Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from St. Louis to Chicago from R6 464

1 adult
0 bags

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from St. Louis to Chicago

Cheap return flights

Multiple Airlines Logo
STL-CHI
672 kmmulti-stop
Multiple Airlines Logo
CHI-STL
672 kmmulti-stop
Multiple Airlines
Find Deal

See travel insights to Chicago from

How to get the cheapest flight ticket from St. Louis to Chicago

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Chicago?

The month of August is, on average, the cheapest month to fly to Chicago from St. Louis, with most prices found around R3 117. If you are unable to visit Chicago during the month of August, then departing from St. Louis during the month September is also very affordable. Most momondo users find prices during this month for around R3 417.

What is the cheapest day to depart on your flight to Chicago?

On average, the least expensive day to fly to Chicago from St. Louis is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as R24 931. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Chicago on Sunday is R31 822.

What is the cheapest time of day to depart on your flight to Chicago?

Our data shows that the cheapest St. Louis to Chicago flights are usually those with departure times in the afternoon. Our users have found flights to Chicago in the afternoon for as low as R22 989. Try not to purchase tickets in the morning because they tend to be around R27 687. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Lambert-St Louis to Chicago flight route?

Fly from Lambert-St Louis to Chicago Midway for the best Lambert-St Louis - Chicago flight prices

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around R4 716 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from St. Louis for as low as R3 487 on momondo.

What cabin class options are available on Lambert-St Louis to Chicago flights?

There are 1 cabin classes available to choose from on Lambert-St Louis to Chicago flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have St. Louis to Chicago flight prices changed over time?

As of July 2025, prices for St. Louis to Chicago flights are approximately 40% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Chicago

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Chicago according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap St. Louis to Chicago (STL to CHI) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Chicago

Direct flights

None
There are no direct flights from St. Louis to Chicago. There are no popular flight routes from St. Louis to Chicago.

  • How far is Lambert-St Louis to Chicago by plane?

    There are 421,6 km between Lambert-St Louis and Chicago.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Chicago?

    Prices for flights from Lambert-St Louis Airport to Chicago are updated daily.

  • How old do you have to be to fly from Lambert-St Louis Airport to Chicago?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from St. Louis to Chicago?


Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Hammond

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Chicago?

It is quick and easy to find St. Louis to Chicago flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Chicago that suits you.

Can I find flights from St. Louis to Chicago with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Chicago flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Chicago?

momondo provides multiple filters to help you find the best flight to Chicago from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Chicago right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


An easier way to manage your Chicago trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 8/7
Tue 15/7

Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 25.6 km from Chicago