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

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The best prices from Lambert-St Louis Intl 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
Lambert-St Louis Intl (STL) to Chicago (CHI)

All the information you need to plan the best STL to CHI flight in 2021: compare Lambert-St Louis Intl 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
Rainfall
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 Intl to Chicago

One-way from

$114

One-way flight from Lambert-St Louis Intl 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 Lambert-St Louis Intl to Chicago?

Users have found that flying from Lambert-St Louis Intl to Chicago on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Lambert-St Louis Intl to Chicago?

Travelers have found it’s best to book a flight 20 days in advance to save up to 10% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 20 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Lambert-St Louis Intl to Chicago 1-2 weeks in advance for as low as $137, or $157 for flights within the next 24 hours.

What is the cheapest month to fly from Lambert-St Louis Intl to Chicago?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to Chicago. Flights to Chicago from Lambert-St Louis Intl in April are about $135 on average during April, but can be found for as low as $33.

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

Unlike in the afternoon, when flights are generally more expensive, you can save up to 11% on flights from Lambert-St Louis Intl to Chicago by exploring options for tickets in the morning.

Cheap flights from Lambert-St Louis Intl to Chicago in May, June 2021

The best prices found for STL to CHI flights for May, June
11 Jun - 11 Jun
$117pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis
12 Jun - 14 Jun
$118pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis
11 Jun - 12 Jun
$119pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis

Lambert-St Louis Intl to Chicago 2021 flight deals

Cheap flights to Chicago from Lambert-St Louis Intl found for this year
11 Jun - 11 Jun
$117pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis
12 Jun - 14 Jun
$118pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis
11 Jun - 12 Jun
$119pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis

Non-stop flights to Chicago from Lambert-St Louis Intl

Save time with Lambert-St Louis Intl to Chicago direct flight deals
11 Jun - 11 Jun
$117pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis
12 Jun - 14 Jun
$118pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis
11 Jun - 12 Jun
$119pp
STL
Lambert-St Louis
Frontier
Non-Stop
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Frontier
Non-Stop
STL
Lambert-St Louis

Last minute flights from Lambert-St Louis Intl to Chicago

Late deals on round-trip flights to Chicago from Lambert-St Louis Intl, departing today and this week
27 May - 28 May
$170pp
STL
Lambert-St Louis
Air Choice One
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
Air Choice One
 
1 STOP
STL
Lambert-St Louis
27 May - 31 May
$209pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
United Airlines
Non-Stop
STL
Lambert-St Louis
27 May - 31 May
$210pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
ORD
Chicago O'Hare Intl
ORD
Chicago O'Hare Intl
American Airlines
Non-Stop
STL
Lambert-St Louis

One-way flights to Chicago from Lambert-St Louis Intl

The cheapest one-way flights from Lambert-St Louis Intl to Chicago
6:50 pm - 7:43 pm
Frontier
1 Stop
24h 53m
STL - ORD
Frontier
$114
Kiwi.com
1:18 pm - 2:50 pm
United Airlines
Nonstop
1h 32m
STL - ORD
United Airlines
$119
United
8:30 am - 4:05 am
Air Choice One
1 Stop
19h 35m
STL - ORD
Air Choice One
$121
Kiwi.com

Related info for your journey

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

Flight FAQs

From Lambert-St Louis Intl to Chicago

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.

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.

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

Can I find flights from Lambert-St Louis Intl to Chicago for under $200 on Cheapflights?

Yes, there are multiple flights from Lambert-St Louis Intl to Chicago for under $200. The cheapest flight booked recently is on Frontier for just $117, but on average you can expect to pay $137.

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

Cheapflights has at least 20 direct flights from Lambert-St Louis Intl to Chicago under $200. A good price for a nonstop flight from Lambert-St Louis Intl to Chicago is less than $140.

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

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

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

You can find nonstop flights on the following days: Monday, Saturday.

How many flights depart from Lambert-St Louis Intl to Chicago on average per day?

Travelers can expect 6 flights from Lambert-St Louis to Chicago on average per day.
Morning (6am - Noon) - 83% of flight departures
Afternoon (Noon - 6pm) - 17% of flight departures

Is St Louis weather warmer or cooler than Chicago?

Temperatures around the 90 °F's can be experienced in July. The weather in Chicago is colder than in St Louis. Plan for potential changes in flight availability as peak weather approaches in this location.

How long is the flight from Lambert-St Louis Intl to Chicago?

A quick flight from Lambert-St Louis Intl to Chicago can take about 1h 17m. United Airlines provides one of the quickest options available for as low as $177. The distance between Lambert-St Louis Intl and Chicago is about 252 mi. Generally, flights for this route are nonstop.

What are the cheapest airlines flying from Lambert-St Louis Intl to Chicago round-trip?

Our cheapest airline available from Lambert-St Louis Intl to Chicago is Frontier. Our recent data shows that you can find tickets from as low as $117 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $133 and $151 round-trip. Frontier is 47% cheaper than the average price of flights available within the next 90 days to this destination.

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

$55 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from $67 and $74, respectively.

Alternative routes for Lambert-St Louis Intl 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 Lambert-St Louis Intl to Chicago.
Flight duration
1h 19m
Average temperature for May in Chicago
71.6 °F
Avg rainfall for May in Chicago
4.3 ″

Airports servicing St. Louis

Airports servicing Chicago

Chicago Midway (MDW)
Rockford (RFD)

Top 5 airlines flying from Lambert-St Louis Intl to Chicago

The chart below displays the airlines Cheapflights users traveling from Lambert-St Louis Intl 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 Lambert-St Louis Intl to Chicago

See what time of day planes typically take off from Lambert-St Louis Intl towards Chicago.
Morning 6 AM to noon 43% of STL to CHI departures
Afternoon Noon to 6 PM 29% of STL to CHI departures
Early morning Midnight to 6 AM 28% 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 Lambert-St Louis Intl to Chicago
See how many times per day planes take to the skies headed from Lambert-St Louis Intl to Chicago.
Sunday
49 daily flights
Monday
55 daily flights
Tuesday
43 daily flights
Wednesday
47 daily flights
Thursday
49 daily flights
Friday
57 daily flights
Saturday
38 daily flights
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