Cheap flights from Chicago to St. Louis
Flights overview
Prices shown are for one adult in Economy class flights from Zürich to New York. This includes the cheapest Business class options where available.
Prices reflect the lowest available in the next three months, though they are subject to change and availability.
Last-minute deals apply to the cheapest weekend trips available in the next seven days, with weekend trips being flights departing between Thursday and Saturday and returning on Sunday or Monday.
Flight duration shown is based on nonstop flights or those with the fewest stops available.
Prices reflect the lowest available in the next three months, though they are subject to change and availability.
Last-minute deals apply to the cheapest weekend trips available in the next seven days, with weekend trips being flights departing between Thursday and Saturday and returning on Sunday or Monday.
Flight duration shown is based on nonstop flights or those with the fewest stops available.
Useful information for finding cheap flights from Chicago to St. Louis and booking your next trip
| Cheapest round-trip flights | $171 | SouthwestNonstop2 hrThu, Apr 9 — Mon, Apr 13 | The cheapest round-trip flight from Chicago to St. Louis is currently $171 | |
|---|---|---|---|---|
| Cheapest one-way flight | $49 | SouthwestNonstop2 hrWed, May 6 | The cheapest one-way flight from Chicago to St. Louis is currently $49 | |
| Cheapest nonstop flights | $171 | SouthwestNonstop2 hrThu, Apr 16 — Mon, Apr 20 | The cheapest nonstop round-trip flight from Chicago to St. Louis is currently $171 | |
| Last-minute weekend getaway | $381 | American1 stop12 hrSat, Mar 14 — Sun, Mar 15 | The cheapest last-minute weekend getaway from Chicago to St. Louis is currently $381 | |
| Cheapest business class flights | $346 | AmericanNonstop2 hrThu, Apr 16 — Mon, Apr 20 | The cheapest business class round-trip flight from Chicago to St. Louis is currently $346 | |
| Fastest flight | 1 hr 10 min | The fastest nonstop flight from Chicago to St. Louis takes 1 hr 10 min | ||
| Nonstop flights | Every day | There are direct flights on this route every day. |
When is the cheapest time to fly?
Typical prices for the least expensive flights for weekend trips from Chicago to St. Louis per month. Insights are based on fares observed in the last 12 months. Current prices may differ.
The cheapest month to fly from Chicago to St. Louis is typically August. The most expensive month to fly is typically July.
January
Prices in January are usually between $170 and $320.
Popular airlines from Chicago to St. Louis
Popularity is based on the number of weekly nonstop and connecting flights the airline operates. Connecting flights do not include interline routes.
Flight suggestions are based on an airline's cheapest round-trip fares from Chicago to St. Louis in the next 3 months. Prices include required taxes + fees for one adult. Optional charges and bag fees may apply.
Typical prices are based on fares observed in the past year for one-week round trips with the same origin, destination, and airline.
- SouthwestNonstopfrom $171Typical price: $150–46031 weekly nonstop flightsMDW - STLEvery day2489 weekly connecting flightsMDW, ORD - STLEvery day
- UnitedNonstopfrom $171Typical price: $170–49061 weekly nonstop flightsORD - STLEvery day229 weekly connecting flightsORD - STLEvery day
- AmericanNonstopfrom $171Typical price: $165–48542 weekly nonstop flightsORD - STLEvery day463 weekly connecting flightsORD - STLEvery day
- Deltafrom $211Typical price: $205–520529 weekly connecting flightsMDW, ORD - STLEvery day
- Frontierfrom $246Typical price: $165–41048 weekly connecting flightsMDW, ORD - STLEvery day
- Alaskafrom $527Typical price: $460–97021 weekly connecting flightsORD - STLEvery day
Popular airports near Chicago
Distance and driving time are relative to the city center. Airports are listed based on distance from Chicago center and popularity with travelers.
- Chicago O'Hare International Airport (ORD)ChicagoUnited States26 min16 mi
- Chicago Midway International Airport (MDW)ChicagoUnited States25 min9 mi
- Milwaukee Mitchell International Airport (MKE)MilwaukeeUnited States1 hr 24 min75 mi
- Indianapolis International Airport (IND)IndianapolisUnited States2 hr 58 min165 mi
Popular airports near St. Louis
Distance and driving time are relative to the city center. Airports are listed based on distance from St. Louis center and popularity with travelers.
- St. Louis Lambert International Airport (STL)St. LouisUnited States21 min12 mi
- General Wayne A. Downing Peoria International Airport (PIA)PeoriaUnited States2 hr 36 min143 mi
- Columbia Regional Airport (COU)ColumbiaUnited States2 hr 7 min109 mi
- MidAmerica St. Louis Airport (BLV)BellevilleUnited States34 min20 mi
Frequently asked questions about flying from Chicago to St. Louis
The cheapest flights from Chicago to St. Louis are usually in August. Typical ticket prices in August range from $95 to $205.
The cheapest round-trip flight from Chicago to St. Louis recently found on Google Flights was with Southwest from $171. The cheapest one-way flight was with Southwest from $49.
Some of the cheapest round-trip deals we found with different airlines:
Some of the cheapest round-trip deals we found with different airlines:
- The cheapest Southwest flight from Chicago to St. Louis is $171, flying from Apr 16 to Apr 20.
- The cheapest United flight from Chicago to St. Louis is $171, flying from Apr 16 to Apr 20.
- The cheapest American flight from Chicago to St. Louis is $171, flying from May 7 to May 11.
- The cheapest Delta flight from Chicago to St. Louis is $211, flying from Apr 16 to Apr 20.
- The cheapest Frontier flight from Chicago to St. Louis is $246, flying from May 28 to Jun 1.
- The cheapest Alaska flight from Chicago to St. Louis is $527, flying from Apr 18 to Apr 20.
The cheapest round-trip flight from Chicago to St. Louis starts at $171 from Thu, Apr 9 to Mon, Apr 13. The cheapest one-way flight starts at $49 and departs on Wed, May 6.
1 hr 10 min is the shortest flight time from Chicago to 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.
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.
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 counts as the best airline for your flights from Chicago to St. Louis 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 Chicago to St. Louis.
In terms of nonstop flights, United is the most popular. United offers 61 nonstop flights and 229 connecting flights per week. United flies from Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL).
In terms of flights, Southwest is the most popular. Southwest offers 31 nonstop flights and 2,489 connecting flights per week. Southwest flies from Chicago Midway International Airport (MDW), Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL).
Other popular airlines flying from Chicago to St. Louis are:
In terms of nonstop flights, United is the most popular. United offers 61 nonstop flights and 229 connecting flights per week. United flies from Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL).
In terms of flights, Southwest is the most popular. Southwest offers 31 nonstop flights and 2,489 connecting flights per week. Southwest flies from Chicago Midway International Airport (MDW), Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL).
Other popular airlines flying from Chicago to St. Louis are:
- American offers 42 nonstop flights and 463 connecting flights per week. American flies from Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL).
- Delta offers 529 connecting flights per week. Delta flies from Chicago Midway International Airport (MDW), Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL).
- Frontier offers 48 connecting flights per week. Frontier flies from Chicago Midway International Airport (MDW), Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL).
- Alaska offers 21 connecting flights per week. Alaska flies from Chicago O'Hare International Airport (ORD) to St. Louis Lambert International Airport (STL).
The cheapest round-trip flight from Chicago to St. Louis recently found on Google Flights was with Southwest from $171. The cheapest one-way flight was with Southwest from $49.
Some of the cheapest round-trip deals we found with different airlines:
Some of the cheapest round-trip deals we found with different airlines:
- The cheapest Southwest flight from Chicago to St. Louis is $171, flying from Apr 16 to Apr 20.
- The cheapest United flight from Chicago to St. Louis is $171, flying from Apr 16 to Apr 20.
- The cheapest American flight from Chicago to St. Louis is $171, flying from May 7 to May 11.
- The cheapest Delta flight from Chicago to St. Louis is $211, flying from Apr 16 to Apr 20.
- The cheapest Frontier flight from Chicago to St. Louis is $246, flying from May 28 to Jun 1.
- The cheapest Alaska flight from Chicago to St. Louis is $527, flying from Apr 18 to Apr 20.
Southwest, United and American fly direct from Chicago to St. Louis.
- There are 31 Southwest direct flights from Chicago to St. Louis per week. Flights are available every day.
- There are 61 United direct flights from Chicago to St. Louis per week. Flights are available every day.
- There are 42 American direct flights from Chicago to St. Louis per week. Flights are available every day.
The cheapest last-minute deal between Chicago and St. Louis at price $381 is offered by American from Sat, Mar 14 to Sun, Mar 15.
Southwest, United and American fly direct from Chicago to St. Louis.
- There are 31 Southwest direct flights from Chicago to St. Louis per week. Flights are available every day.
- There are 61 United direct flights from Chicago to St. Louis per week. Flights are available every day.
- There are 42 American direct flights from Chicago to St. Louis per week. Flights are available every day.
There are direct flights from Chicago to St. Louis on a daily basis.
The cheapest direct (nonstop) round-trip flights between Chicago and St. Louis start at $171 from Thu, Apr 16 to Mon, Apr 20 with Southwest.
It's easy to find nonstop flights with Google Flights! Once you've searched for flights from Chicago to St. Louis, just select the nonstop flights only option in the 'Stops’ filter in the search form and view all available direct flights and their prices.
The cheapest business class round-trip flights between Chicago and St. Louis start at $346 from Thu, Apr 16 to Mon, Apr 20 with American.
The cheapest economy class round-trip flights between Chicago and St. Louis start at $171 from Thu, Apr 9 to Mon, Apr 13.
To book business class trips from Chicago to St. Louis, 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.
You can also adjust the trip type to view one-way fares.
The best last-minute getaway deal for the next weekend between Chicago and St. Louis starts at $381 from Sat, Mar 14 to Sun, Mar 15 with American.
The cheapest last-minute deal between Chicago and St. Louis at price $381 is offered by American from Sat, Mar 14 to Sun, Mar 15.
To find last-minute flight deals from Chicago to St. Louis, 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.
You can check for last-minute flights for the same day or adjust the trip type to see one-way fares.
Search more flights
Popular trips from Chicago
These suggestions are based on the cheapest fares to popular destinations in the next six months.
Prices include required taxes + fees for 1 adult. Optional charges and bag fees may apply.
- Dallas$75May 9 — May 11Nonstop2 hr 35 minSpirit
- Seattle$217Apr 16 — Apr 19Nonstop4 hr 30 minSouthwest
- Reykjavík$453Apr 24 — Apr 26Nonstop6 hr 5 minIcelandair
- Miami$100Apr 18 — Apr 20Nonstop3 hr 9 minSpirit
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