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Cheap flights from Chicago (CHI) to St. Louis (STL) from $46

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
CHI — STL
Apr 30 — May 71
From?
To?
Tue 4/30
Tue 5/7
1 adult, Economy
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The best prices from Chicago to Lambert-St Louis are usually found in September or January, booked 38 days in advance, depart on a Wednesday or Friday and return on a Wednesday

Cheap flight deals from Chicago to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 25, 2024.

Popular in

March

Cheapest in

September

Round-trip from

$323

One-way from

$89
High demand for flights, 21% potential price rise
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Best time to find cheap flights, 17% potential price drop
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From Chicago (CHI) to Lambert-St Louis
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One-way flight from Chicago (CHI) to Lambert-St Louis
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What is the cheapest day to fly round-trip from Chicago to St. Louis?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 41% on your flight compared to booking on days when demand is much higher.

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

To save on the cost of your flight from Chicago to St. Louis, book at least 39 days before your planned departure. Booking around this time can save you about 75% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $208 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $224.

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

September is one of the best times of the year to fly to St. Louis from Chicago. Prices for September average $270 per person but you can even find prices for as low as $128. The most expensive prices can be found in the month of March. Opting for a September flight can save you 26% on your journey compared to booking in March

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

Unlike in the evening, when flights are generally more expensive, you can save up to 31% on flights from Chicago to St. Louis by exploring options for tickets in the afternoon.

Cheap Delta flights from Chicago to St. Louis

Explore cheap flight options specifically provided by Delta for the route between Chicago and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 25, 2024.
Consider these cheap Delta flights we've found departing from Chicago to St. Louis. It's recommended that users confirm their flight details before booking.
Sat 5/255:00 pmMDW - STL
1 stop4h 52mDelta
Sun 5/266:11 amSTL - MDW
1 stop4h 51mDelta
Deal found 4/24$156
Sat 5/256:07 amORD - STL
1 stop5h 03mDelta
Sun 5/266:11 amSTL - ORD
2 stops6h 31mDelta
Deal found 4/24$161
Wed 5/229:32 amMDW - STL
1 stop3h 36mDelta
Wed 5/296:30 amSTL - MDW
1 stop6h 10mDelta
Deal found 4/24$180
Wed 5/229:32 amMDW - STL
1 stop3h 36mDelta
Wed 5/296:11 amSTL - MDW
2 stops6h 29mDelta
Deal found 4/24$185
Fri 5/316:48 pmMDW - STL
1 stop4h 52mDelta
Sun 6/29:59 amSTL - MDW
1 stop4h 56mDelta
Deal found 4/24$210
Fri 5/175:47 pmMDW - STL
1 stop3h 47mDelta
Sat 5/1812:00 pmSTL - MDW
1 stop4h 13mDelta
Deal found 4/24$241
Sun 6/25:47 pmMDW - STL
1 stop3h 47mDelta
Thu 6/66:30 amSTL - MDW
1 stop6h 10mDelta
Deal found 4/24$275
Wed 5/15:05 pmMDW - STL
1 stop4h 12mDelta
Tue 7/236:30 amSTL - MDW
1 stop6h 14mDelta
Deal found 4/24$333
Wed 5/19:30 amMDW - STL
1 stop3h 39mDelta
Tue 7/236:15 amSTL - MDW
2 stops6h 29mDelta
Deal found 4/24$338

Cheap United Airlines flights from Chicago to St. Louis

Explore cheap flight options specifically provided by United Airlines for the route between Chicago and St. Louis. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 25, 2024.
Have a look at some of the cheapest available United Airlines flights departing from Chicago and landing in St. Louis. Check back soon if you're not seeing flights that suit your needs.
Sat 5/252:20 pmORD - STL
Nonstop1h 21mUnited Airlines
Sun 5/265:31 pmSTL - ORD
Nonstop1h 24mUnited Airlines
Deal found 4/24$165
Wed 5/152:24 pmORD - STL
Nonstop1h 22mUnited Airlines
Thu 5/1611:10 amSTL - ORD
Nonstop1h 21mUnited Airlines
Deal found 4/24$212
Sat 5/188:50 amORD - STL
Nonstop1h 27mUnited Airlines
Sat 5/185:25 pmSTL - ORD
Nonstop1h 20mUnited Airlines
Deal found 4/24$237
Wed 5/1512:57 pmORD - STL
Nonstop1h 26mUnited Airlines
Thu 5/161:37 pmSTL - ORD
1 stop9h 24mUnited Airlines
Deal found 4/24$314
Thu 5/168:50 amORD - STL
Nonstop1h 24mUnited Airlines
Thu 5/165:25 pmSTL - ORD
Nonstop1h 20mUnited Airlines
Deal found 4/24$318
Sat 5/113:45 pmORD - STL
Nonstop1h 29mUnited Airlines
Thu 5/1611:10 amSTL - ORD
Nonstop1h 21mUnited Airlines
Deal found 4/24$329
Mon 5/62:24 pmORD - STL
Nonstop1h 22mUnited Airlines
Wed 5/810:10 amSTL - ORD
Nonstop1h 31mUnited Airlines
Deal found 4/23$401
Wed 5/158:50 amORD - STL
Nonstop1h 24mUnited Airlines
Thu 5/166:00 amSTL - ORD
Nonstop1h 31mUnited Airlines
Deal found 4/24$407
Tue 4/306:25 pmORD - STL
Nonstop1h 29mUnited Airlines
Thu 5/910:10 amSTL - ORD
Nonstop1h 31mUnited Airlines
Deal found 4/24$411

Cheap Chicago to St. Louis flights in April & May 2024

Find cheap flight options from Chicago to St. Louis specifically for the months of April and May 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,073,952 searches. Prices were last updated on April 25, 2024.
The lowest fares we've come across on flights traveling from Chicago to St. Louis in April and May 2024. For more flight deals, be sure to check back very soon.
Wed 5/229:50 amORD - STL
Nonstop1h 20mAmerican Airlines
Wed 5/295:55 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Deal found 4/24$97
Sat 5/253:05 pmORD - STL
Nonstop1h 12mAmerican Airlines
Sun 5/265:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 4/24$104
Wed 5/159:50 amORD - STL
Nonstop1h 20mAmerican Airlines
Fri 5/175:55 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Deal found 4/24$107
Wed 5/89:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Sat 5/1112:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 4/25$127
Tue 5/149:25 pmORD - STL
1 stop14h 20mSouthern / Mokulele
Thu 5/1612:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 4/24$128
Mon 5/138:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Thu 5/162:00 pmSTL - ORD
1 stop17h 40mSouthern / Mokulele
Deal found 4/24$129
Fri 5/38:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Sat 5/412:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 4/24$130
Tue 5/145:15 pmORD - STL
1 stop3h 05mMultiple Airlines
Tue 5/2110:34 amSTL - ORD
1 stop7h 06mMultiple Airlines
Deal found 4/25$134
Wed 5/89:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Tue 5/1412:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 4/24$136

Chicago to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Chicago and St. Louis in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 25, 2024.
The lowest fares we've come across on flights traveling from Chicago to St. Louis in April and May 2024. For more flight deals, be sure to check back very soon.
Wed 5/229:50 amORD - STL
Nonstop1h 20mAmerican Airlines
Wed 5/295:55 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Deal found 4/24$97
Sat 5/253:05 pmORD - STL
Nonstop1h 12mAmerican Airlines
Sun 5/265:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 4/24$104
Wed 5/159:50 amORD - STL
Nonstop1h 20mAmerican Airlines
Fri 5/175:55 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Deal found 4/24$107
Thu 9/262:15 pmORD - STL
Nonstop1h 17mAmerican Airlines
Sat 9/284:17 pmSTL - ORD
Nonstop1h 24mAmerican Airlines
Deal found 4/24$117
Wed 5/89:25 pmORD - STL
1 stop19h 20mSouthern / Mokulele
Sat 5/1112:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 4/25$127
Tue 5/149:25 pmORD - STL
1 stop14h 20mSouthern / Mokulele
Thu 5/1612:15 pmSTL - ORD
1 stop3h 35mSouthern / Mokulele
Deal found 4/24$128
Mon 5/138:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Thu 5/162:00 pmSTL - ORD
1 stop17h 40mSouthern / Mokulele
Deal found 4/24$129
Fri 5/38:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Sat 5/412:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 4/24$130
Tue 5/145:15 pmORD - STL
1 stop3h 05mMultiple Airlines
Tue 5/2110:34 amSTL - ORD
1 stop7h 06mMultiple Airlines
Deal found 4/25$134

Non-stop flights to St. Louis from Chicago

Discover non-stop flight options from Chicago to St. Louis. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 25, 2024.
For a quicker trip, book one of these direct flights from Chicago to St. Louis. Users seeking other options on flights from Chicago to St. Louis should update the search form at the top of the page.
Wed 5/229:50 amORD - STL
Nonstop1h 20mAmerican Airlines
Wed 5/295:55 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Deal found 4/24$97
Sat 5/253:05 pmORD - STL
Nonstop1h 12mAmerican Airlines
Sun 5/265:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 4/24$104
Wed 5/159:50 amORD - STL
Nonstop1h 20mAmerican Airlines
Fri 5/175:55 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Deal found 4/24$107
Thu 9/262:15 pmORD - STL
Nonstop1h 17mAmerican Airlines
Sat 9/284:17 pmSTL - ORD
Nonstop1h 24mAmerican Airlines
Deal found 4/24$117
Fri 5/1712:57 pmORD - STL
Nonstop1h 26mUnited Airlines
Sat 5/186:00 amSTL - ORD
Nonstop1h 31mUnited Airlines
Deal found 4/24$159
Sat 5/2512:52 pmORD - STL
Nonstop1h 24mUnited Airlines
Sun 5/268:05 amSTL - ORD
Nonstop1h 34mUnited Airlines
Deal found 4/24$164
Sat 5/252:20 pmORD - STL
Nonstop1h 21mUnited Airlines
Sun 5/265:31 pmSTL - ORD
Nonstop1h 24mUnited Airlines
Deal found 4/24$165
Fri 5/319:50 amORD - STL
Nonstop1h 20mAmerican Airlines
Fri 5/315:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 4/24$168
Tue 5/218:24 pmORD - STL
Nonstop1h 23mAmerican Airlines
Sat 5/257:45 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 4/24$171

Chicago to St. Louis flights leaving soon

Find last-minute flight options from Chicago to St. Louis for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 25, 2024.
Have a look at some of the flights available from Chicago to St. Louis departing last-minute. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Fri 5/38:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Sat 5/412:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 4/24$130
Wed 5/19:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Fri 5/32:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Deal found 4/24$136
Tue 4/305:15 pmORD - STL
1 stop3h 05mSouthern / Mokulele
Fri 5/312:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 4/23$137
Sat 5/45:15 pmORD - STL
1 stop13h 45mSouthern / Mokulele
Sun 5/512:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 4/24$141
Wed 5/19:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Fri 5/312:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 4/24$144
Wed 5/19:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Sat 5/412:00 pmSTL - ORD
1 stop19h 40mSouthern / Mokulele
Deal found 4/23$145
Sun 5/55:15 pmORD - STL
1 stop13h 45mSouthern / Mokulele
Fri 5/1012:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 4/24$155
Tue 4/305:15 pmORD - STL
1 stop19h 45mSouthern / Mokulele
Thu 5/912:00 pmSTL - ORD
1 stop4h 10mSouthern / Mokulele
Deal found 4/24$161
Wed 5/19:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Tue 7/234:45 pmSTL - ORD
1 stop14h 52mSouthern / Mokulele
Deal found 4/24$163

One-way flights to St. Louis from Chicago

Search for one-way flight options from Chicago to St. Louis. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 25, 2024.
Take a look at some of the best available options we've come across on one-way flights from Chicago to St. Louis. Users in need of a round-trip flight from Chicago to St. Louis instead should update the search form at the top of page.
Sun 5/262:20 pmORD - STL
Nonstop1h 21mUnited Airlines
Deal found 4/24$46
Wed 5/229:50 amORD - STL
Nonstop1h 20mAmerican Airlines
Deal found 4/24$49
Thu 5/163:04 pmORD - STL
Nonstop1h 13mAmerican Airlines
Deal found 4/25$59
Tue 5/2110:52 pmORD - STL
1 stop11h 54mSpirit Airlines
Deal found 4/24$61
Tue 5/217:00 amORD - STL
2 stops27h 46mSpirit Airlines
Deal found 4/24$62
Thu 5/98:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Deal found 4/24$69
Thu 5/28:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Deal found 4/24$70
Fri 5/108:15 amORD - STL
1 stop8h 30mSouthern / Mokulele
Deal found 4/24$71
Tue 5/217:00 amORD - STL
3 stops27h 46mSpirit Airlines
Deal found 4/24$72

Find flights from Chicago to St. Louis within your budget

Customize your flight search to find flights from Chicago to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$107 - $244

Route

Depart

Return

Price

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 5/15

Nonstop1h 20m

Lambert-St Louis

Fri 5/17

Nonstop1h 16m

$107

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 5/14

1 stop14h 20m

Lambert-St Louis

Thu 5/16

1 stop3h 35m

$128

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Mon 5/13

1 stop8h 30m

Lambert-St Louis

Thu 5/16

1 stop17h 40m

$129

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 5/15

1 stop4h 38m

Lambert-St Louis

Fri 5/17

Nonstop1h 16m

$140

Chicago MidwayLambert-St Louis

MDW - STL

MDWSTL

Chicago Midway

Sat 5/25

1 stop4h 52m

Lambert-St Louis

Sun 5/26

1 stop4h 51m

$156

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 5/14

3 stops27h 46m

Lambert-St Louis

Thu 5/16

1 stop4h 10m

$164

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 5/25

Nonstop1h 21m

Lambert-St Louis

Sun 5/26

Nonstop1h 24m

$165

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 5/8

2 stops24h 00m

Lambert-St Louis

Tue 5/14

2 stops19h 39m

$207

Chicago MidwayLambert-St Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 5/15

1 stop11h 14m

Lambert-St Louis

Thu 5/16

1 stop12h 49m

$244

Flights are sorted by cheapest first

Deals found on 4/24

When is the best time to book a flight from Chicago to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to St. Louis. Price data was last updated on January 28, 2024.
The price you pay for your flight from Chicago to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 38 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

When is the cheapest time to fly from Chicago to St. Louis?

Use this chart to determine the cheapest time to fly round-trip from Chicago to St. Louis. Price data was last updated on April 21, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Chicago to St. Louis flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to St. Louis by month

Plan your trip from Chicago to St. Louis by taking into account the cheapest months to travel. The average price of a one-way flight from Chicago to St. Louis is currently $62 while a round-trip flight costs $160. Price data was last updated on April 21, 2024.

Currently, September is the cheapest month in which you can book a flight from Chicago to St. Louis (average of $323). Flying from Chicago to St. Louis in July is currently the most expensive (average of $378). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$326

February

$331

March

$357

April

$337

May

$350

June

$373

July

$378

August

$336

September

$323

October

$323

November

$336

December

$326

Temperature and rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature and rainfall totals by month.

STL

Temperature

32 - 80.6 °F

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated April 25, 2024.
To help decide which airline to fly from Chicago to St. Louis, see what other customers have to say about Delta, United Airlines and American Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,180 reviews
Check prices

Crew

8.7

Entertainment

7.8

Food

7.4

Overall

8.2

Comfort

8.1

Boarding

8.3

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

Southwest
8.2
Very good
6,180 reviews
Southwest
8.2
Very good
6,180 reviews
Check prices

Crew

8.7

Entertainment

7.8

Food

7.4

Overall

8.2

Comfort

8.1

Boarding

8.3

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

Delta
8.1
Very good
10,975 reviews
Southwest
8.2
Very good
6,180 reviews
Check prices

Crew

8.7

Entertainment

7.8

Food

7.4

Overall

8.2

Comfort

8.1

Boarding

8.3

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

United Airlines
7.4
Good
11,255 reviews
Southwest
8.2
Very good
6,180 reviews
Check prices

Crew

8.7

Entertainment

7.8

Food

7.4

Overall

8.2

Comfort

8.1

Boarding

8.3

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

American Airlines
7.3
Good
14,898 reviews
Southwest
8.2
Very good
6,180 reviews
Check prices

Crew

8.7

Entertainment

7.8

Food

7.4

Overall

8.2

Comfort

8.1

Boarding

8.3

Reviews

1 / 10

I was traveling with a companion that utilizes a scooter to get around. We have flown together many times and used other airlines. Southwest by far is the most accommodating airline in the fleet your staff Makes the accessibility easy and convenient for for this type of travel. We would personally like to think the flight teams of our two flights for being very accommodating and helpful throughout our trip.

Related info for your journey

Find useful and relevant information for your journey from Chicago to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Chicago?

    If you book a flight to St. Louis from Chicago, you will be flying to 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 Chicago to Lambert-St Louis per day from 4 different airlines.

  • Can I find flights from Chicago to St. Louis for under $200 on Cheapflights?

    Yes, there are multiple flights from Chicago to St. Louis for under $200. The cheapest flight booked recently is on American Airlines for just $107, but on average you can expect to pay $145.

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

    Cheapflights has at least 20 direct flights from Chicago to St. Louis under $100. A good price for a nonstop flight from Chicago to St. Louis is less than $189.

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

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

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

    Nonstop flights are available for this route on the following days: Sunday, Monday, Tuesday, Friday, Saturday.

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

    Travelers can expect 25 flights from Chicago to St. Louis on average per day.
    Morning (6am - Noon) - 40% of flight departures
    Afternoon (Noon - 6pm) - 36% of flight departures
    Evening (6pm - Midnight) - 24% of flight departures

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

    Airlines like American Airlines, Southern / Mokulele, and Delta fly from Chicago to St. Louis in about 1h 20m. The time it takes to get you to your destination can typically vary by up to 13h. The distance from Chicago to St. Louis 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 Chicago to St. Louis round-trip?

    American Airlines, at $107, was found to be the cheapest airline from Chicago to St. Louis.Alternate airlines to your destination round-trip include Southern / Mokulele and Delta. These flights start at 60% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $46 on United Airlines. Other airlines that offer cheap prices include American Airlines from $49 and Spirit Airlines from $61 one-way.

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

    Southern / Mokulele, American Airlines and United Airlines are the most popular airlines when flying from Chicago to St. Louis.

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

    No one likes to see their flight delayed. When booking a flight from Chicago to St. Louis consider choosing Air Wisconsin (100%), Austrian Airlines (98%) or Emirates (93%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Chicago to St. Louis is $68. On average you can expect to pay $292. The most popular route, (Chicago O'Hare Intl - Lambert-St Louis), can usually be booked for $126.

  • What does ORD to STL mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Chicago O'Hare Intl Airport to Lambert-St Louis Airport flight would often be abbreviated as a ORD to STL flight. Ready for more IATA code knowledge? These are related airports for your current travel destination: Chicago Midway Airport (MDW), Chicago Greater Rockford Airport (RFD).

  • Can I find deals for flights from Chicago to St. Louis that include extra baggage allowance?

    The amount of baggage you can bring on your Chicago to St. Louis flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Chicago to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Chicago to St. Louis flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Chicago to St. Louis that include hotel bookings?

    Yes. In addition to deals on Chicago to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to St. Louis.

  • Can I find deals for business class flights from Chicago to St. Louis?

    Yes. Cheapflights offers flight deals from Chicago to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Chicago to St. Louis that allow pets onboard?

    Many airlines flying from Chicago to St. Louis offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Chicago to St. Louis?

    Yes, you can often find last-minute deals on Chicago to St. Louis flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Chicago to St. Louis flight deals updated?

    The Chicago to St. Louis flight deals you see on this page were last updated on 4/25.

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Alternative routes for Chicago to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.

O'Hare Intl to Kansas City flights
O'Hare Intl to St. Louis flights
Midway to Kansas City flights
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Midway to St. Louis flights
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Top 3 airlines flying from Chicago to St. Louis

Discover the top 3 airlines that operate flights from Chicago to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,073,952 searches. Data last updated April 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$114Average$281FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$130Average$298FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Southern / MokuleleCheapest$141Average$166FlexibilityNo cancel feeOn-timeN/A
Search Southern / Mokulele flights
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Search flights from Chicago to St. Louis by cabin class

Find flights from Chicago to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Chicago to St. Louis

Find hourly flight availability from Chicago to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 25, 2024.
2%of flight departuresEarly morningMidnight to 6 am
18%of flight departuresMorning6 am to noon
58%of flight departuresAfternoonNoon to 6 pm
22%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from Chicago to St. Louis

Explore weekly flight availability from Chicago to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 25, 2024.
Sunday49daily flights
Monday54daily flights
Tuesday46daily flights
Wednesday48daily flights
Thursday52daily flights
Friday54daily flights
Saturday36daily flights

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How does Cheapflights help users find flights from Chicago to St. Louis?

When you search for this flight from Chicago to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Chicago to St. Louis?

Cheapflights helps you find that perfect flight to St. Louis from Chicago by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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