26
    Nonstop 2 hr 39 min Frontier
  4. Seattle
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