Chicago

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

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 to Chicago

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

$156 - $284

CHI

Temperature

23 - 73.4 °F

CHI

Precipitation

1.7 - 4.9 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 (CHI)

One-way from

$49

One-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 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 January, February 2022

The best prices found for STL to CHI flights for January, February
Feb 15 - Feb 16
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 28m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 24m
$78

United Airlines

View Deal

Deal found 1/24/22

Feb 18 - Feb 21
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 23m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 31m
$88

United Airlines

View Deal

Deal found 1/25/22

Feb 11 - Feb 13
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 28m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 31m
$98

United Airlines

View Deal

Deal found 1/24/22

St. Louis to Chicago 2022 flight deals

Cheap flights to Chicago from St. Louis found for this year
Feb 15 - Feb 16
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 28m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 24m
$78

United Airlines

View Deal

Deal found 1/24/22

Feb 18 - Feb 21
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 23m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 31m
$88

United Airlines

View Deal

Deal found 1/25/22

Mar 17 - Mar 22
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 27m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 23m
$91

United Airlines

View Deal

Deal found 1/25/22

Non-stop flights to Chicago from St. Louis

Save time with St. Louis to Chicago direct flight deals
Feb 15 - Feb 16
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 28m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 24m
$78

United Airlines

View Deal

Deal found 1/24/22

Feb 18 - Feb 21
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 23m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 31m
$88

United Airlines

View Deal

Deal found 1/25/22

Mar 17 - Mar 22
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 27m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

Nonstop

1h 23m
$91

United Airlines

View Deal

Deal found 1/25/22

Last minute flights from St. Louis to Chicago

Late deals on return flights to Chicago from St. Louis, departing today and this week
Feb 3 - Feb 9
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

27h 08m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

16h 25m
$125

Spirit Airlines

View Deal

Deal found 1/23/22

Feb 4 - Feb 6
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

24h 43m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

16h 54m
$132

Spirit Airlines

View Deal

Deal found 1/24/22

Jan 31 - Feb 3
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

16h 04m
ORD

Chicago O'Hare Intl

STL

Lambert-St Louis

1 stop

27h 57m
$134

Spirit Airlines

View Deal

Deal found 1/22/22

One-way flights to Chicago All airports from St. Louis

The cheapest one-way flights from St. Louis to Chicago
Feb 15
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 28m
$39

United Airlines

View Deal

Deal found 1/24/22

Apr 22
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

Nonstop

1h 27m
$49

United Airlines

View Deal

Deal found 1/25/22

Feb 2
STL

Lambert-St Louis

ORD

Chicago O'Hare Intl

1 stop

8h 39m
$54

Spirit Airlines

View Deal

Deal found 1/24/22

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 33 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.

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 United Airlines for just $78, but on average you can expect to pay $120.

Are there nonstop flights from St. Louis to Chicago for under $100 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Chicago under $100. A good price for a nonstop flight from St. Louis to Chicago is less than $191.

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: Wednesday, Saturday.

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

Per day, 6 flights depart from St. Louis to Chicago on average.
Morning (6am - Noon) - 17% of flight departures
Afternoon (Noon - 6pm) - 83% of flight departures

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

Departing from St. Louis to Chicago will take you 1h 28m. 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 $78. Another airline that can offer you cheap pricing is Spirit Airlines. These flights start at 65% 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 United Airlines, which is currently one of the cheapest options available, starting at $39. Spirit Airlines flights start at $54 while deals on Frontier start at $94 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 Major Airline. 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: Cathay Pacific (100%), Republic Airways (97%), Austrian Airlines (96%).

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

The cheapest flight price from St. Louis to Chicago is $36. On average you can expect to pay $226. The most popular route, (Lambert-St Louis - Chicago O'Hare Intl), can usually be booked for $114.

Can I fly to Chicago from Lambert-St Louis right now?

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 24 hours before departing to Chicago.

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

Can I fly back to Lambert-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 24 hours before departing to Lambert-St Louis.

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

Alternative routes for St. Louis to Chicago

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

Top 5 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
Cape Air
Cheapest$73
Average$154
FlexibilityNo cancel fee
On-time63%
COVID-19 safety
United Airlines
Cheapest$131
Average$296
FlexibilityNo cancel fee
On-time69%
COVID-19 safety
American Airlines
Cheapest$147
Average$310
FlexibilityNo cancel fee
On-time71%
COVID-19 safety
Delta
Cheapest$158
Average$402
FlexibilityNo cancel fee
On-timeN/A
COVID-19 safety
Linear Air Taxi
Cheapest$2,484
Average$5,165
FlexibilityNo cancel fee
On-timeN/A
COVID-19 safety

Hourly flight availability from St. Louis to Chicago

See what time of day planes typically take off from St. Louis to Chicago
9%of flight departuresEarly morningMidnight to 6 am
48%of flight departuresMorning6 am to noon
42%of flight departuresAfternoonNoon to 6 pm
1%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
Sunday26daily flights
Monday42daily flights
Tuesday42daily flights
Wednesday43daily flights
Thursday32daily flights
Friday32daily flights
Saturday14daily flights