
Popular airlines from Chicago to St. Louis, MO (STL-Lambert-St. Louis Intl.)
- Delta
Delta
- Southwest Airlines
Southwest Airlines
- American Airlines
American Airlines
- United
United
- Frontier Airlines
Frontier Airlines
- Alaska Airlines
Alaska Airlines
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Cheap Flights from Chicago (CHI) to St. Louis (STL)
Prices were available within the past 7 days and start at ₹8,573 for one-way flights and ₹17,909 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Chicago (CHI) to St. Louis (STL)
August is typically the cheapest month to fly
Alternative airports near St. Louis
Prices were available within the past 7 days. Prices and availability are subject to change.
Frequently asked questions
Travel information
Origin airport | Midway Intl. |
|---|---|
Destination airport | Lambert-St. Louis Intl. |
Return price | ₹17,909 |
Distance | 402 km |
Book with confidence
Illinois to St. Louis Flights
Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Illinois to St. Louis will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring St. Louis.
Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we ’ll pair you up with CHI to STL flights that won’t make your bank account wince. Ready to temporarily leave behind Illinois for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to STL with hotels and car rentals to score even bigger savings.
All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.
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