Cheap flights from St. Louis to Chicago (STL - CHI)

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

The best prices from Lambert-St Louis to Chicago are usually found in July or August, booked 54 days in advance, depart on a Monday or Wednesday and return on a Saturday

How to find the cheapest flight from
St. Louis (STL) to Chicago (CHI)

All the information you need to plan the best STL to CHI flight in 2021: compare St. Louis to Chicago flight prices with the expected peak season, weather and rainfall in Chicago.
STL - CHI
Price
$156 - $284
CHI
Temperature
33.8 - 84.2 °F
CHI
Precipitation
0.7 - 4.3 inches

Popular in

December

High demand for flights, 21% potential price rise

Cheapest in

July

Best time to find cheap flights, 31% potential price drop

Round-trip from

$156

From Lambert-St Louis to Chicago

One-way from

$63

One-way flight from Lambert-St Louis to Chicago

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from St. Louis to Chicago?

Leaving on a Sunday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 12% on the overall cost on flights from St. Louis to Chicago.

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

Users have found that booking a flight from St. Louis to Chicago at least 54 days early can save you up to 22% on average compared to booking a flight this week. If booking 54 days before your flight isn’t an option for you, users have found flights from St. Louis to Chicago for as little as $260 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $279 for flights departing within the next 3 days.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, July can be a great choice for travel to Chicago. Flights to Chicago from St. Louis in July are about $225 on average during July, but can be found for as low as $68.

When is the cheapest time to fly from St. Louis to Chicago (STL - CHI)?

It’s optimal to fly from St. Louis to Chicago in the morning. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight in the afternoon.

Cheap flights from St. Louis to Chicago in September, October 2021

The best prices found for STL to CHI flights for September, October
6 Oct - 19 Oct
$90pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
2 Oct - 5 Oct
$102pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
13 Oct - 15 Oct
$103pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to Chicago 2021 flight deals

Cheap flights to Chicago from St. Louis found for this year
6 Oct - 19 Oct
$90pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
2 Oct - 5 Oct
$102pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
13 Oct - 15 Oct
$103pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Non-stop flights to Chicago from St. Louis

Save time with St. Louis to Chicago direct flight deals
6 Oct - 19 Oct
$155pp
STL
Lambert-St Louis
American Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
American Airlines
Non-Stop
STL
Lambert-St Louis
8 Oct - 12 Oct
$175pp
STL
Lambert-St Louis
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
STL
Lambert-St Louis
30 Sep - 13 Nov
$177pp
STL
Lambert-St Louis
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
STL
Lambert-St Louis

Last minute flights from St. Louis to Chicago

Late deals on round-trip flights to Chicago from St. Louis, departing today and this week
24 Sep - 5 Oct
$114pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
25 Sep - 29 Sep
$119pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
24 Sep - 29 Sep
$120pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

One-way flights to Chicago from St. Louis

The cheapest one-way flights from St. Louis to Chicago
11:41 am - 1:33 pm
Multiple Airlines
2 Stops
25h 52m
STL - ORD
Multiple Airlines
$63
Kiwi.com
3:58 pm - 10:25 am
Frontier
1 Stop
18h 27m
STL - ORD
Frontier
$67
Kiwi.com
9:40 am - 1:10 pm
Air Choice One
1 Stop
3h 30m
STL - ORD
Air Choice One
$69
Gotogate

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Chicago</span> flights.

Flight FAQs

From St. Louis to Chicago

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 57 flights from Lambert-St Louis to Chicago per day from 8 different airlines.

Which airlines flying from Lambert-St Louis to Chicago have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Lambert-St Louis to Chicago that may be offering flexible cancellation policies are American Airlines, United Airlines, and Cape Air. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Are flight prices decreasing from St. Louis to Chicago due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both St. Louis and Chicago for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from St. Louis to Chicago for under $100 on Cheapflights?

Yes, there are multiple flights from St. Louis to Chicago for under $100. The cheapest flight booked recently is on Multiple Airlines for just $90, but on average you can expect to pay $115.

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

Cheapflights has at least 20 direct flights from St. Louis to Chicago under $200. A good price for a nonstop flight from St. Louis to Chicago is less than $236.

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

There are currently 20+ open flights from St. Louis to Chicago within the next 7 days for less than $200.

What days are nonstop flights available from St. Louis to Chicago?

Nonstop flights can be found on the following days: Monday, Tuesday.

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

5 flight departures from St. Louis to Chicago per day on average.
Afternoon (Noon - 6pm) - 60% of flight departures
Evening (6pm - Midnight) - 40% of flight departures

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

For as low as $105, Spirit Airlines can have you in Chicago from St. Louis in 13h 31m. St. Louis and Chicago are separated by a distance of 259 mi.

What is the cheapest airline to fly from St. Louis to Chicago round-trip?

Our cheapest airline available from St. Louis to Chicago is Spirit Airlines. Our recent data shows that you can find tickets from as low as $105 on this airline. Spirit Airlines is currently priced 53% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from St. Louis to Chicago one-way?

The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $46. However, be on the lookout for offers from Frontier and Air Choice One, as they are both options that can get you from St. Louis to Chicago for a low price.

COVID Restrictions

View COVID Travel Restrictions for Chicago, IL

Do I need a COVID test to fly to Chicago from St. Louis?

Information is based on travel restrictions for travel to Chicago within the United States

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Chicago.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Chicago.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Chicago.

Do I need a test to fly back to St. Louis from Chicago?

Returning to Lambert-St Louis from Chicago

COVID-19 testing requirements
Visitors from Chicago must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Chicago are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Chicago, IL

Alternative routes for St. Louis to Chicago

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Chicago

Things to know before you go - useful duration and weather info for your trip from St. Louis to Chicago.
Average temperature for September in Chicago
77.0 °F
Avg rainfall for September in Chicago
2.4 ″

Airports servicing St. Louis

Airports servicing Chicago

Midway (MDW)
Rockford (RFD)

Top 5 airlines flying from Lambert-St Louis to Chicago

The chart below displays the airlines Cheapflights users traveling from St. Louis to Chicago choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Cape Air
$73 $154 No cancel fee 63%

We couldn't confirm the COVID-19 safety measures taken by Cape Air. Please check directly on their website for additional information.

United Airlines
$131 $296 No cancel fee 69%
American Airlines
$147 $310 No cancel fee 71%
Delta
$158 $402 No cancel fee N/A
Linear Air Taxi
$2,484 $5,165 No cancel fee N/A

We couldn't confirm the COVID-19 safety measures taken by Linear Air Taxi. Please check directly on their website for additional information.

Hourly flight availability from St. Louis to Chicago

See what time of day planes typically take off from St. Louis towards Chicago.
Morning 6 AM to noon 56% of STL to CHI departures
Afternoon Noon to 6 PM 33% of STL to CHI departures
Early morning Midnight to 6 AM 11% of STL to CHI departures
Evening 6 PM to midnight 0% of STL to CHI departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from St. Louis to Chicago
See how many times per day planes take to the skies headed from St. Louis to Chicago.
Sunday
47 daily flights
Monday
67 daily flights
Tuesday
45 daily flights
Wednesday
48 daily flights
Thursday
60 daily flights
Friday
71 daily flights
Saturday
61 daily flights
Home North America USA Illinois Chicago Cheap flights from St. Louis to Chicago