Chicago, IL CHI to St. Louis, MO STL flight with American Airlines

Tue, Mar 10
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Journey information

Overview: Chicago, IL to St. Louis, MO flight

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Icon of flight

Flights from Chicago, IL to St. Louis, MO depart on average 19 times per day, taking around 1h 21m. Cheap flight tickets for this journey start at $95 (€77) but you can travel from only $30 (€24) by train.

There are 6 flights per day. The earliest flight runs at 00:15, the last at 23:55. The fastest flight covers the 260 miles (419 km) distance in 1h 21m. April is the cheapest month to fly.

Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Cheapest alternative travel mode
Train from $30 (€24)
Distance
260 miles (419 km)
Average flight duration
1h 21m
Cheapest ticket price
$95 (€77)
Flights per day
19
Direct flights
6
Fastest flight
1h 21m
Cheapest month
April
First flight
00:15
Last flight
23:55
Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Cheapest alternative travel mode
Train from $30 (€24)

The cheapest and fastest flights from Chicago, IL to St. Louis, MO

Showing times and prices for Mar 11

Cheapest price

$488

Average price

$813

Fastest journey

1 h 14 m

Average duration

1 h 19 m

Flights per day

44

Distance

419 km

Cheap tickets

The best way to find a cheap flight ticket from Chicago, IL to St. Louis, MO is to book your journey as far in advance as possible and to avoid traveling at rush hour.

The average ticket from Chicago, IL to St. Louis, MO will cost around $813 if you buy it on the day, but the cheapest tickets can be found for only $488.

Fast flights

Of the 44 flights that leave Chicago, IL for St. Louis, MO onWed, Mar 11, 16 travel direct so it’s quite easy to avoid journeys where you’ll have to change along the way.

On Wed, Mar 11 the direct flights cover the 419 km distance in an average of 1 h 19 m but if you time it right, some flights will get you there in just 1 h 14 m .

On Wed, Mar 11 the longest flights will take 1 h 23 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.

American AirlinesAA1926
10:30PM1h14
O'Hare International Airport
11:44PMSt. Louis Lambert International Airport
$4881One-way
0 transfers
American AirlinesAA2304
12:24PM1h15
O'Hare International Airport
01:39PMSt. Louis Lambert International Airport
$4881One-way
0 transfers
Republic AirlinesAA4460
07:20AM1h31
O'Hare International Airport
08:51AMSt. Louis Lambert International Airport
$4881One-way
0 transfers
envoy airAA3712
08:40AM1h23
O'Hare International Airport
10:03AMSt. Louis Lambert International Airport
$4881One-way
0 transfers
envoy airAA3573
07:46PM1h25
O'Hare International Airport
09:11PMSt. Louis Lambert International Airport
$4881One-way
0 transfers

Travel Information

Compare train, bus, and flight for Chicago, IL to St. Louis, MO

Omio recommends booking the train as it is the most popular option from Chicago, IL to St. Louis, MO among Omio's users. If you are prioritising price take the train with prices starting from $30. For those with little time consider booking a flight which can get you there in 1h 21m. In case you are seeking to minimise your carbon footprint the train is your best bet as it emits only 0.1 - 0.4kg. The ticket price range depends on the travel mode: a train costs an average of $30, and a flight costs an average of $95.

Distance: 260 miles (419 km)

Compare flight with

Flight
Most popular
Train
Bus

$375

Average price

$62

Average price

Cheapest

$71

Average price

4h 21m

Average total duration

Fastest

1h 21m

Onboard

+

3h 0m

Additional time*

5h 29m

Average total duration

4h 59m

Onboard

+

30m

Additional time*

6h 57m

Average total duration

6h 27m

Onboard

+

30m

Additional time*

1.3 - 2.5kg

CO2 emissions

0.1 - 0.4kg

CO2 emissions

Lowest

0.4 - 1.0kg

CO2 emissions

American Airlines

Most popular airline

Amtrak

Most popular train company

Greyhound

Most popular bus company

Direct Options

Direct Options

Direct Options

Additional time: Average total travel duration to departure point, security checks and transfers.

Live departures

Chicago, IL to St. Louis, MO flight times

The table below shows live departures for Chicago, IL to St. Louis, MO flights for today, Tuesday, March 10. You can also manually refresh the results below to see updated flight journeys.

Last updated at 8:49 AM
ProviderDepartsDurationArrivesTransfers
Tickets
unitedUA2118 · UA65212:00 PM O'Hare International Airport
6h19
6:19 PM St. Louis Lambert International Airport1 transfer
unitedUA2249 · UA554 · UA371912:15 PM O'Hare International Airport
9h45
10:00 PM St. Louis Lambert International Airport2 transfers
republic_airlinesAA446012:20 PM O'Hare International Airport
1h31
1:51 PM St. Louis Lambert International Airport0 transfersDirect
unitedUA1231 · UA613212:35 PM O'Hare International Airport
8h30
9:05 PM St. Louis Lambert International Airport1 transfer
envoy_airAA37121:06 PM O'Hare International Airport
1h23
2:29 PM St. Louis Lambert International Airport0 transfersDirect
unitedUA1357 · UA4187 · UA37191:50 PM O'Hare International Airport
8h10
10:00 PM St. Louis Lambert International Airport2 transfers
unitedUA2225 · UA61321:53 PM O'Hare International Airport
7h12
9:05 PM St. Louis Lambert International Airport1 transfer
unitedUA2301 · UA1992 · UA45272:15 PM O'Hare International Airport
9h58
12:13 AM St. Louis Lambert International Airport2 transfers
unitedUA2301 · UA37192:15 PM O'Hare International Airport
7h45
10:00 PM St. Louis Lambert International Airport1 transfer
unitedUA3454 · UA3688 · UA45273:00 PM O'Hare International Airport
9h13
12:13 AM St. Louis Lambert International Airport2 transfers
unitedUA2605 · UA1831 · UA45273:35 PM O'Hare International Airport
8h38
12:13 AM St. Louis Lambert International Airport2 transfers
unitedUA2605 · UA1831 · UA36383:35 PM O'Hare International Airport
13h16
4:51 AM St. Louis Lambert International Airport2 transfers
unitedUA2605 · UA555 · UA36383:35 PM O'Hare International Airport
13h16
4:51 AM St. Louis Lambert International Airport2 transfers
unitedUA5756 · UA6190 · UA45273:37 PM O'Hare International Airport
8h36
12:13 AM St. Louis Lambert International Airport2 transfers
unitedUA1856 · UA1992 · UA45273:50 PM O'Hare International Airport
8h23
12:13 AM St. Louis Lambert International Airport2 transfers
unitedUA1856 · UA37193:50 PM O'Hare International Airport
6h10
10:00 PM St. Louis Lambert International Airport1 transfer
unitedUA44913:56 PM O'Hare International Airport
1h31
5:27 PM St. Louis Lambert International Airport0 transfersDirect
unitedUA2629 · UA3688 · UA45274:05 PM O'Hare International Airport
8h08
12:13 AM St. Louis Lambert International Airport2 transfers
unitedUA1448 · UA16635:45 PM O'Hare International Airport
9h31
3:16 AM St. Louis Lambert International Airport1 transfer
envoy_airAA38685:47 PM O'Hare International Airport
1h20
7:07 PM St. Louis Lambert International Airport0 transfersDirect
unitedUA1113 · UA14225:50 PM O'Hare International Airport
7h51
1:41 AM St. Louis Lambert International Airport1 transfer
unitedUA2290 · UA1609 · UA16635:57 PM O'Hare International Airport
9h19
3:16 AM St. Louis Lambert International Airport2 transfers
unitedUA293 · UA1831 · UA36386:06 PM O'Hare International Airport
10h45
4:51 AM St. Louis Lambert International Airport2 transfers
unitedUA293 · UA45276:06 PM O'Hare International Airport
6h07
12:13 AM St. Louis Lambert International Airport1 transfer
unitedUA55086:18 PM O'Hare International Airport
1h31
7:49 PM St. Louis Lambert International Airport0 transfersDirect
unitedUA270 · UA14227:01 PM O'Hare International Airport
6h40
1:41 AM St. Louis Lambert International Airport1 transfer
unitedUA1215 · UA16637:10 PM O'Hare International Airport
8h06
3:16 AM St. Louis Lambert International Airport1 transfer
unitedUA1892 · UA36387:35 PM O'Hare International Airport
9h16
4:51 AM St. Louis Lambert International Airport1 transfer
unitedUA2347 · UA14227:45 PM O'Hare International Airport
5h56
1:41 AM St. Louis Lambert International Airport1 transfer
unitedUA44607:54 PM O'Hare International Airport
1h29
9:23 PM St. Louis Lambert International Airport0 transfersDirect
unitedUA2184 · UA36388:40 PM O'Hare International Airport
8h11
4:51 AM St. Louis Lambert International Airport1 transfer
unitedUA714 · UA16639:00 PM O'Hare International Airport
6h16
3:16 AM St. Louis Lambert International Airport1 transfer
unitedUA2649 · UA47489:05 PM O'Hare International Airport
7h29
4:34 AM St. Louis Lambert International Airport1 transfer
unitedUA1630 · UA36389:30 PM O'Hare International Airport
7h21
4:51 AM St. Louis Lambert International Airport1 transfer
unitedUA60179:35 PM O'Hare International Airport
1h25
11:00 PM St. Louis Lambert International Airport0 transfersDirect
skywest_airlinesAA62359:36 PM O'Hare International Airport
1h22
10:58 PM St. Louis Lambert International Airport0 transfersDirect
unitedUA441610:50 PM O'Hare International Airport
1h24
12:14 AM St. Louis Lambert International Airport0 transfersDirect
Wednesday, March 11
united12:15 AM Chicago, IL
15h53
4:08 PM St. Louis, MO0 transfersDirect
unitedUA68412:42 AM O'Hare International Airport
1h25
2:07 AM St. Louis Lambert International Airport0 transfersDirect
envoy_airAA357312:46 AM O'Hare International Airport
1h25
2:11 AM St. Louis Lambert International Airport0 transfersDirect
unitedUA45762:33 AM O'Hare International Airport
1h26
3:59 AM St. Louis Lambert International Airport0 transfersDirect
american_airlinesAA19263:30 AM O'Hare International Airport
1h14
4:44 AM St. Louis Lambert International Airport0 transfersDirect

This is the last flight of the day.

Find all the dates and times for this journey

How far in advance should I book flight tickets from Chicago, IL to St. Louis, MO?

The best time to book your flight from Chicago, IL to St. Louis, MO is 49 days before departure. See how prices for flights change on the Chicago, IL to St. Louis, MO route.
Prices are for one-way tickets for one passenger from Chicago, IL to St. Louis, MO per month. Insights are sourced from fares found by Omio users in the last 12 months. Current prices may differ as prices vary depending on the time of day, class or how far in advance you book your flight from Chicago, IL to St. Louis, MO.

Compare prices and tickets Chicago, IL to St. Louis, MO by train, bus, or flight

Compare train, bus, and flight prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.

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Why should you book Chicago, IL to St. Louis, MO flights with Omio?

American Airlines as well as United or Republic Airlines offer flights services from Chicago, IL to St. Louis, MO.
Omio is an official ticket reseller for all your travel options from Chicago, IL to St. Louis, MO.

Why book with Omio vs American Airlines?

  • Compare with other providers: On Omio, you can not only buy tickets for American Airlines, but also compare tickets for the likes of United or Republic Airlines to find the best option for your trip from Chicago, IL to St. Louis, MO.
  • Designed for International Travelers: Omio is in your language including 24/7 customer service and offers multiple payment options, including PayPal, credit cards, and bank transfer, in your preferred currency.
  • Compare all your options: Omio allows you to compare American Airlines with all available travel options, which are train, bus and flight to ensure you get the best deal for traveling from Chicago, IL to St. Louis, MO.

Why book with Omio over Trip, Edreams or Skyscanner?

  • Compare with other providers: On Omio, you can also compare tickets for the likes of United or Republic Airlines to find the best option for your trip from Chicago, IL to St. Louis, MO.
  • Multiple modes of transport: Omio allows you to compare travel options including train, bus and flight to find the ideal travel option from Chicago, IL to St. Louis, MO.

Airlines: American Airlines, United, Republic Airlines from Chicago, IL to St. Louis, MOFind the best flights between Chicago, IL to St. Louis, MO with Omio's travel partners American Airlines, United, Republic Airlines from $30 (€24). We can find you the best deals, schedules and tickets when comparing and booking the best trip.

United

About
United Airlines, established in 1926, is a major U.S. airline headquartered in Chicago, Illinois. Operating an extensive domestic and international network, United serves more destinations than any other airline, connecting travelers across six continents. The airline's eight hubs include Chicago–O'Hare, Denver, Houston–Intercontinental, Los Angeles, Newark, San Francisco, Washington–Dulles, and Guam. As a founding member of the Star Alliance, United offers a comprehensive range of services, including regional flights through United Express, catering to both leisure and business travelers. The airline is committed to sustainability, investing in sustainable aviation fuel and innovative technologies to reduce its environmental impact.
Luggage & cancellation policy
Average Duration
1h 23m
Cheapest Price
$322 (€260)
United frequency
31 a day
Luggage included
Carry-on baggage allowance is 7kg total (2 pieces max. ) for both Choice and Flex fares on United Airlines and Virgin Australia flights.
Additional luggage
Excess baggage fees apply for additional checked luggage beyond the standard allowance.
Luggage storage
Both airlines provide checked baggage services for storing luggage during flights.
Cancellation Policy
Cancellation fees apply per person, per booking, with specific fees for different fare types.
Refund
Not applicable to flights; however, full refunds are available if flights are canceled by the airline.
Pregnant on board
Pregnant passengers are permitted to travel, with specific guidelines and medical certificates required after a certain gestational period.
Unaccompagned minor
Unaccompanied minors are permitted to travel, with specific age restrictions and services provided.
Amenities on board the airplane
Wifi
Food sold onboard
Meals and snacks are included on international flights operated by United Airlines and Virgin Australia.
Seat reservation
Seat selection may incur additional fees, depending on the fare type and airline.
Toilets
USB plugs
Accessibility
United Airlines and Virgin Australia offer services to and within Australia, providing accessible travel options for passengers with mobility needs.
Bikes
Both airlines permit bicycles onboard, with specific guidelines and fees.
Pets
United Airlines and Virgin Australia allow pets onboard, subject to specific policies and fees.

American Airlines

About
American Airlines is one of the largest airlines in the world, connecting travelers to hundreds of destinations across the United States, Latin America, Europe, Asia, and beyond. Operating from major hubs such as Dallas/Fort Worth, Miami, and Charlotte, American offers a wide range of travel options. Passengers can choose from Economy with affordable fares, Premium Economy with extra space, or Business and First Class featuring flat-bed seats, premium dining, and lounge access. With a modern fleet and membership in the oneworld alliance, American Airlines combines global reach with comfort and reliability.
Luggage & cancellation policy
Average Duration
1h 21m
Cheapest Price
$95 (€77)
American Airlines frequency
2 a day
Luggage included
1 carry-on bag (22 x 14 x 9 inches) and 1 personal item (18 x 14 x 8 inches) included in most fares
Additional luggage
Checked bags fees vary by route. First checked bag typically $30, second $40 on domestic flights
Cancellation Policy
Basic Economy tickets cannot be changed or refunded. Other fares allow changes with fee, refunds subject to fare rules.
Pregnant on board
Passengers can fly up to 36 weeks for single pregnancies, 32 weeks for multiple pregnancies. Medical certificate required within 7 days of departure if within 4 weeks of due date.
Unaccompagned minor
Children ages 5-14 can travel alone using American Airlines Unaccompanied Minor Service. Service fee is $150 each way.
Amenities on board the airplane
Wifi
Food sold onboard
USB plugs
Accessibility
American Airlines provides wheelchair assistance and special services for passengers with disabilities. Assistance must be requested at least 48 hours before departure.
Pets
Small dogs and cats allowed in cabin for $125 fee. Must be in approved carrier under seat. Service animals allowed.

Republic Airlines

About
Republic Airways is a major regional airline in the United States, operating as a subsidiary of Republic Airways Holdings. It provides scheduled passenger service for American Airlines (as American Eagle), Delta Air Lines (as Delta Connection), and United Airlines (as United Express) using a fleet of Embraer 170 and 175 regional jets. Headquartered in Indianapolis, Indiana, Republic Airways operates over 900 daily flights to more than 80 cities across the U.S. and Canada. The company is known for its large fleet of Embraer E-Jets and its state-of-the-art training facilities. In April 2025, Republic Airways Holdings announced its acquisition of Mesa Air Group, which is expected to create the second-largest regional carrier in the U.S.
Luggage & cancellation policy
Average Duration
1h 20m
Cheapest Price
$308 (€249)
Republic Airlines frequency
2 a day
Luggage included
One carry-on bag (24 x 16 x 10) and one personal item
Additional luggage
Checked bags for a fee
Cancellation Policy
Tickets are non-refundable but may be cancelled for future flight credit minus applicable fees
Pregnant on board
Passengers can fly up to the end of their 36th week for single pregnancies and the end of their 32nd week for multiple pregnancies
Unaccompagned minor
Unaccompanied minor service is available for children ages 5-14. Must be booked directly with Republic Airlines
Amenities on board the airplane
USB plugs
Accessibility
Republic Airlines offers assistance for passengers with reduced mobility, including wheelchair services and priority boarding. Passengers are advised to request these services in advance to ensure availability and proper arrangements.

FAQs: Chicago, IL to St. Louis, MO Flight

Find answers to the most common questions about traveling from Chicago, IL to St. Louis, MO by flight. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest flight, the cheapest option, or tips for making the most of your visit at St. Louis, MO, this guide helps you travel smarter and with confidence.

FAQs
Cheap plane tickets from Chicago, IL to St. Louis, MO can start from as little as $95 (€77) when you book in advance. The average flight ticket price for Chicago, IL to St. Louis, MO is $375 (€303) ; however, prices vary depending on the time of day and class and they tend to be more expensive on the day.
The average journey time by plane from Chicago, IL to St. Louis, MO is 1h 21m to travel the 260 miles (419 km) long route. Journey times can vary on weekends and holidays, so use our Journey Planner to search for a specific date.
The earliest flight from Chicago, IL to St. Louis, MO leaves at 12:15 AM. Plan your trip with the Journey Planner from Omio.
The latest flight from Chicago, IL to St. Louis, MO leaves at 11:55 PM.
Yes, there are 6 direct flights a day from Chicago, IL to St. Louis, MO with American Airlines, United, Republic Airlines. Schedules can vary on holidays or weekends with fewer direct flights.
When taking a flight from Chicago, IL to St. Louis, MO, you can count on American Airlines, United, Republic Airlines for the best way to get you to St. Louis, MO. You can also check all possible airlines who offer a service between Chicago, IL and St. Louis, MO and compare the amenities they offer before buying a plane ticket.
Flights from Chicago, IL to St. Louis, MO generally leave from O'Hare International Airport and arrive in St. Louis Lambert International Airport.O'Hare International Airport is 1 miles (3 km) away from Chicago, IL city centre and St. Louis Lambert International Airport is 1 miles (2 km) from St. Louis, MO city centre.
The cheapest month for a flight from Chicago, IL to St. Louis, MO is April.
It's helpful to compare your options as there are 3 ways to travel between Chicago, IL and St. Louis, MO including taking a train, bus, and flight.
Since neither Chicago, IL nor St. Louis, MO are in the Schengen Area, passport requirements depend on the specific immigration rules of United States and United States. Entry and visa requirements can be subject to change. For the latest information, check with your destination's embassy or consulate.
There is no time difference between Chicago, IL and St. Louis, MO.
The best events to attend in St. Louis, MO include:
  • St. Louis Mardi Gras, a vibrant celebration featuring parades, live music, and festive activities in the Soulard neighborhood
  • St. Louis Art Fair, an annual event showcasing local and national artists with art exhibits, live performances, and culinary delights
  • Fair St. Louis, a multi-day Independence Day festival with fireworks, concerts, and family-friendly activities along the Gateway Arch.
The best holidays to experience in St. Louis, MO include:
  • Independence Day, vibrant fireworks and festive celebrations throughout the city
  • Labor Day, pleasant weather and various outdoor activities
  • Thanksgiving, a time for family gatherings with a charming autumn atmosphere.
The best season to visit St. Louis, MO is Spring or Fall. The best weather to explore St. Louis, MO is during April-May or September-October.
For domestic flights we recommend to arrive 1.5 to 2 hours before departure. Please check the website of your departure airport if in doubt. Some airports may offer booking time slots for security checks or offer additional information on when to get there based on time of day.
Most airlines permit carry-on bags that fit within specific dimensions (e.g., 22 x 14 x 9 inches or 56 x 36 x 23 cm), including handles and wheels. Bags must fit in the overhead bin or under the seat in front of you.
Many airlines impose weight limits, commonly ranging between 7 kg (15 lbs) and 12 kg (26 lbs). Typically, passengers are allowed one carry-on bag and one personal item (for example a purse, laptop bag, or backpack). Personal items must fit under the seat in front of you. Budget Airlines (like Ryanair or Wizz Air) have stricter size and weight limits, often requiring fees for larger carry-ons. Full-Service Airlines have more lenient policies, sometimes including more spacious dimensions or higher weight limits depending on your ticket class.
The list of items prohibited on an airplane varies by country and airline, but in general, the following items are not allowed in carry-on or checked baggage: Weapons and self-defence items, sharp objects, flammable materials, explosives, toxic substances, or liquids over 100ml (except for medications and baby essentials). In checked baggage, firearms (without authorization), explosives, large lithium batteries, and hazardous chemicals are prohibited. Electronic cigarettes must be in carry-on bags, while alcohol and dry ice have restrictions. Always check with your airline for specific regulations.

popular airports

Popular airports from Chicago, IL to St. Louis, MO

Chicago
St. Louis
The major airport for departures in Chicago is O'Hare International Airport. Find all the information you need to know about services, amenities and connections at O'Hare International Airport for your trip from Chicago to St. Louis.
Amenities at airport
WifiWifi
ShoppingShopping
ParkingParking
DiningDining
ATMATM
TaxisTaxis
AccessibilityAccessibility
WCWC
HotelHotel
ShowerShower
LoungeLounge
Lost and Found OfficeLost and Found Office
Car RentalCar Rental
information
ticketOfficeHours
Distance to city center
3 km
carConnection
Car connection
I-190, Exit 1
Wifi
Wifi
  • Free Wi-Fi available throughout the airport.
Shopping
Shopping
  • Shops are located in all terminals, including duty-free and brands like Hudson and MAC Cosmetics.
Parking
Parking
  • Parking available with options including hourly, daily, and economy lots, approximately 2.85€ ($3) per hour.
Dining
Dining
  • Restaurants are located in all terminals, offering a variety of cuisines including American and intertiol. Top options include Tortas Frontera and Publican Tavern.
Taxis
Taxis
  • Available outside the terminal.
Accessibility
Accessibility
  • Elevators, ramps, toilets
WC
WC
  • Available throughout the airport.
Hotel
Hotel
  • Hotels such as Hilton Chicago O'Hare are located on airport grounds, with others like the Hyatt Regency nearby.
Shower
Shower
  • Showers are available in some lounges, such as the United Club, but access may require a fee or membership.
Lounge
Lounge
  • Lounges available, including United Club and American Airlines Admirals Club.
Lost and Found Office
Lost and Found Office
  • Lost and Found located in terminal 1, near the baggage claim area.
Car Rental
Car Rental
  • Car rental services are available at the Multi-Modal Facility, with companies like Hertz and Avis.
Public transit options for O'Hare International Airport
  • CTA Blue Line, O'Hare Station, 45 minutes to city center

Most popular flights to and from St. Louis, MO and Chicago, IL

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