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Cheap flights from Chicago (CHI) to St. Louis (STL) from $49

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 5/21. 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
maj 10 — maj 171
From?
To?
pt. 5/10
pt. 5/17
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 Maj 5, 2024.

Popular in

March

Cheapest in

September

Round-trip from

$322

One-way from

$79
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
Search Deals
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 40% 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 American Airlines flights from Chicago to St. Louis

Explore cheap flight options specifically provided by American 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 2,795,183 searches. Data last updated Maj 5, 2024.
Consider these cheap American Airlines flights we've found departing from Chicago to St. Louis. It's recommended that users confirm their flight details before booking.
śr. 6/124:05 pmORD - STL
Nonstop1h 13mAmerican Airlines
wt. 7/236:04 amSTL - ORD
Nonstop1h 21mAmerican Airlines
Deal found 5/4$97
czw. 9/264:00 pmORD - STL
Nonstop1h 14mAmerican Airlines
sob. 9/286:21 pmSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 5/4$117
sob. 5/257:59 amORD - STL
Nonstop1h 20mAmerican Airlines
ndz. 5/269:52 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Deal found 5/4$167
sob. 5/256:27 pmORD - STL
1 stop4h 55mAmerican Airlines
ndz. 5/265:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 5/4$175
śr. 6/124:05 pmORD - STL
Nonstop1h 13mAmerican Airlines
wt. 7/235:17 amSTL - ORD
1 stop4h 58mAmerican Airlines
Deal found 5/4$184
pt. 5/318:24 pmORD - STL
Nonstop1h 23mAmerican Airlines
ndz. 6/25:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 5/4$198
sob. 6/19:50 amORD - STL
Nonstop1h 20mAmerican Airlines
sob. 6/83:27 pmSTL - ORD
1 stop6h 10mAmerican Airlines
Deal found 5/4$205
czw. 5/303:04 pmORD - STL
Nonstop1h 13mAmerican Airlines
czw. 6/63:27 pmSTL - ORD
1 stop6h 10mAmerican Airlines
Deal found 5/4$206
śr. 5/229:50 amORD - STL
Nonstop1h 20mAmerican Airlines
śr. 5/295:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 5/4$219

Cheap Frontier flights from Chicago to St. Louis

Explore cheap flight options specifically provided by Frontier 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 2,795,183 searches. Data last updated Maj 5, 2024.
Have a look at some of the cheapest available Frontier flights departing from Chicago and landing in St. Louis. Check back soon if you're not seeing flights that suit your needs.
ndz. 5/198:55 pmMDW - STL
1 stop13h 18mFrontier
śr. 5/228:47 amSTL - MDW
1 stop5h 22mFrontier
Deal found 5/5$108
śr. 5/158:25 amORD - STL
1 stop8h 30mFrontier
sob. 5/187:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/4$124
wt. 5/145:30 amMDW - STL
1 stop10h 20mFrontier
czw. 5/167:23 pmSTL - MDW
1 stop10h 27mFrontier
Deal found 5/3$149
wt. 5/145:51 pmORD - STL
1 stop23h 04mFrontier
czw. 5/167:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/3$150
pon. 5/1310:59 pmMDW - STL
1 stop23h 00mFrontier
pt. 5/1710:21 pmSTL - MDW
1 stop13h 33mFrontier
Deal found 5/4$153
ndz. 5/197:59 pmORD - STL
1 stop14h 14mFrontier
śr. 5/227:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/5$157
pon. 5/136:27 pmORD - STL
1 stop21h 23mFrontier
pt. 5/176:40 pmSTL - ORD
1 stop10h 30mFrontier
Deal found 5/4$163
pon. 5/209:10 pmMDW - STL
1 stop13h 03mFrontier
czw. 5/237:23 pmSTL - MDW
1 stop10h 27mFrontier
Deal found 5/3$167
czw. 5/168:55 pmMDW - STL
1 stop13h 18mFrontier
pon. 5/207:23 pmSTL - MDW
1 stop10h 27mFrontier
Deal found 5/4$234

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

Find cheap flight options from Chicago to St. Louis specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,795,183 searches. Prices were last updated on Maj 5, 2024.
The lowest fares we've come across on flights traveling from Chicago to St. Louis in May and June 2024. For more flight deals, be sure to check back very soon.
śr. 6/124:05 pmORD - STL
Nonstop1h 13mAmerican Airlines
wt. 7/236:04 amSTL - ORD
Nonstop1h 21mAmerican Airlines
Deal found 5/4$97
śr. 5/158:25 amORD - STL
1 stop8h 30mFrontier
sob. 5/187:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/4$124
pon. 5/207:59 pmORD - STL
1 stop14h 14mMultiple Airlines
czw. 5/234:45 pmSTL - ORD
1 stop3h 52mMultiple Airlines
Deal found 5/3$139
wt. 5/145:30 amMDW - STL
1 stop10h 20mFrontier
czw. 5/167:23 pmSTL - MDW
1 stop10h 27mFrontier
Deal found 5/3$149
ndz. 5/197:59 pmORD - STL
1 stop14h 14mMultiple Airlines
pt. 5/244:45 pmSTL - ORD
1 stop3h 52mMultiple Airlines
Deal found 5/4$149
wt. 5/145:51 pmORD - STL
1 stop23h 04mFrontier
czw. 5/167:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/3$150
sob. 5/187:05 amORD - STL
1 stop5h 00mMultiple Airlines
sob. 5/187:23 pmSTL - ORD
1 stop9h 37mMultiple Airlines
Deal found 5/4$151
pon. 5/1310:59 pmMDW - STL
1 stop23h 00mFrontier
pt. 5/1710:21 pmSTL - MDW
1 stop13h 33mFrontier
Deal found 5/4$153
sob. 5/255:00 pmMDW - STL
1 stop4h 52mDelta
ndz. 5/266:11 amSTL - MDW
1 stop4h 51mDelta
Deal found 5/4$156

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 2,795,183 searches. Data last updated Maj 5, 2024.
The lowest fares we've come across on flights traveling from Chicago to St. Louis in May and June 2024. For more flight deals, be sure to check back very soon.
śr. 6/124:05 pmORD - STL
Nonstop1h 13mAmerican Airlines
wt. 7/236:04 amSTL - ORD
Nonstop1h 21mAmerican Airlines
Deal found 5/4$97
czw. 9/264:00 pmORD - STL
Nonstop1h 14mAmerican Airlines
sob. 9/286:21 pmSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 5/4$117
śr. 5/158:25 amORD - STL
1 stop8h 30mFrontier
sob. 5/187:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/4$124
pon. 5/207:59 pmORD - STL
1 stop14h 14mMultiple Airlines
czw. 5/234:45 pmSTL - ORD
1 stop3h 52mMultiple Airlines
Deal found 5/3$139
wt. 5/145:30 amMDW - STL
1 stop10h 20mFrontier
czw. 5/167:23 pmSTL - MDW
1 stop10h 27mFrontier
Deal found 5/3$149
ndz. 5/197:59 pmORD - STL
1 stop14h 14mMultiple Airlines
pt. 5/244:45 pmSTL - ORD
1 stop3h 52mMultiple Airlines
Deal found 5/4$149
wt. 5/145:51 pmORD - STL
1 stop23h 04mFrontier
czw. 5/167:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/3$150
sob. 5/187:05 amORD - STL
1 stop5h 00mMultiple Airlines
sob. 5/187:23 pmSTL - ORD
1 stop9h 37mMultiple Airlines
Deal found 5/4$151
pon. 5/1310:59 pmMDW - STL
1 stop23h 00mFrontier
pt. 5/1710:21 pmSTL - MDW
1 stop13h 33mFrontier
Deal found 5/4$153

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 2,795,183 searches. Data last updated Maj 5, 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.
śr. 6/124:05 pmORD - STL
Nonstop1h 13mAmerican Airlines
wt. 7/236:04 amSTL - ORD
Nonstop1h 21mAmerican Airlines
Deal found 5/4$97
czw. 9/264:00 pmORD - STL
Nonstop1h 14mAmerican Airlines
sob. 9/286:21 pmSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 5/4$117
sob. 5/257:59 amORD - STL
Nonstop1h 20mAmerican Airlines
ndz. 5/269:52 amSTL - ORD
Nonstop1h 16mAmerican Airlines
Deal found 5/4$167
czw. 5/303:04 pmORD - STL
Nonstop1h 13mAmerican Airlines
czw. 6/66:00 amSTL - ORD
Nonstop1h 22mAmerican Airlines
Deal found 5/4$187
sob. 6/112:52 pmORD - STL
Nonstop1h 24mUnited Airlines
sob. 6/86:30 amSTL - ORD
Nonstop1h 34mUnited Airlines
Deal found 5/4$197
pt. 5/318:24 pmORD - STL
Nonstop1h 23mAmerican Airlines
ndz. 6/25:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 5/4$198
wt. 6/112:20 pmORD - STL
Nonstop1h 21mUnited Airlines
śr. 7/2410:19 amSTL - ORD
Nonstop1h 29mUnited Airlines
Deal found 5/4$217
śr. 5/229:50 amORD - STL
Nonstop1h 20mAmerican Airlines
śr. 5/295:08 pmSTL - ORD
Nonstop1h 17mAmerican Airlines
Deal found 5/4$219
pon. 10/72:30 pmORD - STL
Nonstop1h 19mUnited Airlines
śr. 10/911:09 amSTL - ORD
Nonstop1h 21mUnited Airlines
Deal found 5/4$227

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 2,795,183 searches. Data last updated Maj 5, 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.
śr. 5/158:25 amORD - STL
1 stop8h 30mFrontier
sob. 5/187:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/4$124
wt. 5/145:30 amMDW - STL
1 stop10h 20mFrontier
czw. 5/167:23 pmSTL - MDW
1 stop10h 27mFrontier
Deal found 5/3$149
ndz. 5/197:59 pmORD - STL
1 stop14h 14mMultiple Airlines
pt. 5/244:45 pmSTL - ORD
1 stop3h 52mMultiple Airlines
Deal found 5/4$149
wt. 5/145:51 pmORD - STL
1 stop23h 04mFrontier
czw. 5/167:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/3$150
sob. 5/187:05 amORD - STL
1 stop5h 00mMultiple Airlines
sob. 5/187:23 pmSTL - ORD
1 stop9h 37mMultiple Airlines
Deal found 5/4$151
pon. 5/1310:59 pmMDW - STL
1 stop23h 00mFrontier
pt. 5/1710:21 pmSTL - MDW
1 stop13h 33mFrontier
Deal found 5/4$153
ndz. 5/197:59 pmORD - STL
1 stop14h 14mFrontier
śr. 5/227:23 pmSTL - ORD
1 stop9h 37mFrontier
Deal found 5/5$157
pon. 5/136:27 pmORD - STL
1 stop21h 23mFrontier
pt. 5/176:40 pmSTL - ORD
1 stop10h 30mFrontier
Deal found 5/4$163
czw. 5/95:15 pmORD - STL
1 stop3h 05mMultiple Airlines
sob. 5/114:37 pmSTL - ORD
1 stop7h 06mMultiple Airlines
Deal found 5/3$164

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 2,795,183 searches. Data last updated Maj 5, 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.
wt. 5/216:00 amMDW - STL
1 stop7h 09mFrontier
Deal found 5/3$49
śr. 7/312:55 pmORD - STL
Nonstop1h 23mUnited Airlines
Deal found 5/4$49
pon. 5/209:10 pmMDW - STL
1 stop13h 03mFrontier
Deal found 5/3$55
sob. 5/187:59 pmORD - STL
1 stop14h 14mFrontier
Deal found 5/4$55
wt. 5/146:10 amORD - STL
1 stop7h 27mSpirit Airlines
Deal found 5/4$59
śr. 5/226:45 pmORD - STL
1 stop27h 21mFrontier
Deal found 5/3$60
ndz. 5/198:55 pmMDW - STL
1 stop13h 18mFrontier
Deal found 5/3$65
ndz. 5/197:59 pmORD - STL
1 stop14h 14mFrontier
Deal found 5/3$65
wt. 6/410:52 pmORD - STL
1 stop14h 13mSpirit Airlines
Deal found 5/4$67

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 2,795,183 searches. Data last updated Maj 5, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$97 - $216

Route

Depart

Return

Price

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

śr. 6/12

Nonstop1h 13m

Lambert-St Louis

wt. 7/23

Nonstop1h 21m

$97

Chicago MidwayLambert-St Louis

MDW - STL

MDWSTL

Chicago Midway

ndz. 5/19

1 stop13h 18m

Lambert-St Louis

śr. 5/22

1 stop5h 22m

$108

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

czw. 9/26

Nonstop1h 14m

Lambert-St Louis

sob. 9/28

Nonstop1h 19m

$117

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

pon. 5/20

1 stop14h 14m

Lambert-St Louis

czw. 5/23

1 stop3h 52m

$139

Chicago MidwayLambert-St Louis

MDW - STL

MDWSTL

Chicago Midway

sob. 5/25

1 stop4h 52m

Lambert-St Louis

ndz. 5/26

1 stop4h 51m

$156

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

sob. 5/25

1 stop5h 00m

Lambert-St Louis

ndz. 5/26

1 stop3h 52m

$168

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

czw. 6/13

1 stop18h 06m

Lambert-St Louis

pt. 7/26

1 stop17h 35m

$192

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

sob. 6/1

Nonstop1h 24m

Lambert-St Louis

sob. 6/8

Nonstop1h 34m

$197

Chicago O'Hare IntlLambert-St Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

pon. 5/20

1 stop14h 59m

Lambert-St Louis

czw. 5/23

2 stops21h 05m

$216

Flights are sorted by cheapest first

Deals found on 5/4

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 28, 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. Monday mornings 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 $58 while a round-trip flight costs $154. Price data was last updated on April 28, 2024.

Currently, September is the cheapest month in which you can book a flight from Chicago to St. Louis (average of $322). Flying from Chicago to St. Louis in July is currently the most expensive (average of $377). 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

$345

June

$371

July

$377

August

$336

September

$322

October

$324

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 Maj 5, 2024.
To help decide which airline to fly from Chicago to St. Louis, see what other customers have to say about American Airlines, Frontier and Delta. 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
6,092 reviews
Check prices

Food

7.3

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Entertainment

7.8

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Southwest
8.2
Very good
6,092 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Food

7.3

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Entertainment

7.8

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

Delta
8.1
Very good
10,826 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Food

7.3

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Entertainment

7.8

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

United Airlines
7.4
Good
11,118 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Food

7.3

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Entertainment

7.8

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

American Airlines
7.3
Good
14,713 reviews
Southwest
8.2
Very good
6,092 reviews
Check prices

Food

7.3

Boarding

8.3

Crew

8.7

Comfort

8.1

Overall

8.2

Entertainment

7.8

Reviews

1 / 10

The seats are too narrow and uncomfortable. I do appreciate that there was room for my knees. I hate the boarding circus.

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 $100 on Cheapflights?

    Yes, there are multiple flights from Chicago to St. Louis for under $100. The cheapest flight booked recently is on American Airlines for just $97, but on average you can expect to pay $153.

  • 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 $236.

  • 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, Friday.

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

    Travelers can expect 11 flights from Chicago to St. Louis on average per day.
    Morning (6am - Noon) - 55% of flight departures
    Afternoon (Noon - 6pm) - 45% of flight departures

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

    Airlines like American Airlines, Frontier, and Delta fly from Chicago to St. Louis in about 1h 13m. The time it takes to get you to your destination can typically vary by up to 12h 05m. 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 $97, was found to be the cheapest airline from Chicago to St. Louis.Alternate airlines to your destination round-trip include Frontier and Delta. These flights start at 64% 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 $49 on Frontier. Other airlines that offer cheap prices include United Airlines from $49 and Spirit Airlines from $59 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%), Republic Airways (97%) or Austrian Airlines (96%) 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 $69. On average you can expect to pay $288. The most popular route, (Chicago O'Hare Intl - Lambert-St Louis), can usually be booked for $137.

  • 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 5/4.

See more FAQs

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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
O'Hare Intl to Springfield flights
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 2,795,183 searches. Data last updated Maj 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$105Average$289FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$130Average$299FlexibilityNo 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 Maj 5, 2024.
2%of flight departuresEarly morningMidnight to 6 am
23%of flight departuresMorning6 am to noon
47%of flight departuresAfternoonNoon to 6 pm
28%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 Maj 5, 2024.
Sunday49daily flights
Monday54daily flights
Tuesday46daily flights
Wednesday48daily flights
Thursday52daily flights
Friday54daily flights
Saturday36daily flights

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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.

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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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