Cheap flights from Chicago to St. Louis from $49
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago to St. Louis departing on 11/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Below you can see the best fares for your round-trip flight route over the next six months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Chicago to St. Louis by changing tabs
Find the cheapest one-way flights from Chicago to St. Louis
If you're looking for one-way flights from Chicago to St. Louis, view some of our deals below provided by Frontier, Southwest and United Airlines
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Southwest flights from Chicago to St. Louis
Our best Southwest deals on Chicago to St. Louis flight tickets
Frontier flights from Chicago to St. Louis
Our best Frontier deals on Chicago to St. Louis flight tickets
How to get the cheapest flight ticket from Chicago to St. Louis
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 typical price of a round-trip flight between Chicago and St. Louis?
What is the cheapest month to fly from Chicago to St. Louis?
May. The cheapest time of year to fly to St. Louis from Chicago is May. Most expensive is January
What is the cheapest day to depart Chicago for St. Louis?
Saturday. The cheapest day of the week is typically Saturday. The most expensive is typically Tuesday
When is the cheapest time to fly from Chicago to St. Louis?
In the afternoon. Chicago to St. Louis flights are approximately 17% more expensive in the morning than in the afternoon
What is the cheapest airline that flies to St. Louis from Chicago?
Southern / Mokulele. Southern / Mokulele, American Airlines, and United Airlines are the most popular carriers operating from Chicago to St. Louis
What is the cheapest Chicago to St. Louis flight route?
Chicago O'Hare Intl - Lambert-St Louis. Fly from Chicago O'Hare Intl to Lambert-St Louis for the best Chicago - St. Louis flight prices
How far in advance should you book Chicago to St. Louis flights?
50 days before. The cheapest time to buy a flight from Chicago to St. Louis is approximately 50 days to departure
How many flights depart from Chicago to St. Louis on average per day?
The number of flights available between Chicago and St. Louis is 50 per day as of October 2024. The most frequent departure time is 2:00PM, with 42% of daily flights leaving in the afternoon.
How many flights depart from Chicago to St. Louis on average per week?
As of October 2024, there are 351 flights per week flying from Chicago to St. Louis. The most common day of the week flights depart is Wednesday, with 16% of flights taking off on this day.
Can stopping save me money on Chicago to St. Louis flights?
No. A direct flight is the cheapest option for a flight between Chicago to St. Louis.
How have Chicago to St. Louis flight prices changed over time?
As of October 2024, prices for Chicago to St. Louis flights are approximately 17% cheaper when compared to flights at the same time last year.
When to book flights from Chicago to St. Louis
Cheap Chicago to St. Louis (CHI to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Chicago to St. Louis
Is flying the fastest way to get from Chicago to St. Louis?
The quickest way to travel this route is to take a flight from Chicago to St. Louis, doing so can potentially save up to 7h 50m of travel time. While these options may take longer, booking a train from Chicago to St. Louis or a bus from Chicago to St. Louis may suit your needs if travel time is less of a factor in your decision making.
Is flying the cheapest way to get from Chicago to St. Louis?
A train from Chicago to St. Louis is currently going to be the least expensive option currently available. You can also find deals for a flight from Chicago to St. Louis starting at $98, or consider a bus from Chicago to St. Louis starting at $72. Both of these alternative options are worth considering when looking to reach your destination.
How far is Chicago to Lambert-St Louis by plane?
There are 262.0 mi between Chicago and Lambert-St Louis. Typically, this will take 1h 10m by plane in normal conditions.
What is the carbon footprint of flying from Chicago to Lambert-St Louis?
The carbon footprint of a Chicago to Lambert-St Louis flight is around 181lb, which may vary slightly based on airline and stops. There is a CO2 sorter on our flight search results to help you select the lowest possible footprint. The carbon footprint of a train for this route is 68% less. If you can take the time, the carbon footprint of a bus for this journey would be 37lb, some 80% less than flying.
When did momondo last update prices for flights from Chicago to Lambert-St Louis Airport?
Prices for flights from Chicago to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from Chicago to Lambert-St Louis Airport?
As of October 2024, there are 4 operators available to choose from for flights from Chicago to Lambert-St Louis Airport.
How old do you have to be to fly from Chicago to Lambert-St Louis Airport?
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 Chicago to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Chicago to St. Louis?
momondo data reveals that the most frequently booked plane model on the route from Chicago to St. Louis is Boeing 737-800, representing 16.87% of all bookings. The subsequent popular models are Airbus A319 at 14.38%, Embraer 175 at 11.99%, and Canadair (Bombardier) Regional Jet CRJ-550 at 10.55%.
What is the most popular airline from Chicago to St. Louis?
Based on momondo bookings for flights between Chicago and St. Louis, the leading airline is American Airlines, making up 42.50% of the total bookings. Other popular airlines include United Airlines with 38.55%, Southern / Mokulele with 11.70%, and Southwest with 7.25%.
Best airlines flying from Chicago to St. Louis
Compare and see reviews for airlines that fly from Chicago to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $102 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $137 | Free Cancellation | Rating 7.4 9,390 reviews | |||
| PriceFrom $143 | Free Cancellation | Rating 6.8 29 reviews | |||
| PriceFrom $181 | Free Cancellation | Rating 8.1 5,249 reviews |
Southwest Flights From Chicago to St. Louis
Southwest operates around 11 flights from Chicago to St. Louis every week. The average price of these flights found in the last 72 hours has been $328, but momondo users have found Southwest deals from Chicago to St. Louis from as low as $181 round-trip. Southwest has been scored 8.1/10 in 5,249 reviews.
United Airlines Flights From Chicago to St. Louis
Across 9,390 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Chicago to St. Louis about 39 times each week, with ticket deals ranging from $137 to $306. Price data is based on momondo searches in the last 72 hours.
Why use momondo?
Why should I use momondo to find a flight deal from Chicago to St. Louis?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Chicago.
Can I find flights from Chicago to St. Louis with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Chicago to St. Louis flights to just show those with flexible booking policies.
How can momondo help me find flights from Chicago to St. Louis?
Once you have performed a search for Chicago to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Chicago to St. Louis right now. Can momondo alert me if prices change?
Price alerts on flights to St. Louis from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.