Cheap flights from St. Louis to Chicago

Flights overview

Useful information for finding cheap flights from St. Louis to Chicago and booking your next trip
Cheapest round-trip flights $108
Frontier 1 stop 11 hr Thu, Nov 13 — Mon, Nov 17
The cheapest round-trip flight from St. Louis to Chicago is currently $108
Cheapest one-way flight $46
United Nonstop 2 hr Fri, Oct 31
The cheapest one-way flight from St. Louis to Chicago is currently $46
Cheapest nonstop flights $171
Southwest Nonstop 2 hr Thu, Jan 8 — Mon, Jan 12
The cheapest nonstop round-trip flight from St. Louis to Chicago is currently $171
Last-minute weekend getaway $231
Frontier 1 stop 17 hr Sat, Oct 18 — Mon, Oct 20
The cheapest last-minute weekend getaway from St. Louis to Chicago is currently $231
Cheapest business class flights $346
American Nonstop 2 hr Thu, Jan 8 — Mon, Jan 12
The cheapest business class round-trip flight from St. Louis to Chicago is currently $346
Fastest flight 1 hr 5 min The fastest nonstop flight from St. Louis to Chicago takes 1 hr 5 min
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from St. Louis to Chicago is typically August. The most expensive month to fly is typically July.
August
Cheapest
Typical prices: $105–210
July
Most expensive
Typical prices: $180–230

Popular airlines from St. Louis to Chicago

  • Southwest
    Nonstop
    from $141
    Typical price: $145–460
    29 weekly nonstop flights
    STL - MDW Every day
    2360 weekly connecting flights
    STL - MDW, ORD Every day
  • United
    Nonstop
    from $171
    Typical price: $160–485
    52 weekly nonstop flights
    STL - ORD Every day
    233 weekly connecting flights
    STL - ORD Every day
  • American
    Nonstop
    from $171
    Typical price: $150–470
    42 weekly nonstop flights
    STL - ORD Every day
    479 weekly connecting flights
    STL - ORD Every day
  • Delta
    from $191
    Typical price: $210–495
    521 weekly connecting flights
    STL - MDW, ORD Every day
  • Frontier
    from $108
    Typical price: $155–385
    33 weekly connecting flights
    STL - MDW, ORD Every day
  • Alaska
    from $402
    Typical price: $485–1,050
    21 weekly connecting flights
    STL - ORD Every day

Popular airports near St. Louis

  • St. Louis Lambert International Airport (STL)
    St. Louis United States 22 min 12 mi
  • General Wayne A. Downing Peoria International Airport (PIA)
    Peoria United States 2 hr 35 min 143 mi
  • Indianapolis International Airport (IND)
    Indianapolis United States 3 hr 28 min 222 mi
  • Columbia Regional Airport (COU)
    Columbia United States 2 hr 3 min 109 mi

Popular airports near Chicago

  • Chicago O'Hare International Airport (ORD)
    Chicago United States 39 min 16 mi
  • Chicago Midway International Airport (MDW)
    Chicago United States 25 min 9 mi
  • Indianapolis International Airport (IND)
    Indianapolis United States 2 hr 57 min 165 mi
  • Milwaukee Mitchell International Airport (MKE)
    Milwaukee United States 1 hr 37 min 75 mi

Frequently asked questions about flying from St. Louis to Chicago

When are the cheapest days to fly from St. Louis to Chicago?
The cheapest flights from St. Louis to Chicago are usually in August. Typical ticket prices in August range from $105 to $210.
Which airlines provide the cheapest flights from St. Louis to Chicago?
The cheapest round-trip flight from St. Louis to Chicago recently found on Google Flights was with Frontier from $108. The cheapest one-way flight was with United from $46.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from St. Louis to Chicago is $141, flying from Nov 20 to Nov 24.
  • The cheapest United flight from St. Louis to Chicago is $171, flying from Dec 13 to Dec 15.
  • The cheapest American flight from St. Louis to Chicago is $171, flying from Dec 4 to Dec 8.
  • The cheapest Delta flight from St. Louis to Chicago is $191, flying from Nov 13 to Nov 17.
  • The cheapest Frontier flight from St. Louis to Chicago is $108, flying from Nov 13 to Nov 17.
  • The cheapest Alaska flight from St. Louis to Chicago is $402, flying from Nov 15 to Nov 17.
What are the cheapest flights from St. Louis to Chicago?
The cheapest round-trip flight from St. Louis to Chicago starts at $108 from Thu, Nov 13 to Mon, Nov 17. The cheapest one-way flight starts at $46 and departs on Fri, Oct 31.
How long does it take to fly from St. Louis to Chicago?
1 hr 5 min is the shortest flight time from St. Louis to Chicago.
When should you fly to Chicago, United States?
Chicago's peak season is Jun–Aug. Popular events throughout year include St. Patrick's Day, when the river is tinted green (Mar 17); the Pride Parade (Jun); the Taste of Chicago culinary festival (Jul) and the Jazz Festival (Sep). During the holiday season (Nov–Dec), the Magnificent Mile Lights Festival and Christkindlmarket, a German Christmas market in Daley Plaza, draw crowds to the city.
How do I find cheap dates to fly from St. Louis to Chicago?
It's easy to use Google Flights to find the cheapest days to fly from St. Louis to Chicago.
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.
What is the best airline to fly from St. Louis to Chicago?
What counts as the best airline for your flights from St. Louis to Chicago really depends on your individual needs. You may have a favorite carrier or a loyalty program you like, but price, convenience, and airports served also come into play. Flexibility and booking terms – Can you change flights if you want to stay longer or get a refund if you have to postpone your trip? – are also factors that help determine which airline is best to fly from St. Louis to Chicago.

In terms of nonstop flights, United is the most popular. United offers 52 nonstop flights and 233 connecting flights per week. United flies from St. Louis Lambert International Airport (STL) to Chicago O'Hare International Airport (ORD) .

In terms of flights, Southwest is the most popular. Southwest offers 29 nonstop flights and 2,360 connecting flights per week. Southwest flies from St. Louis Lambert International Airport (STL) to Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) .

Other popular airlines flying from St. Louis to Chicago are:
  • American offers 42 nonstop flights and 479 connecting flights per week. American flies from St. Louis Lambert International Airport (STL) to Chicago O'Hare International Airport (ORD) .
  • Delta offers 521 connecting flights per week. Delta flies from St. Louis Lambert International Airport (STL) to Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) .
  • Frontier offers 33 connecting flights per week. Frontier flies from St. Louis Lambert International Airport (STL) to Chicago Midway International Airport (MDW) , Chicago O'Hare International Airport (ORD) .
  • Alaska offers 21 connecting flights per week. Alaska flies from St. Louis Lambert International Airport (STL) to Chicago O'Hare International Airport (ORD) .
The number of connecting flights refers to distinct flights with at least one stop between St. Louis and Chicago.
Which airlines provide the cheapest flights from St. Louis to Chicago?
The cheapest round-trip flight from St. Louis to Chicago recently found on Google Flights was with Frontier from $108. The cheapest one-way flight was with United from $46.

Some of the cheapest round-trip deals we found with different airlines:
  • The cheapest Southwest flight from St. Louis to Chicago is $141, flying from Nov 20 to Nov 24.
  • The cheapest United flight from St. Louis to Chicago is $171, flying from Dec 13 to Dec 15.
  • The cheapest American flight from St. Louis to Chicago is $171, flying from Dec 4 to Dec 8.
  • The cheapest Delta flight from St. Louis to Chicago is $191, flying from Nov 13 to Nov 17.
  • The cheapest Frontier flight from St. Louis to Chicago is $108, flying from Nov 13 to Nov 17.
  • The cheapest Alaska flight from St. Louis to Chicago is $402, flying from Nov 15 to Nov 17.
Which airlines have direct flights from St. Louis to Chicago?
Southwest, United and American fly direct from St. Louis to Chicago.
  • There are 29 Southwest direct flights from St. Louis to Chicago per week. Flights are available every day.
  • There are 52 United direct flights from St. Louis to Chicago per week. Flights are available every day.
  • There are 42 American direct flights from St. Louis to Chicago per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
Which airline provides the cheapest last-minute getaway flight from St. Louis to Chicago?
The cheapest last-minute deal between St. Louis and Chicago at price $231 is offered by Frontier from Sat, Oct 18 to Mon, Oct 20.
Which airlines have direct flights from St. Louis to Chicago?
Southwest, United and American fly direct from St. Louis to Chicago.
  • There are 29 Southwest direct flights from St. Louis to Chicago per week. Flights are available every day.
  • There are 52 United direct flights from St. Louis to Chicago per week. Flights are available every day.
  • There are 42 American direct flights from St. Louis to Chicago per week. Flights are available every day.
Use the Stops filter while searching for flights, to see only nonstop options in your results.
When are direct flights from St. Louis to Chicago available?
There are direct flights from St. Louis to Chicago on a daily basis.
What are the cheapest direct flights from St. Louis to Chicago?
The cheapest direct (nonstop) round-trip flights between St. Louis and Chicago start at $171 from Thu, Jan 8 to Mon, Jan 12 with Southwest.
How can I find nonstop flights from St. Louis to Chicago?
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from St. Louis to Chicago, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
What are the cheapest business class flights from St. Louis to Chicago?
The cheapest business class round-trip flights between St. Louis and Chicago start at $346 from Thu, Jan 8 to Mon, Jan 12 with American.
What are the cheapest economy class flights from St. Louis to Chicago?
The cheapest economy class round-trip flights between St. Louis and Chicago start at $108 from Thu, Nov 13 to Mon, Nov 17.
How can I book business class trips from St. Louis to Chicago?
To book business class trips from St. Louis to Chicago, look for the default Economy selection at the top, and change it to your desired cabin class such as Premium Economy, Business Class, or First Class. You can then select your departure and arrival dates, consider available options, and book your business travel.

You can also adjust the trip type to view one-way fares.
Are there any last-minute deals from St. Louis to Chicago next weekend?
The best last-minute getaway deal for the next weekend between St. Louis and Chicago starts at $231 from Sat, Oct 18 to Mon, Oct 20 with Frontier.
Which airline provides the cheapest last-minute getaway flight from St. Louis to Chicago?
The cheapest last-minute deal between St. Louis and Chicago at price $231 is offered by Frontier from Sat, Oct 18 to Mon, Oct 20.
How can I find last-minute flight deals from St. Louis to Chicago?
To find last-minute flight deals from St. Louis to Chicago, start by entering the city names, select the desired departure and return dates, and hit the Search button to view flight options.

You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.

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