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Flights from Chicago to St Louis, United States
Chicago to St Louis Last modified: Jan 27, 2025 4:35 -05:00
We've scanned 119,262,985 round trip itineraries and found the cheapest flights to St Louis. American & Southern Airways frequently offer the best deals to St Louis flights, or select your preferred carrier below to see the cheapest days to fly.
Where To Buy Cheap Flights from Chicago to St Louis?
The best way to find a great deal on airfare is to search multiple sites. When you run a search on FareCompare, we search multiple sites and fare sources all at once so you don't have to - which is why we think FareCompare is the best place to find cheap tickets. Airlines can adjust prices for tickets from Chicago to St Louis based on the day and time that you decide to book your flight. We have collected data from all airlines, and have found that Tuesdays, Wednesdays, and Saturdays are often the best days to book flights. If you'd like to learn more, read our article about the best time to buy airline tickets.
Compare Flight Prices from Chicago to St Louis by Month
Sorry... we weren't able to find enough data for this market to reliably compare prices over the coming months. Run an airfare search now to update and compare prices. Find Flights
Cheap Last Minute Flights from Chicago to St Louis
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Connecting Flights vs Direct Flights from Chicago to St Louis
Flights between some cities may be significantly cheaper if you choose a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.
The average price for connecting flights from Chicago to St Louis is $206.
The average price for direct flights from Chicago to St Louis is $272.
The chart below shows up to date information regarding non-stop flights from Chicago to St Louis.
| Carrier | Mon | Tue | Wed | Thu | Fri | Sat | Sun | Earliest Flight | Latest Flight |
| American | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 02:20 | 15:05 |
| United | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 01:39 | 16:26 |
One Way Flights vs Round Trip Flights from Chicago to St Louis
We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from Chicago to St Louis. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.
The average price for one way flights from Chicago to St Louis is $87.
The average price for round trip flights from Chicago to St Louis is $204.
Chicago to St Louis Flight Questions
Below are some common questions that asked about this flight route:
Farecompare Research Tools
FareCompare's Flight Schedule Search Tool helps you find information about airline schedule filings, including flight numbers, depart times, and travel distance.
Cheap Domestic Flights from Chicago - CHI Last modified: Jan 27, 2025 4:35 -05:00
Cheap International Flights from Chicago - CHI Last modified: Jan 27, 2025 4:35 -05:00
| Flights | Lowest Price |
| Chicago to Toronto | $249 |
Cheap Domestic Flights to St Louis - STL Last modified: Jan 27, 2025 4:35 -05:00
