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

STL — CHI
Sep 27 — Oct 41

The best prices from Lambert-St Louis to Chicago are usually found in January or November, booked 38 days in advance, depart on a Thursday or Tuesday 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 2022: compare St. Louis to Chicago flight prices with the expected peak season, weather and rainfall in Chicago.

STL - CHI

Price

$167 - $352

CHI

Temperature

23 - 73.4 °F

CHI

Rainfall

1.7 - 4.9 inches

Popular inJuneHigh demand for flights, 33% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 29% potential price drop
Round-trip from$167From Lambert-St Louis to Chicago (CHI)
One-way from$89One-way flight from Lambert-St Louis to Chicago (CHI)

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

Leaving on a Wednesday 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 24% 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 36 days early can save you up to 56% on average compared to booking a flight this week. If booking 36 days before your flight isn’t an option for you, users have found flights from St. Louis to Chicago for as little as $247 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 $341 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 June. For low rates, January can be a great choice for travel to Chicago. Flights to Chicago from St. Louis in January are about $237 on average during January, but can be found for as low as $136.

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 evening. By choosing this option you can save up to 61% on the cost of your flight, compared to a flight in the afternoon.

Cheap flights from St. Louis to Chicago in September, October 2022

The best prices found for STL to CHI flights for September, October
Oct 18 - Oct 25
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

28h 13m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

24h 54m
$151

Spirit Airlines

Pick Dates

Deal found 9/22/22

Oct 5 - Oct 5
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 18m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 12m
$156

American Airlines

Pick Dates

Deal found 9/21/22

Sep 27 - Oct 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

9h 30m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

11h 20m
$164

Frontier

Pick Dates

Deal found 9/21/22

St. Louis to Chicago 2022 flight deals

Cheap flights to Chicago from St. Louis found for this year
Oct 18 - Oct 25
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

28h 13m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

24h 54m
$151

Spirit Airlines

Pick Dates

Deal found 9/22/22

Oct 5 - Oct 5
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 18m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 12m
$156

American Airlines

Pick Dates

Deal found 9/21/22

Sep 27 - Oct 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

9h 30m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

11h 20m
$164

Frontier

Pick Dates

Deal found 9/21/22

Cheap Spirit Airlines flights from St. Louis to Chicago

Oct 18 - Oct 25
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

28h 13m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

24h 54m
$151

Spirit Airlines

Pick Dates

Deal found 9/22/22

Oct 7 - Oct 11
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

27h 21m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

24h 54m
$177

Spirit Airlines

Pick Dates

Deal found 9/19/22

Nov 1 - Nov 3
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

13h 49m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

17h 23m
$178

Spirit Airlines

Pick Dates

Deal found 9/20/22

Cheap Frontier flights from St. Louis to Chicago

Sep 27 - Oct 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

9h 30m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

11h 20m
$164

Frontier

Pick Dates

Deal found 9/21/22

Sep 27 - Sep 28
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

9h 30m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

15h 01m
$168

Frontier

Pick Dates

Deal found 9/21/22

Oct 4 - Oct 25
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

9h 30m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

11h 20m
$188

Frontier

Pick Dates

Deal found 9/20/22

Non-stop flights to Chicago from St. Louis

Save time with St. Louis to Chicago direct flight deals
Oct 5 - Oct 5
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 18m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 12m
$156

American Airlines

Pick Dates

Deal found 9/21/22

Nov 7 - Nov 8
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 29m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 25m
$166

United Airlines

Pick Dates

Deal found 9/20/22

Oct 27 - Oct 27
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 17m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 29m
$176

American Airlines

Pick Dates

Deal found 9/19/22

Last minute flights from St. Louis to Chicago

Late deals on return flights to Chicago from St. Louis, departing today and this week
Sep 27 - Oct 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

9h 30m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

11h 20m
$164

Frontier

Pick Dates

Deal found 9/21/22

Sep 27 - Sep 28
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

9h 30m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

15h 01m
$168

Frontier

Pick Dates

Deal found 9/21/22

Sep 27 - Oct 4
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

22h 32m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

2 stops

28h 34m
$180

Spirit Airlines

Pick Dates

Deal found 9/21/22

One-way flights to Chicago from St. Louis

The cheapest one-way flights from St. Louis to Chicago
Oct 25
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

28h 13m
$62

Spirit Airlines

Pick Dates

Deal found 9/22/22

Oct 31
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

14h 16m
$76

Frontier

Pick Dates

Deal found 9/21/22

Oct 25
STL

Lambert-St Louis

MDW

Chicago Midway

1 stop

6h 57m
$77

Multiple Airlines

Pick Dates

Deal found 9/21/22

Related info for your journey

Useful info, stats and facts about St. Louis to Chicago flights.

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 38 flights from Lambert-St Louis to Chicago per day from 9 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 Train. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

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 Spirit Airlines for just $151, but on average you can expect to pay $175.

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 $228.

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: Sunday, Monday, Thursday, Friday, Saturday.

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

Per day, 8 flights depart from St. Louis to Chicago on average.
Morning (6am - Noon) - 38% of flight departures
Afternoon (Noon - 6pm) - 63% of flight departures

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

Departing from St. Louis to Chicago will take you 1h 18m. The distance between St. Louis and Chicago 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 St. Louis to Chicago round-trip?

Cheapflights users have booked flights from St. Louis to Chicago round-trip from $151. Other airlines that can offer you cheap pricing are American Airlines, from $156, and United Airlines, from $166. These flights start at 36% lower than the current average price 3 months from now.

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

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $62. Frontier flights start at $76 while deals on United Airlines start at $78 one-way.

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

The most popular airlines flying from St. Louis to Chicago are Train, Bus and Air Choice One. Something to consider prior to booking your flight.

What are the most reliable airlines from St. Louis to Chicago?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Chicago on time: Republic Airways (100%), ANA (93%), GoJet (87%).

What are the cheapest flights from St. Louis to Chicago?

The cheapest flight price from St. Louis to Chicago is $120. On average you can expect to pay $333. The most popular route, (Lambert-St Louis - Chicago O'Hare Intl), can usually be booked for $175.

Alternative routes for St. Louis to Chicago

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

Top 3 airlines flying from 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.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Air Choice OneCheapest$70Average$71FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Air Choice One flights
United AirlinesCheapest$110Average$239FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
American AirlinesCheapest$120Average$278FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights

Hourly flight availability from St. Louis to Chicago

See what time of day planes typically take off from St. Louis to Chicago
17%of flight departuresEarly morningMidnight to 6 am
42%of flight departuresMorning6 am to noon
39%of flight departuresAfternoonNoon to 6 pm
2%of flight departuresEvening6 pm to midnight
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
Sunday36daily flights
Monday35daily flights
Tuesday38daily flights
Wednesday56daily flights
Thursday53daily flights
Friday35daily flights
Saturday19daily flights