Flying from Chicago to St Louis can be expensive. Our search helps you compare cheap flights, airfare deals, and flight tickets across airlines and agencies so you can book at the best price.
We scan trusted travel agencies and airline booking systems for the route Chicago - St Louis (CHI - STL). We do not sell tickets or add fees - you choose where to buy.
Airfares vary by date, time, and airport. Use filters to find the best option by departure/arrival time, number of stops, airline or alliance, and booking channel.
If your dates are flexible, check the low-fare calendar to find the cheapest days. Booking round-trip in one order often reduces fees, and prices usually rise as departure approaches.
We also recommend you to look through the prices for return tickets from St Louis to Chicago.
Airlines are flying from Chicago to St Louis
| Southwest Airlines |
Popular flights from Chicago
- to Miamifrom $21
- to Orlando Executivefrom $33
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- to Los Angeles, Cafrom $41
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- to Phoenixfrom $55
- to Tampafrom $103
- to Moscowfrom $342
- to San Juanfrom $50
- to Philadelphiafrom $344
- to Guadalajarafrom $74
- to Dallas, TXfrom $54
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- to Atlanta, GAfrom $60
- to Fort Lauderdalefrom $30
- to Washingtonfrom $52
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- to Manilafrom $325
- to Fort Myersfrom $56
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- to Londonfrom $144
- to Honolulufrom $140
- to Houston, TXfrom $37
- to Tokyofrom $319
- to Seattle, WAfrom $78
- to Cairofrom $332
Frequently asked questions about flights from Chicago to St Louis
How long does the flight from Chicago to St Louis take?
Flight duration from Chicago to St Louis varies by route, airline, and number of stops. Direct flights are faster; connecting flights may take longer. Use our search to compare options and see exact durations for your dates.
Are there direct flights from Chicago to St Louis?
Availability of direct flights from Chicago to St Louis depends on the route and season. Use our search and filter by "Direct" or "Non-stop" to see only direct options. We compare offers from many airlines and agencies.
Which airlines fly from Chicago to St Louis?
Several airlines may operate flights from Chicago to St Louis. On this page you can see airlines that serve this route. Our search compares prices across airlines and agencies so you can choose the best offer. We do not sell tickets; you book directly with the airline or agency.
What is the cheapest month to fly from Chicago to St Louis?
Prices from Chicago to St Louis vary by month and demand. On this page you can see average round-trip prices by month. Use the low-fare calendar and monthly table to find the cheapest dates. Booking in advance and avoiding peak seasons often helps get the best price.