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 1/21. 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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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 to St. Louis?
In general, March is the cheapest month to fly from Chicago to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $238. The month of May is another great option to travel to St. Louis, with average flight prices from Chicago averaging around $241.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $245. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $346. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Chicago in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $246 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $291 per ticket.
What is the cheapest Chicago to Lambert-St Louis flight route?
Fly from Chicago O'Hare Intl to Lambert-St Louis for the best Chicago - Lambert-St Louis flight prices
How far in advance should I book a flight to St. Louis?
The best time to book a flight to St. Louis from Chicago is 51 days out, which is when prices tend to be around $276. In the past 72 hours, momondo users found flights from Chicago to St. Louis for as low as $117.
What cabin class options are available on Chicago to Lambert-St Louis flights?
There are 4 cabin classes available to choose from on Chicago to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Chicago to St. Louis flights?
You could potentially save up to 8% on your flight if you consider stops on a Chicago to St. Louis flight.
How have Chicago to St. Louis flight prices changed over time?
As of December 2024, prices for Chicago to St. Louis flights are approximately 25% more expensive when compared to flights at the same time last year.
How many flights depart from Chicago to St. Louis on average per day?
The number of flights available between Chicago and St. Louis is 42 per day as of December 2024. The most frequent departure time is 4:00PM, with 43% of daily flights leaving in the afternoon.
How many flights depart from Chicago to St. Louis on average per week?
As of December 2024, there are 295 flights per week flying from Chicago to St. Louis. The most common day of the week flights depart is Fri, with 20% of flights taking off on this day.
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 40m 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 $97, or consider a bus from Chicago to St. Louis starting at $70. 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 December 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 12.76% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 10.14%, Canadair (Bombardier) Regional Jet CRJ-550 at 8.09%, and Embraer 175 at 7.89%.
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 44% of the total bookings. Other popular airlines include United Airlines with 31%, Southwest with 15%, and Southern / Mokulele with 10%.
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 $115 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $126 | Free Cancellation | Rating 7.4 9,035 reviews | |||
| PriceFrom $143 | Free Cancellation | Rating 6.7 29 reviews | |||
| PriceFrom $181 | Free Cancellation | Rating 8.1 4,814 reviews |
Southwest Flights From Chicago to St. Louis
Southwest operates around 25 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 4,814 reviews.
United Airlines Flights From Chicago to St. Louis
Across 9,035 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 $126 to $307. 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.