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$50+ Cheap flights from Chicago (CHI) to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — STL
sep. 10 — sep. 171
From?
To?
mar. 9/10
mar. 9/17
1 adult, Economy
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Find cheap flights from Chicago to St. Louis with Cheapflights

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The best prices from Chicago to Lambert-St Louis are usually found in September or March, booked 50 days in advance, depart on a Saturday or Thursday and return on a Tuesday

Cheap flight deals from Chicago to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 5, 2024.

Popular in

August

Cheapest in

September

Round-trip from

$104
(Mytrip)

One-way from

$50
(Mytrip)
High demand for flights, 19% potential price rise
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Best time to find cheap flights, 18% potential price drop
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From Chicago (CHI) to Lambert-St Louis
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One-way flight from Chicago (CHI) to Lambert-St Louis
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Cheap Chicago to St. Louis flights in September & October 2024

Find cheap flight options from Chicago to St. Louis specifically for the months of September and October 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,924,376 searches. Prices were last updated on septiembre 5, 2024.
The lowest fares we've come across on flights traveling from Chicago to St. Louis in September and October 2024. For more flight deals, be sure to check back very soon.
This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/299:45 amMDW - STL
1 stop13h 34mFrontier
mar. 11/57:29 pmSTL - MDW
1 stop11h 04mFrontier
Deal found 9/4$104
This lastminute.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/38:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
sáb. 10/512:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 9/4$104
This Frontier deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/35:58 pmORD - STL
1 stop13h 03mFrontier
jue. 10/1012:23 pmSTL - ORD
1 stop7h 01mFrontier
Deal found 9/5$108
This Mytrip deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/109:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
lun. 10/142:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Deal found 9/3$110
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/48:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
mar. 10/812:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 9/5$111
This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/258:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
lun. 10/2812:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 9/4$112
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/289:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
mar. 10/112:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 9/5$113
This Trip.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/48:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
dom. 10/612:15 pmSTL - ORD
1 stop19h 25mSouthern / Mokulele
Deal found 9/4$116
This Frontier deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/2710:44 amORD - STL
1 stop8h 01mFrontier
jue. 10/39:43 amSTL - ORD
1 stop7h 10mFrontier
Deal found 9/5$118

Chicago to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Chicago and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,924,376 searches. Data last updated septiembre 5, 2024.
The lowest fares we've come across on flights traveling from Chicago to St. Louis in September and October 2024. For more flight deals, be sure to check back very soon.
This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/299:45 amMDW - STL
1 stop13h 34mFrontier
mar. 11/57:29 pmSTL - MDW
1 stop11h 04mFrontier
Deal found 9/4$104
This lastminute.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/38:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
sáb. 10/512:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 9/4$104
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/35:58 pmORD - STL
1 stop13h 03mFrontier
jue. 10/1012:23 pmSTL - ORD
1 stop7h 01mFrontier
Deal found 9/4$108
This Mytrip deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/109:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
lun. 10/142:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Deal found 9/3$110
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/48:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
mar. 10/812:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 9/5$111
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/216:06 amORD - STL
1 stop8h 19mMultiple Airlines
mié. 10/2312:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 9/5$112
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/289:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
lun. 9/3012:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 9/5$113
This Trip.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/48:25 amORD - STL
1 stop11h 30mSouthern / Mokulele
dom. 10/612:15 pmSTL - ORD
1 stop19h 25mSouthern / Mokulele
Deal found 9/4$116
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/2710:44 amORD - STL
1 stop8h 01mFrontier
sáb. 10/55:20 pmSTL - ORD
1 stop5h 44mFrontier
Deal found 9/4$118

Chicago to St. Louis flights leaving soon

Find last-minute flight options from Chicago to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,924,376 searches. Data last updated septiembre 5, 2024.
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.
This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/1012:30 pmORD - STL
1 stop18h 30mSouthern / Mokulele
jue. 12/1212:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 9/4$168
This CheapOair deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/1212:05 pmORD - STL
1 stop4h 10mMultiple Airlines
jue. 9/199:43 amSTL - ORD
1 stop7h 10mMultiple Airlines
Deal found 9/4$193
This Southern / Mokulele deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/159:35 pmORD - STL
1 stop11h 15mSouthern / Mokulele
mar. 9/2412:15 pmSTL - ORD
1 stop19h 25mSouthern / Mokulele
Deal found 9/4$196
This Frontier deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/125:58 pmORD - STL
1 stop13h 03mFrontier
jue. 9/199:43 amSTL - ORD
1 stop7h 10mFrontier
Deal found 9/5$198
This Mytrip deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/158:15 amORD - STL
1 stop3h 55mSouthern / Mokulele
dom. 9/153:55 pmSTL - ORD
1 stop4h 57mSouthern / Mokulele
Deal found 9/3$208
This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/127:05 amORD - STL
1 stop5h 55mSouthern / Mokulele
dom. 9/1512:45 pmSTL - ORD
1 stop3h 47mSouthern / Mokulele
Deal found 9/4$215
This Southern / Mokulele deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/159:35 pmORD - STL
1 stop11h 15mSouthern / Mokulele
lun. 9/2312:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 9/4$216
This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/127:05 amORD - STL
1 stop5h 55mSouthern / Mokulele
jue. 9/128:35 pmSTL - ORD
1 stop15h 22mSouthern / Mokulele
Deal found 9/4$217
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/1112:05 pmORD - STL
1 stop20h 45mSouthern / Mokulele
dom. 9/1512:45 pmSTL - ORD
1 stop3h 47mSouthern / Mokulele
Deal found 9/5$218

One-way flights to St. Louis from Chicago

Search for one-way flight options from Chicago to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,924,376 searches. Data last updated septiembre 5, 2024.
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.
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/236:25 pmORD - STL
1 stop6h 11mFrontier
Deal found 9/5$50
This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/236:25 pmORD - STL
1 stop6h 11mFrontier
Deal found 9/4$52
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/284:19 pmMDW - STL
1 stop7h 14mFrontier
Deal found 9/4$54
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/14:36 pmORD - STL
1 stop6h 43mFrontier
Deal found 9/4$54
This Mytrip deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/236:05 amMDW - STL
1 stop18h 31mFrontier
Deal found 9/5$56
This Mytrip deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/236:05 amMDW - STL
1 stop18h 31mFrontier
Deal found 9/4$57
This Priceline deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/46:06 amORD - STL
1 stop8h 19mFrontier
Deal found 9/3$59
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/76:00 amMDW - STL
1 stop8h 53mFrontier
Deal found 9/4$60
This Frontier deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/35:58 pmORD - STL
1 stop13h 03mFrontier
Deal found 9/4$60

Find flights from Chicago to St. Louis within your budget

Customize your flight search to find flights from Chicago to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,924,376 searches. Data last updated septiembre 5, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$104 - $214

Route

Depart

Return

Price

Chicago MidwayLambert-St Louis

MDW - STL

MDWSTL

Chicago Midway

mar. 10/29

1 stop13h 34m

Lambert-St Louis

mar. 11/5

1 stop11h 04m

$104

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 10/3

1 stop11h 30m

Lambert-St Louis

sáb. 10/5

1 stop3h 35m

$104

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 10/3

1 stop13h 03m

Lambert-St Louis

jue. 10/10

1 stop7h 01m

$108

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 10/10

1 stop19h 20m

Lambert-St Louis

lun. 10/14

1 stop26h 10m

$110

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

lun. 10/21

1 stop8h 19m

Lambert-St Louis

mié. 10/23

1 stop3h 35m

$112

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

sáb. 9/28

2 stops21h 13m

Lambert-St Louis

lun. 9/30

2 stops30h 20m

$167

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

jue. 10/3

Nonstop1h 17m

Lambert-St Louis

jue. 10/10

Nonstop1h 21m

$195

Chicago MidwayLambert-St Louis

MDW - STL

MDWSTL

Chicago Midway

vie. 9/27

Nonstop1h 10m

Lambert-St Louis

lun. 9/30

Nonstop1h 10m

$196

Chicago MidwayLambert-St Louis

MDW - STL

MDWSTL

Chicago Midway

jue. 11/28

1 stop6h 54m

Lambert-St Louis

dom. 12/15

1 stop5h 46m

$214

Flights are sorted by cheapest first

Deals found on 9/4

Compare providers for flights from Chicago to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to St. Louis in September.
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
MytripPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
Booking.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
oojoPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Best time to book a flight from Chicago to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Chicago to St. Louis

Get recent, data-driven insights about flights from Chicago to St. Louis including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Chicago to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to St. Louis. Price data was last updated on August 30, 2024.

The price you pay for your flight from Chicago to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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What is the cheapest month to book a flight from Chicago to St. Louis?

Currently, September is the cheapest month in which you can book a flight from Chicago to St. Louis (average of $60). Flying from Chicago to St. Louis in March is currently the most expensive (average of $139). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to STL?

Find hourly flight availability from Chicago to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 5, 2024.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 25% on flights from Chicago to St. Louis by exploring options for tickets at noon.

What is the cheapest day to fly from Chicago to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Chicago to St. Louis. Price data was last updated on September 1, 2024.

Travelers seeking maximum savings on their Chicago to St. Louis flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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Weekly flight availability from Chicago to St. Louis

Explore weekly flight availability from Chicago to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated septiembre 5, 2024.

The most flights from CHI to STL are scheduled on a Friday (69 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (40 on average).

What are the most popular airlines that fly from Chicago to St. Louis?

Our users search for these airlines the most when looking for flights from Chicago to St. Louis. Data last updated on septiembre 5, 2024.

American Airlines, United Airlines and Southern / Mokulele are the most popular airlines when flying from Chicago to St. Louis.

American Airlines

American Airlines

From $101

United Airlines

United Airlines

From $137

Southern / Mokulele

Southern / Mokulele

From $138

Southwest

Southwest

From $116

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated septiembre 5, 2024.
To help decide which airline to fly from Chicago to St. Louis, see what other customers have to say about Frontier, Southern / Mokulele 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.
Southwest
8.2
Very good
5,383 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Entertainment

7.8

Comfort

8.1

Food

7.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.2
Very good
5,383 reviews
Southwest
8.2
Very good
5,383 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Entertainment

7.8

Comfort

8.1

Food

7.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
9,185 reviews
Southwest
8.2
Very good
5,383 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Entertainment

7.8

Comfort

8.1

Food

7.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,648 reviews
Southwest
8.2
Very good
5,383 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Entertainment

7.8

Comfort

8.1

Food

7.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.3
Good
10,000 reviews
Southwest
8.2
Very good
5,383 reviews

Boarding

8.3

Overall

8.2

Crew

8.7

Entertainment

7.8

Comfort

8.1

Food

7.3

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Chicago to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 57 flights from Chicago to Lambert-St Louis per day from 4 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 Frontier for just $104, but on average you can expect to pay $118.

  • 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 $248.

  • 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: Friday, Saturday.

  • How many flights depart from Chicago to St. Louis on average per day?

    Travelers can expect 4 flights from Chicago to St. Louis on average per day.
    Morning (6am - Noon) - 100% of flight departures

  • How long is the flight from Chicago to St. Louis?

    Airlines like Frontier and Southern / Mokulele fly from Chicago to St. Louis in about 11h 30m. The time it takes to get you to your destination can typically vary by up to 2h 04m. 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?

    Frontier, at $104, was found to be the cheapest airline from Chicago to St. Louis. An alternate airline flying to your destination would be Southern / Mokulele. These flights start at 61% 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 $50 on Frontier. Other airlines that offer cheap prices include Southern / Mokulele from $61 and Spirit Airlines from $85 one-way.

  • 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 Air Wisconsin (100%), SkyWest Airlines (86%) or GoJet (85%) 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 $46. On average you can expect to pay $215. The most popular route, (Chicago O'Hare Intl - Lambert-St Louis), can usually be booked for $104.

  • 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).

  • Can I find deals for flights from Chicago to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Chicago to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Chicago to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Chicago to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Chicago to St. Louis that include hotel bookings?

    Yes. In addition to deals on Chicago to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to St. Louis.

  • Can I find deals for business class flights from Chicago to St. Louis?

    Yes. Cheapflights offers flight deals from Chicago to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Chicago to St. Louis that allow pets onboard?

    Many airlines flying from Chicago to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Chicago to St. Louis?

    Yes, you can often find last-minute deals on Chicago to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Chicago to St. Louis flight deals updated?

    The Chicago to St. Louis flight deals you see on this page were last updated on 9/5.

  • What is the cheapest month to book a flight from Chicago to St. Louis?

    Currently, September is the cheapest month in which you can book a flight from Chicago to St. Louis (average of $60). Flying from Chicago to St. Louis in March is currently the most expensive (average of $139). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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