Cheap flights from Chicago (CHI) to St. Louis (STL) from $45
This is the cheapest one-way flight price, found on 9/27. Prices may vary by date and flight preferences.
The best prices from Chicago to Lambert-St Louis are usually found in January or February, booked 60 days in advance, depart on a Saturday or Wednesday and return on a Saturday
How to find the cheapest flight from Chicago (CHI) to St. Louis (STL)
All the information you need to plan the best CHI to STL flight in 2023: compare Chicago to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.
Popular in | June |
|---|---|
Cheapest in | January |
Round-trip from | $299 |
One-way from | $72 |
CHI - STL Price | $299 - $474 |
|---|---|
STL Temperature | 32 - 80.6 °F |
STL Rainfall | 2.2 - 4.7 inches |
What is the cheapest day to fly round-trip from Chicago to St. Louis?
Users have found that leaving on a Friday can be a cost-effective option. It’s possible to save up to 69% on your flight compared to booking on days when demand is much higher.
How far in advance should I book a flight from Chicago to St. Louis?
To save on the cost of your flight from Chicago to St. Louis, book at least 61 days before your planned departure. Booking around this time can save you about 48% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $315 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $394.
What is the cheapest month to fly from Chicago to St. Louis?
January is one of the best times of the year to fly to St. Louis from Chicago. Prices for January average $283 per person but you can even find prices for as low as $165. The most expensive prices can be found in the month of June. Opting for a January flight can save you 31% on your journey compared to booking in June
When is the cheapest time to fly from Chicago to St. Louis (CHI - STL)?
Unlike in the evening, when flights are generally more expensive, you can save up to 49% on flights from Chicago to St. Louis by exploring options for tickets in the afternoon.
Cheap Delta flights from Chicago to St. Louis
Consider these cheap Delta flights we've found departing from Chicago to St. Louis. It's recommended that users confirm their flight details before booking.
Cheap Frontier flights from Chicago to St. Louis
Have a look at some of the cheapest available Frontier flights departing from Chicago and landing in St. Louis. Check back soon if you're not seeing flights that suit your needs.
Cheap Chicago to St. Louis flights in September & October 2023
The best prices found for CHI to STL flights for September, October
The lowest fares we've come across on flights traveling from Chicago to St. Louis in September and October 2023. For more flight deals, be sure to check back very soon.
Chicago to St. Louis 2023 flight deals
Cheap flights to St. Louis from Chicago found for this year
The lowest fares we've come across on flights traveling from Chicago to St. Louis in September and October 2023. For more flight deals, be sure to check back very soon.
Non-stop flights to St. Louis from Chicago
Save time with Chicago to St. Louis direct flight deals
For a quicker trip, book one of these direct flights from Chicago to St. Louis. Users seeking other options on flights from Chicago to St. Louis should update the search form at the top of the page.
Chicago to St. Louis flights leaving soon
Late deals on return flights to St. Louis from Chicago, departing today and this week
Have a look at some of the flights available from Chicago to St. Louis departing last-minute. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
One-way flights to St. Louis from Chicago
The cheapest one-way flights from Chicago to St. Louis
Take a look at some of the best available options we've come across on one-way flights from Chicago to St. Louis. Users in need of a round-trip flight from Chicago to St. Louis instead should update the search form at the top of page.
Find flights from Chicago to St. Louis within your budget
Use the slider to find flights from Chicago to St. Louis that fit your budget.
Fly from
Fly to
Budget
$124 - $221
Route
Depart
Return
Price
Chicago O'Hare IntlLambert-St Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
sáb. 10/28
1 stop9h 59m
Lambert-St Louis
sáb. 11/4
1 stop10h 17m
Chicago O'Hare IntlLambert-St Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
lun. 10/23
1 stop24h 35m
Lambert-St Louis
lun. 10/30
1 stop3h 15m
Chicago O'Hare IntlLambert-St Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
jue. 10/26
1 stop3h 05m
Lambert-St Louis
dom. 10/29
1 stop3h 15m
Chicago O'Hare IntlLambert-St Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
mar. 11/7
1 stop3h 05m
Lambert-St Louis
sáb. 11/11
1 stop10h 24m
Chicago O'Hare IntlLambert-St Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
mié. 10/25
Nonstop1h 25m
Lambert-St Louis
mié. 10/25
Nonstop1h 18m
Chicago O'Hare IntlLambert-St Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
sáb. 10/28
1 stop4h 35m
Lambert-St Louis
sáb. 11/4
Nonstop1h 23m
Chicago MidwayLambert-St Louis
MDW - STL
MDWSTL
Chicago Midway
sáb. 10/21
1 stop6h 06m
Lambert-St Louis
lun. 10/23
1 stop4h 40m
Chicago O'Hare IntlLambert-St Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
lun. 10/23
2 stops19h 12m
Lambert-St Louis
lun. 10/30
2 stops22h 19m
Chicago MidwayLambert-St Louis
MDW - STL
MDWSTL
Chicago Midway
vie. 11/3
1 stop10h 47m
Lambert-St Louis
dom. 11/5
1 stop10h 01m
Reviews of airlines servicing St. Louis
To help decide which airline to fly from Chicago to St. Louis, see what other customers have to say about Delta, Frontier and American Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Entertainment
Overall
Crew
Food
Boarding
Reviews
The flight was redirected while in flight and i understand why that could not be helped. HOWEVER, there were no instructions of what to expect while we were on the plane. That would have eliminated much angst with many passengers. The gate agents were really trying to answer questions….and one in particular was down right unaware of the feelings of the passengers. She did not listen to the questions, just kept repeating the same mantra….just being a little helpful would have gone a long way to calm people down. She literally could have made the experience much more tolerable. I wish i knew her name so you could help her understand the impact she had on several people, which spread throughout many passengers.
Comfort
Entertainment
Overall
Crew
Food
Boarding
Reviews
The flight was redirected while in flight and i understand why that could not be helped. HOWEVER, there were no instructions of what to expect while we were on the plane. That would have eliminated much angst with many passengers. The gate agents were really trying to answer questions….and one in particular was down right unaware of the feelings of the passengers. She did not listen to the questions, just kept repeating the same mantra….just being a little helpful would have gone a long way to calm people down. She literally could have made the experience much more tolerable. I wish i knew her name so you could help her understand the impact she had on several people, which spread throughout many passengers.
Comfort
Entertainment
Overall
Crew
Food
Boarding
Reviews
The flight was redirected while in flight and i understand why that could not be helped. HOWEVER, there were no instructions of what to expect while we were on the plane. That would have eliminated much angst with many passengers. The gate agents were really trying to answer questions….and one in particular was down right unaware of the feelings of the passengers. She did not listen to the questions, just kept repeating the same mantra….just being a little helpful would have gone a long way to calm people down. She literally could have made the experience much more tolerable. I wish i knew her name so you could help her understand the impact she had on several people, which spread throughout many passengers.
Comfort
Entertainment
Overall
Crew
Food
Boarding
Reviews
The flight was redirected while in flight and i understand why that could not be helped. HOWEVER, there were no instructions of what to expect while we were on the plane. That would have eliminated much angst with many passengers. The gate agents were really trying to answer questions….and one in particular was down right unaware of the feelings of the passengers. She did not listen to the questions, just kept repeating the same mantra….just being a little helpful would have gone a long way to calm people down. She literally could have made the experience much more tolerable. I wish i knew her name so you could help her understand the impact she had on several people, which spread throughout many passengers.
Comfort
Entertainment
Overall
Crew
Food
Boarding
Reviews
The flight was redirected while in flight and i understand why that could not be helped. HOWEVER, there were no instructions of what to expect while we were on the plane. That would have eliminated much angst with many passengers. The gate agents were really trying to answer questions….and one in particular was down right unaware of the feelings of the passengers. She did not listen to the questions, just kept repeating the same mantra….just being a little helpful would have gone a long way to calm people down. She literally could have made the experience much more tolerable. I wish i knew her name so you could help her understand the impact she had on several people, which spread throughout many passengers.
Comfort
Entertainment
Overall
Crew
Food
Boarding
Reviews
The flight was redirected while in flight and i understand why that could not be helped. HOWEVER, there were no instructions of what to expect while we were on the plane. That would have eliminated much angst with many passengers. The gate agents were really trying to answer questions….and one in particular was down right unaware of the feelings of the passengers. She did not listen to the questions, just kept repeating the same mantra….just being a little helpful would have gone a long way to calm people down. She literally could have made the experience much more tolerable. I wish i knew her name so you could help her understand the impact she had on several people, which spread throughout many passengers.
Related info for your journey
Useful info, stats and facts about Chicago to St. Louis flights.
What airport do you fly into for flights to St. Louis from Chicago?
If you book a flight to St. Louis from Chicago, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There are 48 flights from Chicago to Lambert-St Louis per day from 3 different airlines.
Can I find flights from Chicago to St. Louis for under $200 on Cheapflights?
Yes, there are multiple flights from Chicago to St. Louis for under $200. The cheapest flight booked recently is on Multiple Airlines for just $124, but on average you can expect to pay $140.
Are there nonstop flights from Chicago to St. Louis for under $200 on Cheapflights?
Cheapflights has at least 20 direct flights from Chicago to St. Louis under $200. A good price for a nonstop flight from Chicago to St. Louis is less than $244.
Are there last-minute flights available from Chicago to St. Louis for under $200?
There are currently 20+ open flights from Chicago to St. Louis within the next 7 days for less than $200.
What days are nonstop flights available from Chicago to St. Louis?
Nonstop flights are available for this route on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.
How many flights depart from Chicago to St. Louis on average per day?
Travelers can expect 51 flights from Chicago to St. Louis on average per day.
Morning (6am - Noon) - 22% of flight departures
Afternoon (Noon - 6pm) - 29% of flight departures
Evening (6pm - Midnight) - 49% of flight departures
How long is the flight from Chicago to St. Louis?
Airlines like Southern / Mokulele, United Airlines, and American Airlines fly from Chicago to St. Louis in about 1h 25m. The time it takes to get you to your destination can typically vary by up to 23h 10m. The distance from Chicago to St. Louis is about 259 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Chicago to St. Louis round-trip?
Southern / Mokulele, at $126, was found to be the cheapest airline from Chicago to St. Louis.Alternate airlines to your destination round-trip include United Airlines and American Airlines. These flights start at 55% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Chicago to St. Louis one-way?
One-way options have recently been found by users for as low as $45 on Frontier. Other airlines that offer cheap prices include Southern / Mokulele from $65 and United Airlines from $72 one-way.
What are the most popular airlines that fly from Chicago to St. Louis?
Southern / Mokulele, American Airlines and United Airlines are the most popular airlines when flying from Chicago to St. Louis.
What are the most reliable airlines from Chicago to St. Louis?
No one likes to see their flight delayed. When booking a flight from Chicago to St. Louis consider choosing Turkish Airlines (87%), Austrian Airlines (85%) or GoJet (84%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Chicago to St. Louis?
The cheapest flight price from Chicago to St. Louis is $88. On average you can expect to pay $355. The most popular route, (Chicago O'Hare Intl - Lambert-St Louis), can usually be booked for $126.
What does ORD to STL mean?
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Chicago O'Hare Intl Airport to Lambert-St Louis Airport flight would often be abbreviated as a ORD to STL flight. Ready for more IATA code knowledge? These are related airports for your current travel destination: Chicago Midway Airport (MDW), Chicago Greater Rockford Airport (RFD).
Other flights from Chicago
Flights to St. Louis from Chicago
Top 3 airlines flying from Chicago to St. Louis
The chart below displays the airlines Cheapflights users traveling from Chicago to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Hourly flight availability from Chicago to St. Louis
See what time of day planes typically take off from Chicago to St. Louis
| 3%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 26%of flight departures | Morning6 am to noon |
| 42%of flight departures | AfternoonNoon to 6 pm |
| 29%of flight departures | Evening6 pm to midnight |
Weekly flight availability from Chicago to St. Louis
See how many times per day planes take to the skies headed from Chicago to St. Louis
| Sunday | 49daily flights |
|---|---|
| Monday | 54daily flights |
| Tuesday | 46daily flights |
| Wednesday | 48daily flights |
| Thursday | 52daily flights |
| Friday | 54daily flights |
| Saturday | 36daily flights |
Fly with Cheapflights
What makes Cheapflights the go-to destination for all your flight needs
How does Cheapflights help users find flights from Chicago to St. Louis?
When you search for this flight from Chicago to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Chicago to St. Louis?
Cheapflights helps you find that perfect flight to St. Louis from Chicago by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Chicago to St. Louis with no change fees?
Yes! Cheapflights helps users easily find flights from Chicago to St. Louis with no change fees.
Can Cheapflights notify me if prices for flights from Chicago to St. Louis become cheaper?
Of course! You can now track prices for flights from Chicago to St. Louis and get an alert from Cheapflights when they change. Have a valid email address ready and make a flight search when you’re ready to set up your price alert.