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STL - CHI
Sep 17 - Sep 24
Chicago

$54+ Cheap flights from St. Louis (STL) to Chicago (CHI)

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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — CHI
Sep 17 — Sep 241
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STL - CHI
Sep 17 - Sep 24

Find cheap flights from St. Louis to Chicago with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
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3. Compare prices and book
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The best prices from Lambert-St Louis to Chicago are usually found in September or May, booked 77 days in advance, depart on a Tuesday or Thursday and return on a Saturday

Cheap flight deals from St. Louis to Chicago

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Chicago (CHI). 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 September 12, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

March

Cheapest in

September

Round-trip from

$107
(Mytrip)

One-way from

$54
(Frontier)
Provider with most accurate pricing for Lambert-St Louis-Chicago (CHI) flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Chicago (CHI) flights.
High demand for flights, 17% potential price rise
Best time to find cheap flights, 17% potential price drop
From Lambert-St Louis to Chicago (CHI)
One-way flight from Lambert-St Louis to Chicago (CHI)

Cheap St. Louis to Chicago flights in September & October 2024

Find cheap flight options from St. Louis to Chicago specifically for the months of September and October 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,854,678 searches. Prices were last updated on September 12, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Chicago in 2024. More deals are always being added, so be sure to check back regularly.
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Tue 10/15:30 pmSTL - MDW
1 stop22h 22mFrontier
Mon 10/216:05 amMDW - STL
1 stop18h 30mFrontier
Deal found 9/11$107
This Frontier deal was found by Cheapflights users on 9/12. 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.
Mon 9/309:33 amSTL - ORD
1 stop9h 58mFrontier
Wed 10/24:36 pmORD - STL
1 stop7h 13mFrontier
Deal found 9/12$108
This Mytrip deal was found by Cheapflights users on 9/12. 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.
Mon 10/72:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Wed 10/99:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Deal found 9/12$111
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Sat 10/1912:00 pmSTL - ORD
1 stop4h 10mMultiple Airlines
Sat 10/264:44 pmORD - STL
1 stop6h 44mMultiple Airlines
Deal found 9/11$116
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/86:10 amSTL - MDW
Nonstop1h 10mSouthwest
Tue 10/810:55 amMDW - STL
Nonstop1h 15mSouthwest
Deal found 9/11$133
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/86:00 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Tue 10/88:17 pmORD - STL
Nonstop1h 27mAmerican Airlines
Deal found 9/11$137
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/86:30 amSTL - MDW
1 stop6h 02mDelta
Tue 10/86:52 pmMDW - STL
1 stop4h 48mDelta
Deal found 9/11$156
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/146:30 amSTL - ORD
Nonstop1h 35mUnited Airlines
Tue 10/152:40 pmORD - STL
Nonstop1h 19mUnited Airlines
Deal found 9/11$184
This Delta deal was found by Cheapflights users on 9/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/56:06 amSTL - ORD
2 stops6h 46mDelta
Tue 10/86:00 amORD - STL
1 stop4h 30mDelta
Deal found 9/12$190

St. Louis to Chicago 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Chicago in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,854,678 searches. Data last updated September 12, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Chicago in 2024. More deals are always being added, so be sure to check back regularly.
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Tue 10/15:30 pmSTL - MDW
1 stop22h 22mFrontier
Mon 10/216:05 amMDW - STL
1 stop18h 30mFrontier
Deal found 9/11$107
This Frontier deal was found by Cheapflights users on 9/12. 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.
Mon 9/309:33 amSTL - ORD
1 stop9h 58mFrontier
Wed 10/24:36 pmORD - STL
1 stop7h 13mFrontier
Deal found 9/12$108
This Mytrip deal was found by Cheapflights users on 9/12. 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.
Mon 10/72:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Wed 10/99:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Deal found 9/12$111
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Thu 11/1412:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Sat 11/164:40 pmORD - STL
1 stop6h 45mMultiple Airlines
Deal found 9/11$115
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/86:10 amSTL - MDW
Nonstop1h 10mSouthwest
Tue 10/810:55 amMDW - STL
Nonstop1h 15mSouthwest
Deal found 9/11$133
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/86:00 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Tue 10/88:17 pmORD - STL
Nonstop1h 27mAmerican Airlines
Deal found 9/11$137
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/28:05 amSTL - ORD
Nonstop1h 29mUnited Airlines
Wed 11/62:15 pmORD - STL
Nonstop1h 24mUnited Airlines
Deal found 9/11$152
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/86:30 amSTL - MDW
1 stop6h 02mDelta
Tue 10/86:52 pmMDW - STL
1 stop4h 48mDelta
Deal found 9/11$156
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/146:30 amSTL - ORD
1 stop6h 20mDelta
Sat 11/167:10 amORD - STL
1 stop4h 35mDelta
Deal found 9/11$186

St. Louis to Chicago flights leaving soon

Find last-minute flight options from St. Louis to Chicago 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 2,854,678 searches. Data last updated September 12, 2024.
Consider one of these great deals we found on last-minute flights from St. Louis to Chicago. Tip: verify your flight details before completing your reservation.
This Mytrip deal was found by Cheapflights users on 9/12. 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.
Thu 9/199:20 amSTL - ORD
1 stop7h 12mMultiple Airlines
Thu 9/2611:42 amORD - STL
1 stop11h 37mMultiple Airlines
Deal found 9/12$176
This Mytrip deal was found by Cheapflights users on 9/12. 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.
Fri 9/209:35 amSTL - ORD
1 stop26h 22mSouthern / Mokulele
Wed 9/259:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Deal found 9/12$205
This Mytrip deal was found by Cheapflights users on 9/12. 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.
Fri 9/203:53 pmSTL - MDW
1 stop7h 12mFrontier
Wed 9/259:50 amMDW - STL
1 stop13h 59mFrontier
Deal found 9/12$263
This FareScan deal was found by Cheapflights users on 9/12. 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 FareScan is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/198:57 amSTL - ORD
2 stops31h 03mSpirit Airlines
Thu 9/265:20 amORD - STL
3 stops26h 42mSpirit Airlines
Deal found 9/12$319
This Southwest deal was found by Cheapflights users on 9/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/205:40 amSTL - MDW
Nonstop1h 10mSouthwest
Sun 9/296:15 amMDW - STL
Nonstop1h 10mSouthwest
Deal found 9/12$411
This American Airlines deal was found by Cheapflights users on 9/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/197:30 amSTL - ORD
Nonstop1h 21mAmerican Airlines
Mon 9/308:51 pmORD - STL
Nonstop1h 17mAmerican Airlines
Deal found 9/11$440
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Thu 9/195:15 pmSTL - MDW
2 stops22h 30mMultiple Airlines
Sun 9/227:42 pmMDW - STL
3 stops22h 59mMultiple Airlines
Deal found 9/11$479
This KAYAK deal was found by Cheapflights users on 9/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/175:19 pmSTL - ORD
1 stop6h 40mDelta
Wed 9/187:03 amORD - STL
1 stop6h 22mDelta
Deal found 9/11$506
This KAYAK deal was found by Cheapflights users on 9/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/176:00 amSTL - MDW
2 stops6h 28mDelta
Wed 9/186:00 amMDW - STL
1 stop5h 43mDelta
Deal found 9/11$511

One-way flights to Chicago from St. Louis

Search for one-way flight options from St. Louis to Chicago. 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 2,854,678 searches. Data last updated September 12, 2024.
Take a look at some of the one-way flights we've detected from St. Louis to Chicago. Users can also find round-trip St. Louis to Chicago flights by using the search form above.
This Frontier deal was found by Cheapflights users on 9/11. 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.
Mon 10/213:16 pmSTL - MDW
1 stop5h 26mFrontier
Deal found 9/11$54
This Frontier deal was found by Cheapflights users on 9/11. 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.
Wed 10/25:20 pmSTL - ORD
1 stop5h 44mFrontier
Deal found 9/11$54
This Trip.com deal was found by Cheapflights users on 9/11. 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.
Mon 10/1412:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 9/11$55
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/28:20 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 9/11$69
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:09 amSTL - ORD
Nonstop1h 21mUnited Airlines
Deal found 9/11$69
This Delta deal was found by Cheapflights users on 9/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/911:20 amSTL - MDW
1 stop5h 43mDelta
Deal found 9/11$78
This Delta deal was found by Cheapflights users on 9/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/93:19 pmSTL - ORD
1 stop4h 27mDelta
Deal found 9/10$78
This American Airlines deal was found by Cheapflights users on 9/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/156:00 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 9/12$99
This Southwest deal was found by Cheapflights users on 9/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:00 amSTL - ORD
2 stops6h 55mSouthwest
Deal found 9/11$113

Find flights from St. Louis to Chicago within your budget

Customize your flight search to find flights from St. Louis to Chicago 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 2,854,678 searches. Data last updated September 12, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$107 - $249

Route

Depart

Return

Price

Lambert-St LouisChicago Midway

STL - MDW

STLMDW

Lambert-St Louis

Tue 10/1

1 stop22h 22m

Chicago Midway

Mon 10/21

1 stop18h 30m

$107

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Mon 9/30

1 stop9h 58m

Chicago O'Hare Intl

Wed 10/2

1 stop7h 13m

$108

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Mon 10/7

1 stop26h 10m

Chicago O'Hare Intl

Wed 10/9

1 stop14h 05m

$111

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Thu 11/14

1 stop3h 35m

Chicago O'Hare Intl

Sat 11/16

1 stop6h 45m

$115

Lambert-St LouisChicago Midway

STL - MDW

STLMDW

Lambert-St Louis

Tue 10/8

Nonstop1h 10m

Chicago Midway

Tue 10/8

Nonstop1h 15m

$133

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Tue 10/8

Nonstop1h 19m

Chicago O'Hare Intl

Tue 10/8

Nonstop1h 27m

$137

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Sat 11/2

Nonstop1h 29m

Chicago O'Hare Intl

Wed 11/6

Nonstop1h 24m

$152

Lambert-St LouisChicago Midway

STL - MDW

STLMDW

Lambert-St Louis

Tue 10/8

1 stop6h 02m

Chicago Midway

Tue 10/8

1 stop4h 48m

$156

Lambert-St LouisChicago O'Hare Intl

STL - ORD

STLORD

Lambert-St Louis

Mon 9/30

3 stops35h 59m

Chicago O'Hare Intl

Wed 10/2

1 stop22h 37m

$249

Flights are sorted by cheapest first

Deals found on 9/11

Compare providers for flights from St. Louis to Chicago

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 St. Louis to Chicago in September.
ProviderPrice AccuracyTrust Score*Cancellation Policy
ExpediaPrice Accuracy1 starTrust Score*3 starsCancellation PolicyAirline Policy
eDreamsPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
FlightHubPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
Booking.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
Justfly.comPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
PricelinePrice Accuracy2 starsTrust Score*3 starsCancellation PolicyAirline Policy
AranGrantPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
MytripPrice Accuracy3 starsTrust Score*3 starsCancellation PolicyAirline Policy
GotogatePrice Accuracy2 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.

  • Most accurate provider: When it comes to deals on St. Louis-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Chicago flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Chicago from St. Louis 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 St. Louis to Chicago

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Chicago. Price data was last updated on September 6, 2024.

The price you pay for your flight from St. Louis to Chicago may vary depending on when you book. For the best chance of a lower fare, look to book 77 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, May is the cheapest month in which you can book a flight from St. Louis to Chicago (average of $98). Flying from St. Louis to Chicago in June is currently the most expensive (average of $146). 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 STL to CHI?

Find hourly flight availability from St. Louis to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 12, 2024.

It’s optimal to fly from St. Louis to Chicago in the afternoon. By choosing this option you can save up to 38% on the cost of your flight, compared to a flight in the morning.

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

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Chicago. Price data was last updated on September 8, 2024.

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

Weekly flight availability from St. Louis to Chicago

Explore weekly flight availability from St. Louis to Chicago. 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 September 12, 2024.

The most flights from STL to CHI are scheduled on a Thursday (69 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 on average).

Rainfall in Chicago by month

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

In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.

Temperature in Chicago by month

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

If weather is an important factor for your trip to Chicago, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated September 12, 2024.
Peruse reviews from past customers who have flown with Delta, Southwest and Frontier from St. Louis to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.2
Very good
5,342 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.8

Overall

8.2

Boarding

8.3

Food

7.3

Reviews

1 / 10

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

8.2
Very good
5,342 reviews
8.2
Very good
5,342 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.8

Overall

8.2

Boarding

8.3

Food

7.3

Reviews

1 / 10

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

8.0
Very good
9,116 reviews
8.2
Very good
5,342 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.8

Overall

8.2

Boarding

8.3

Food

7.3

Reviews

1 / 10

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

7.4
Good
9,570 reviews
8.2
Very good
5,342 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.8

Overall

8.2

Boarding

8.3

Food

7.3

Reviews

1 / 10

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

7.3
Good
10,000 reviews
8.2
Very good
5,342 reviews

Crew

8.7

Comfort

8.1

Entertainment

7.8

Overall

8.2

Boarding

8.3

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 St. Louis to Chicago. 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 from for flights from St. Louis to Chicago?

    If you book a flight to Chicago from St. Louis, you will be flying from 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 59 flights from Lambert-St Louis to Chicago per day from 4 different airlines.

  • Can I find flights from St. Louis to Chicago for under $200 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Chicago for under $200. The cheapest flight booked recently is on Frontier for just $107, but on average you can expect to pay $178.

  • Are there nonstop flights from St. Louis to Chicago for under $200 on Cheapflights?

    Cheapflights has at least 3 direct flights from St. Louis to Chicago under $200. A good price for a nonstop flight from St. Louis to Chicago is less than $140.

  • Are there last-minute flights available from St. Louis to Chicago for under $200?

    There are currently 12+ open flights from St. Louis to Chicago within the next 7 days for less than $200.

  • What are the cheapest airlines flying from St. Louis to Chicago round-trip?</